# Basic Air Data

> DIY Air Data Instruments


## Posts

- [IRC Meeting. 3rd December 15:00 UTC](https://basicairdata.eu/blog/2016/11/17/irc-meeting-17th-november-1500-utc/): Countdown to fifth online IRC meeting. No registration needed. No software needed. Simply follow this link. If you prefer to use a client check out how to access IRC with your client. We look forward to an opportunity to speak with you personally!  
- [Added Editor Calendar](https://basicairdata.eu/blog/2016/11/05/added-editor-calendar/): For those of you interested in publishing, there is a tasty news.  We’ve incorporated Edit Flow. The editing process is now totally streamlined. So, what are you waiting for? Do you desire to comment, modify, complete articles? Do you feel you can (and probably you can 🙂 write a better English? Enter in contact with us today! https://howtostartablogonline.net/why-blog/
- [basicairdata.blogspot.it closed](https://basicairdata.eu/blog/2016/10/29/basicairdata-blogspot-it-closed/): The former Basic Air Data blog, basicairdata.blogspot.it, is closed to traffic. That was a necessary step to attain a good web presence and contain the resources necessary to keep the wheels turning. The use of WordPress CMS streamlined the team tasks and contributed to a better user experience. Finally IT guys entered into the game 🙂 We salute our former Blog and thank you all for your collaboration!
- [IRC Meeting. 5th November 15:00 UTC](https://basicairdata.eu/blog/2016/10/21/irc-meeting-6th-november-1500-utc/): Fourth online IRC meeting. No registration needed. No software needed. Simply follow this link. If you prefer to use a client check out how to access IRC with your client. We look forward to an opportunity to speak with you personally!
- [Unpacking of SkyEye](https://basicairdata.eu/blog/2016/10/06/unpacking-of-skyeye/): The flying platform selected for the upcoming ADC fly test is the SkyEye; it will be a nice occasion to take some picture. It’s a real popular platform and its assembly process is adequate even for novices. To be ready for flight, ADC apart, you need a battery pack, starting from 3S 2200mAh, and a receiver for your TX. The available payload volume seems, check the gallery pictures, more than sufficient. Wingspan is 2 meter, the fly is slow and the demountable wing is easy to transport. The plan is to carry out the fly test with the stock motor, […]
- [New release of GPSLogger](https://basicairdata.eu/blog/2016/09/30/new-release-of-gpslogger/): You find the description of the app here. The update of GPSLogger is out! Download the app from google play store and start to record your position and path.
- [IRC Meeting. 1st Ocober 15:00 UTC](https://basicairdata.eu/blog/2016/09/29/irc-meeting-1st-ocober-1500-utc/): Third online IRC meeting. No registration needed. No software needed. Simply follow this link. Check out here how to access IRC with your client. We look forward to an opportunity to speak with you personally!
- [IRC Meeting, 27 August 15:00 UTC](https://basicairdata.eu/blog/2016/08/23/irc-meeting-27-august-1500-utc/): IRC channel #BasicAirData on Freenode, 27 August 15:00 UTC If you want to enter in contact with Basic Air Data members then check out this page. We look forward to hearing from you!
- [Online Meeting](https://basicairdata.eu/blog/2016/07/04/online-meeting/): Don’t blink!You’ll miss it! We’re experimenting a new way to communicate with you. We’ve scheduled an online meeting on IRC Chat. This meeting is the ideal occasion to discuss about the material published on the website, making and programming. Feature proposal and bug report will be also possible. No registration needed. More information and schedule  
- [Easter 2016 BAD member meeting](https://basicairdata.eu/blog/2016/05/10/easter-2016-bad-member-meeting/): Some of the BAD members met in Italy, during the Easter holidays. Beer was consumed, naturally (by adult members only) and fun was had!
- [New Air Data Computer "Amaranth" under test](https://basicairdata.eu/blog/2016/05/09/new-air-data-computer-amaranth-under-test/): We’re testing the new “Amaranth” ADC. This new release requires less resources to be assembled. It took about 18 minutes to prepare 3rd party parts and assembly everything. We will continue with electronics assembly asap! Everything is running smooth. Pictures here [metaslider id=1414]
- [Regained normal operation mode](https://basicairdata.eu/blog/2016/03/10/regained-normal-operation/): After some extraordinary maintenance we are back to normal operations. See this featured article that perform a practical example for our new Basic Air Data library for Teensy/Arduino micro-controllers. Library Use-Case: SD-Enabled Temperature Logger
- [Site Migration Almost Complete](https://basicairdata.eu/blog/2016/03/04/site-migration-almost-complete/): The site migration is almost complete, at last the contents are migrated. Any feedback on malfunctions is welcome! use info @ basicairdata.eu  
- [Site under test](https://basicairdata.eu/blog/2016/02/18/site-under-test/): This site is under test. Refer to Official BasicAirData site https://basicairdata.eu/
- [Build GPSLogger within a Docker container](https://basicairdata.eu/blog/2025/01/11/build-gpslogger-within-a-docker-container/): A short tutorial on building GPSLogger apk within a Docker.
- [BasicAirData partecipation to Hacktoberfest](https://basicairdata.eu/blog/2024/10/02/basicairdata-partecipation-to-hacktoberfest/): https://hacktoberfest.com Basic Air Data participates in Hacktoberfest 2024 with two repositories: https://shorturl.at/d5eUE https://shorturl.at/xQn0f Let’s code!
- [Exploring possibilities](https://basicairdata.eu/blog/2024/02/15/exploring-possibilities/): We’ve exceeded 80000 regular users of the GPS Logger app, which is fantastic even for us :-). We’ve collected a list of features that users have asked us for in the last few years, and we’ve also collected a few personal features that we’d love to add to the app. To achieve such a result, we need to check a new strategy. We are exploring the possibility of releasing a Pro version of GPS Logger and/or starting a Kickstarter to finance the implementation of new software features.So what?Today is, even more, the day to contribute to Basic Air Data! 🙂See […]
- [Here we are again!](https://basicairdata.eu/blog/2022/01/27/here-we-are-again/): Due to the unexpected user feedback on GPS Logger app, we decided to start a translation program. That’s all folks, if you know anyone interested please forward him our message.
- [Miss! Translation of GPS Logger in the Japanese language](https://basicairdata.eu/blog/2021/06/06/miss-translation-of-gps-logger-in-the-japanese-language/): Here we are again. With more than 60k active installations we are scheduling a new fine release of GPS Logger. We have an issue here. Our Japanese translation project is incomplete! BASIC aIR DATA TEAM Start to contribute today to Japanese translation!
- [Clinometer App is Out](https://basicairdata.eu/blog/2021/02/22/clinometer-app-is-out/): As many people request (!) to measure the angle between their mobile device and the gravity vector, we released a Clinometer android app. As usual, the app is freely available on the android play store or directly on Github. The localization project started on the Crodwin platform at this link. The whole source code is available within Github Basic Air Data repository. Once again, from the depth of the heart, a big thank you to all our contributors!
- [Post here your question!](https://basicairdata.eu/blog/2021/01/15/post-here-your-question/): Do you need to process your telemetry data for your hobby application? Post here your question! Plane, manufacturing machine, car, train, all applications are welcome. Comment here below!
- [Another project uses Basic Air Data Library for Android](https://basicairdata.eu/blog/2020/11/22/another-project-uses-basic-air-data-library-for-android/): We’ve discovered this cute project about air quality. It happened that we’ve informed that their project uses our Bluetooth helper library. The library is the same used to interface with the Air Data Computer. It maintains its open and free nature. We are online on Bintray, just add to your code compile 'eu.basicairdata:bluetoothhelper:1.0.5' So, remember to check out the SensAir project on Github!
- [Seven languages and counting!](https://basicairdata.eu/blog/2020/10/26/seven-languages-and-counting/): Tears and sweat. Free contributors, heroically, completed 7 localizations! And are working on 19 languages! Check out the online translation project on Crowdin https://bit.ly/31FBA5F.
- [Post your best GPS Logger route!](https://basicairdata.eu/blog/2020/07/02/post-your-best-gps-logger-route/): The user base of GPS Logger exceeded 100k users, we owe a big thank you to all our supporters! Do you want to share with other people the best route you have logged with GPS Logger? Take this occasion and leave a comment! Always remember to enjoy your GPS Logger experience.
- [8th of March 2020](https://basicairdata.eu/blog/2020/03/09/8th-of-march-2020/): As you know, Coronavirus, COVID-19, affected a lot of people. Even our closest collaborators have been touched to some degree. Fortunately, it seems that no one was directly infected. We empathize with all the people involved, and we thank all the people that are working to fight the epidemic. https://twitter.com/neiltyson/status/1236071277955252226
- [Iniziativa locale di beneficenza - Torino - Italia -](https://basicairdata.eu/blog/2020/02/18/iniziativa-locale-di-beneficenza-torino-italia/): Uno dei nostri super utent GPS Logger ci ha segnalato una iniziativa molto concreta in favore dei pazienti pediatrici. Scusate se vi spammo con questa roba, ma mi sono iscritto alla mezza di Torino (però io corro solo la 10Km…) insieme a CasaOz, un’associazione che si occupa di assistenza alle famiglie che devono affrontare ricoveri pediatrici lungodegenti. Se vi va di contribuire con una piccola offerta, o anche solo condividere il link, è per una buona causa 😉 https://bit.ly/38PVPPm Carlo Alberto Ovviamente ci aspettiamo di ricevere il log file 🙂
- [Redundant RC Servo](https://basicairdata.eu/blog/2020/01/21/redundant-rc-servo/): Addressing the reliability issue, we’ve decided to look into the question or redundant RC servos. Check out and comment here!
- [Using Air Speed Sensor with Jeti Rx](https://basicairdata.eu/blog/2019/12/19/using-air-speed-sensor-with-jeti-rx/): The integration of airspeed sensors is often a moderately complex operation. Check out here how to feed your Jeti RX with airspeed data. Of course, it is a really good solution to use your own made 8 mm pitot. How do you use airspeed sensors?
- [A Pearl: Miniature airspeed sensor for RC plane and UAVs.](https://basicairdata.eu/blog/2019/12/18/a-pearl-miniature-airspeed-sensor-for-rc-plane-and-uavs/): It’s not common to find out a site so detailed. Lovely UAV ongoing project! Check out Rapid Control Prototyping website!
- [Wind Tunnel Tests of a Pitot-Static Tube Array to Estimate Wind Velocity](https://basicairdata.eu/blog/2019/12/18/wind-tunnel-tests-of-a-pitot-static-tube-array-to-estimate-wind-velocity/): When speaking about meteorology and performance flight Wind estimation is a hot topic. We’ve been informed of the wind tunnel test of a device composed of six single Pitot-Static tubes. Well, that looks terrific! If anyone is testing one similar device please share it with us! You find the complete PDF by the authors in this link
- [Cost-Effective Vehicle Monitoring System for Detecting Unacceptable Driver Behaviors on Road](https://basicairdata.eu/blog/2019/12/13/cost-effective-vehicle-monitoring-system-for-detecting-unacceptable-driver-behaviors-on-road/): We’ve been informed of this paper here that describes a research-oriented use of Basic Air Data GPS Logger application. Of course, we are not able to follow the authors 🙂 However many of you may be interested! Find your complete pdf article in this link.
- [Testing out my First Mate](https://basicairdata.eu/blog/2019/12/13/testing-out-my-first-mate/): We’ve been used to see very different applications of our GPS Logger. This time “The Jeff” used GPS Logger to check the performance of his boat! Read the whole story on this forum
- [Check out this fantastic amateur telescope project!](https://basicairdata.eu/blog/2019/12/08/check-out-this-fantastic-amateur-telescope-project/): Not precisely focused on main Basic air data activites, but yes, we actively support this outstanding 800 mm telescope project! They are building the whole assembly from scratch, every aspect is covered, from engineering, including dynamic behavior study, to machining. The project includes the use of composite materials. Find out more on Instagram!
- [Frameworks & Co](https://basicairdata.eu/blog/2019/10/24/frameworks-co/): As a project, we’re evaluating different frameworks to implement two families of tasks. Automatic task execution should be usable by Basic Air Data website users. In genera,l we should be able to handle Post and pre-processing of air data Post and pre-processing of GPS Logger data We can use a dedicated server, so we are open to a web app oriented implementation. The framework should be able to handle data by CSV files and manipulate matrixes. The possibility to run across different operating systems, mobile platforms, and a good graphics output is a plus. We are looking for free to […]
- [SMART FAULT-TOLERANT AIR-DATA SENSOR FOR AIRCRAFT FLOW ANGLES MEASUREMENT](https://basicairdata.eu/blog/2019/10/10/smart-fault-tolerant-air-data-sensor-for-aircraft-flow-angles-measurement/): Air data probe from Italy. Check out the article pdf here. The authors show off a complete miniature air data probe. Electronic airspeed and angle of attack and sideslip probe.
- [Mid-range communication with Asgard ADC in RC Applications](https://basicairdata.eu/blog/2019/10/07/mid-range-communication-with-asgard-adc-in-rc-applications/): Asgard ADC first requirement was for a stand-alone unit. Speaking about Radio-Control aircraft, that requirement was thought to avoid the electrical connection between the Asgard and the primary RC radio electronics. Without a galvanic connection between those units, the primary RC electronics is tolerant of severe Asgard electrical issues. I have to say that to date, we have no report of such severe problems with Asgard ADC. Downlink management is left to the user. Some team members used Zigbee modules with USB dongles. It’s time to add a standard solution for the mid-range data link So, what about implementing a […]
- [What's going on in September?](https://basicairdata.eu/blog/2019/09/27/whats-going-on-in-september/): In summary, The deadline for the Air Data Computer Batch experiment is approaching fast! Don’t forget to leave your feedback How-to: Using GPS Logger Android App with a Bluetooth GPS receiver Contact us!
- [DIY batch for ADC?](https://basicairdata.eu/blog/2019/08/27/diy-batch-for-adc/): We are reordering ideas about making a small batch of Asgard ADCs for Do-It-Yourself users. You find all the information on the dedicated page here.
- [Don't be shy! participate in a Mechatronic open project!](https://basicairdata.eu/blog/2019/07/10/dont-be-shy-participate-in-a-mechatronic-open-project/): We’ve started to lay down some idea about the new air data computer to measure: Airspeed/Flowrate TAS, IAS [m/s] Outside air temperature [°C] The angle of attack [deg] The angle of sideslip [deg] You find some media in this introductory article. Contact us to participate.
- [Drone Video @Bali](https://basicairdata.eu/blog/2019/06/21/drone-video-bali/): We know for sure, a bunch of Basic Air Data users is into aerial photography. We’ve got the luck to see a preview of a video work regarding Bali, Indonesia. Well, that is not to miss! You can appreciate the pretty smooth shoots obtained with a DJI Mavic air and a GoPro. Remember to subscribe to the channel to see coming videos!
- [Radio Controlled F104 with ADC](https://basicairdata.eu/blog/2019/06/18/radio-controlled-f104-with-adc/): We will be reporting about the proceedings with a project involving an F104 RC plane. Basic Air Data will be supporting an RC modeler with the Asgard ADC. You find the F104 follow up article here.
- [Air Data Bridge Patch](https://basicairdata.eu/blog/2019/06/17/air-data-bridge-patch/): After the inspection of different reported issues, the developer comes up with a patch release. Export data function is now again fully functional. The app is terrific, as usual!
- [Send your log file for our review!](https://basicairdata.eu/blog/2019/06/10/send-your-log-file-for-our-review/): If you use Asgard Air Data Computer and you would like a peer review of your data you can send you log file to log @ basicairdata.eu. Deadline -> From June 1st to October 31th, 2019 Please mail to us your questions about the log file or about any Asgard related topic. We are happy to help!
- [GPS Aided State Estimation](https://basicairdata.eu/blog/2019/06/06/gps-aided-state-estimation/): Some time ago we introduced a simple GPS aided estimator. From time to time the topic surface again. Any public discussion is welcome.
- [Air Data Bridge](https://basicairdata.eu/blog/2019/05/16/air-data-bridge/): Some time ago we released Air Data Bridge Android App to manage the DIY Air Data Computer Asgard and handle data logs. As you know, this app will only work if coupled with an Asgard ADC. Well, we are quite surprised to know, that about 25 app installations are regularly used out there :-). If you are a user in need or you feel the need to get in touch or tell your story, do not hesitate to contact us!
- [Atmospheric and Aeronautic Lidar](https://basicairdata.eu/blog/2019/04/12/atmospheric-and-aeronautic-lidar/): Aeronautic Lidars share the same working principles of atmospheric lidars. There is this article ” 1.5µm Lidar anemometer for True Air Speed, Angle Of Sideslip and Angle Of Attack measurements onboard Piaggio P180 aircraft ” available online that offers a good level of detail on the topic. You find some picture and technical information, worth a read through. Of course, it will be fascinating to play around with a DIY version of such hardware 🙂 Regards, Erik
- [Updated Embedded System notes](https://basicairdata.eu/blog/2019/03/06/updated-embedded-system-notes/): We’ve updated the tech notes for firmware developers. Always happy to hear from you. 🙂
- [Contribute](https://basicairdata.eu/blog/2019/02/15/contribute/): About ten years ago we started Basic Air Data project activities. We are open; now you can impact on BAD development. No matter if you are a coder, a non-coder, a writer, or a graphic. Have a look at this brand new forum and to our GitHub repos. Share with us!
- [Using the Air Data Computer config file](https://basicairdata.eu/blog/2019/02/12/using-the-air-data-computer-config-file/): The air data computer Asgard comes with an internal server. In this article, we describe how to compensate for a sensor offset using a config file on the sd card.
- [BasicAirData GPS Logger – Manual Setup of the EGM Altitude Correction](https://basicairdata.eu/blog/2019/01/29/basicairdata-gps-logger-manual-setup-of-the-egm-altitude-correction/): This article describes the EGM altitude correction functionalities of GPS Logger from the user point of view. Don’t miss it!
- [Experimental Arduino RC Plane Build Log](https://basicairdata.eu/blog/2019/01/25/experimental-arduino-rc-plane-build-log/): We got hooked on this forum. The author is building his autopilot, software, and airframe. It is a build log, so the reader is exposed to many issues and fixes. A Teensy 3.6 board is plugged into the flight controller (the same board we used on Asgard ADC). The project is not anymore at the initial stage. From the forum What I will be covering: – Models for 3D printed plane and ground station pieces – Custom software files for both ground and air microcontrollers – Circuit schematics and PCB layouts – Equipment required/used – Pictures/videos/general updates Power_Broker, Experimental Arduino […]
- [Short Multi-holes probe article](https://basicairdata.eu/blog/2019/01/11/short-multi-holes-probe-article/): Right now we’ve published a short introductory article about multi-holes probes. It lay down the basi of MHP, alfa-beta probes. The piece depicts the behavior of an ideal angle of attack probe based on a cylindrical geometry. Interested? Consider participating in our brainstorm about a new air data system that can drive an MHP.
- [Share your wandering and best places with GPS Logger](https://basicairdata.eu/blog/2018/12/17/share-your-wandering-and-best-places-with-gps-logger/): In many parts of the world it’s time of holidays and relax. Take your time to share your wanderings and best places with free GPS Logger. Share today on our forum! https://basicairdata.eu/forums/ Pictures will be pinned on the forum. We are looking forward to hearing from you!
- [Experimental thesis on air data system for parameter identification. DIY Alfa beta vanes, basicairdata boom](https://basicairdata.eu/blog/2018/12/07/experimental-thesis-on-air-data-system-for-parameter-identification-diy-alfa-beta-vanes-basicairdata-boom/): Pictures, plots, and DIY Basic Air Data vanes. Really interesting if you are working on your DIY air data system. Title of the work “LOW COST FRAMEWORK FOR PARAMETER IDENTIFICATION OF UNMANNED AERIAL VEHICLES By Ahmad Adel Ahmad Metwalli Khattab” You can freely download the thesis pdf in this link.
- [Ion drive MIT 5 m plane, first flight](https://basicairdata.eu/blog/2018/11/27/ion-drive-mit-5-m-plane-first-flight/): Work in progress!
- [Major release of Wordpress is scheduled](https://basicairdata.eu/blog/2018/11/22/major-release-of-wordpress-5-0-is-scheduled/): WordPress, an excellent CMS, empowers our project. We love it!. According to this source here, there is an upcoming major release on November 29th. The new release will upgrade to Gutenberg editor. We will upgrade to the new version as soon as technically possible. Issues are not foreseen for the upgrade, in case send your feedback. The BasicAirData team takes the occasion to greet and thank our collaborators and WordPress folks.
- [Article: DESIGN AND DEVELOPMENT OF A WIRELESS PITOT TUBE FOR UTILIZATION IN FLIGHT TEST](https://basicairdata.eu/blog/2018/11/17/article-design-and-development-of-a-wireless-pitot-tube-for-utilization-in-flight-test/): We’ve strumbled on this fascinating article about a wireless air data boom development. You can download the whole article pdf from the abc.org site in this link.
- [Flying with an Air Data System](https://basicairdata.eu/blog/2018/11/12/flying-with-an-air-data-system/): We’re publishing here a link to a youtube video. No involvement with the cited company, however, the video shows pretty clearly what is intended for instrumented flight. Let’s say the video is motivational. Indeed we need to complete and polish our DIY air data system :-). Check out this free, DIY oriented,  basic air data projects : Make your DIY air data system! ADC, test flight video. DIY Projects.
- [Student Developed Aircraft System Provides Key Data](https://basicairdata.eu/blog/2018/10/07/student-developed-aircraft-system-provides-key-data/): That is air data! Check out this air data setup from the NASA website. Impressive amount of pressure tap points.
- [Boomerang Flight Dynamics](https://basicairdata.eu/blog/2018/09/05/boomerang-flight-dynamics/): You find here an (amazing!) detailed paper by John Vassberg “Boomerang Flight Dynamics” . That’s gold! Anyway, we’ve downloaded and we are trying Boomlab. Finite element approach here.
- [Build your Air Data Computer!](https://basicairdata.eu/blog/2018/08/01/build-your-air-data-computer/): A few months ago we’ve tested the latest release of our air data computer, the Asgard. We’ve released it on Hackaday and we received positive feedback. You find all the information to start to build your ADC in this page.
- [3D printed parts printed by a third party service](https://basicairdata.eu/blog/2018/07/24/3d-printed-parts-printed-by-a-third-party-service/): One of our users uploaded Basicairdata STL files to Shapeways online 3D print service. So far the print results are good with this service. Shapeways service can be handy for the people that are not willing to use the STL files or need a fast print. The STL files are available on the dedicated Github repository. The STL files are online browseable, see for example the fixation flange.
- [Follow our Newsletter](https://basicairdata.eu/blog/2018/07/18/follow-our-newsletter/): If you don’t have time to regularly check Basic Air Data site consider to subscribe to our free Newsletter. Usually, it’s sent once per month.
- [Make your Own Pitot-Static (Prandtl) Probe](https://basicairdata.eu/blog/2018/07/01/make-your-own-pitot-static-prandtl-probe/): Do you need measurements of airspeed, make your Pitot-Static probe today! Find all the necessary information in this article here, one short application list is here.
- [Martin B-26 Marauder unlucky maiden flight and total crash](https://basicairdata.eu/blog/2018/06/19/martin-b-26-marauder-unlucky-maiden-flight-and-total-crash/): “B-26 Marauder – Sfortunato collaudo” Martin B-26 Marauder unlucky maiden flight and total crash. Builder and Pilot (from the video credits) Beppe Ghisleri. What a loss!
- [Convair XFY-1 Pogo - VTOL RC model maiden flight](https://basicairdata.eu/blog/2018/06/04/convair-xfy-1-pogo-vtol-rc-model-maiden-flight/): When the well know Ettore Quenda is involved the level of craftsmanship is at the top! Of course, a big team supported him. You see the credits in the video.
- [Fly Test: SkyEye, Air Data Computer Asgard](https://basicairdata.eu/blog/2018/06/01/fly-test-skyeye-air-data-computer-asgard/): A first review of the Asgard ADC Fly Test. True airspeed for the RC enthusiast.
- [Fly Test: Short Video](https://basicairdata.eu/blog/2018/05/30/fly-test-short-video/)
- [Fly Test : Asgard Air Data Computer](https://basicairdata.eu/blog/2018/05/28/fly-test-asgard-air-data-computer/): On Sunday 27th May we tested a SkyEye equipped with an Asgard Air Data Computer and an 8 mm Pitot-Static probe, no mishaps to report. To interface with the ADC, we used the Android Air Data Bridge application. Weather and company were lovely, and wind rarely exceeded ten kph. We took the occasion to shoot pictures and clips, we will post an informal review as soon as possible. So far so good 🙂 Along with the photos, we will post the air data recorded during the flights. A special thank you, in alphabetical order,  to GC, MT, and JLJ! Basic Air […]
- [Resources to learn German Language, Team Building](https://basicairdata.eu/blog/2018/05/24/resources-to-learn-german-language/): Team building is a lovely activity! Language is essential! We’ve used deutschdrang.com  resources for German learners. The website is awesome!
- [Acoustic blockage-detection system, a practical approach](https://basicairdata.eu/blog/2018/05/15/acoustic-blockage-detection-system-a-practical-approach/): “Acoustic methods have been used for detecting blockages in pipes and even the ears of newborn babies for many years. The study, published in Journal of Aircraft, set out to discover if similar methods could be used for real aircraft Pitot tubes” Read more…
- [Seven years passed since the first open release of the basic 8 mm Pitot-Static tube ESP-00!](https://basicairdata.eu/blog/2018/05/08/seven-years-passed-since-the-first-open-release-of-the-basic-8-mm-pitot-static-tube-esp-00/): Air data measurement using do-it-yourself material has been the obsession of Basic Air Data Project since the very beginning.  How to simplify a well-proven design to be useful for makers? Seven years ago we released to the internet a straightforward design for a pitot-static tube, along the time we also published fixation flanges, ADCs, and accessories. Over the years some design failed miserably, others worked lovely. Different probes variants have been manufactured and customized by students and makers around the globe; that make us proud and strong. Thank you to all our contributors and users!
- [BasicAirData GPS Logger: Getting Started](https://basicairdata.eu/blog/2018/04/30/basicairdata-gps-logger-getting-started/): We’ve posted a getting started guide for GPS Logger. We’ve exceeded the 67 K installations!
- [Video: German pilot builds jet-powered model RC plane that can travel at nearly 750 km/h](https://basicairdata.eu/blog/2018/04/11/video-german-pilot-builds-jet-powered-model-rc-plane-that-can-travel-at-nearly-750-km-h/): From the Guinness World record website a new RC speed record. “Blink and you’ll miss it. German airplane pilot Niels Herbrich has officially broken the record for the Fastest remote-controlled jet-powered model aircraft (RC), after his handiwork achieved an incredible speed of 749.221 km/h (465.544 mph).” Continue reading …
- [Support DIY Air Data, Subscribe to our Newsletter!](https://basicairdata.eu/blog/2018/04/06/support-diy-air-data-subscribe-to-our-newsletter/): Subscribe to the Basic Air Data Newsletter! News about DIY Air Data GPS Logger releases
- [Air Data Bridge is out!](https://basicairdata.eu/blog/2018/03/31/air-data-bridge-is-out/): Basic Air Data custom App to interface with the air data computer is out on Google Play store.
- [Air Data Computer Assembly Instructions Updated](https://basicairdata.eu/blog/2018/03/22/air-data-computer-assembly-instructions-updated/): We’ve reviewed the assembly instructions for the air data computer Asgard and added a time-lapse video.
- [¡Hemos empezado a publicar el sitio web en Español!](https://basicairdata.eu/blog/2018/03/10/hemos-empezado-a-publicar-el-sitio-web-en-espanol/): ¡Finalmente puedes leer algunos de los articulos de Basic Air Data en Español! Un grupo de aficionados makers Desarolla, prueba y publica acerca de hardware y software DlY para la medición de las propiedades del aire Promociona, usa, y desarrolla instrumentos y métodos de medicion Proyecto no comercial, contribución libre, publicación abierta … mas ¡Mantente al día con el  boletín Basic Air Data![por ahora en Ingles]
- [Dedicated Android App for Air Data Computer Control: Air Data Bridge](https://basicairdata.eu/blog/2018/03/01/dedicated-android-app-air-data-computer-control-air-data-bridge/): Air Data Bridge is a new software to use the Air Data Computer with Android. Although it is under development, we’ve already reached a minimum functionality. The development release is available on Air Data Bridge Github repo. We will publish the app on Google play store as soon as possible.
- [Interactive Vortex Installation at NGV](https://basicairdata.eu/blog/2018/02/15/interactive-vortex-installation-ngv/): https://www.youtube.com/watch?time_continue=4&v=HXI4IPcorSQ Vortex fascination has been captured by an interactive installation.  The Japanese art collective, teamLab uses the movement of visitors to drive vortex motion in National Gallery of Victoria.
- [DIY Air Data Newsletter. Stay updated on the latest posts and special activities!](https://basicairdata.eu/blog/2018/02/06/diy-air-data-newsletter-stay-updated-latest-posts-special-activities/): Free Newsletter, Open Project Subscribe to DIY Air Data Newsletter.  Stay updated on the latest posts and special activities!
- [Air Data Computer Performed on Hackaday](https://basicairdata.eu/blog/2018/01/25/air-data-computer-performed-hackaday-io/): The air data computer performed on Hackaday Check out this article! Not to mention that Hackaday is a unique and impressive resource for DIYers. We thank all the Hackaday staff, and we salute in particular Tom Nardi. Hat tip to all the Basic Air Data collaborators.
- [Air Data Computer: Getting Started](https://basicairdata.eu/blog/2018/01/23/air-data-computer-getting-started/): We’ve written down a getting started article.  That should help the new ADC users after the first firmware upload.
- [Updated 3D Drawings for 8mm Pitot-Static Probe](https://basicairdata.eu/blog/2018/01/01/updated-3d-drawings-for-8mm-pitot-static-probe/): We’ve published the 3D models of the 8 mm Pitot-Static probe on a dedicated repository. We used Freecad to generate the models.  
- [Check out "What have I gotten myself into! "](https://basicairdata.eu/blog/2017/12/26/check-out-what-have-i-gotten-myself-into/): I dare you to find another DIY blog with so many insights into airplane technique. Simply amazing content. Starting from the idea up to the machining without neglecting installation and design. I rather say, from zero to hero! :-). So, check out now What have I gotten myself into! blog.  
- [ADC Asgard Prototyping Process Ended](https://basicairdata.eu/blog/2017/12/01/adc-asgard-prototyping-process-ended/): We’ve just ended the ADC Prototyping process. So far the unit is performing well! The Github posted firmware is providing basic functions and it can communicate with an Android phone. This time the hardware seems sturdy and easy to assemble(under two hours to complete a unit). In the next period of time, we will test the ADC is particular applications and consequently, update the firmware. In other words, we will focus on software. All the resources, including all the info to DIYers, are posted in this link. It seems that we will enjoy a lot this unit during the next cold season. A special thank […]
- [New commercial miniature probe released](https://basicairdata.eu/blog/2017/11/29/new-commercial-miniature-probe-released/): Swiss Air Data just released a new small commercial air data boom. Check out the specs. It is made of composite materials. It is light, only 0.2 kg.
- [Best Places to Walk](https://basicairdata.eu/blog/2017/11/12/best-places-to-walk/): We’ve been told of this interesting website,  bestplacestowalk.com. A newborn collection of walk paths created by GPS users. They are using also our GPS Logger android application. Worth a try!
- [Performing on PJRC website](https://basicairdata.eu/blog/2017/11/09/): The PJRC site published our ADC here. Be sure to have a look at the PJRC website; it is plenty of interesting resources. PJRC created the Teensy microcontroller board that we use in the ADC. Cheers, Basic Air Data Team        
- [Building Microfluidic Circuits](https://basicairdata.eu/blog/2017/11/06/building-microfluidic-circuits/): https://www.tumblr.com/fuckyeahfluiddynamics/166537045968/building-microfluidic-circuits-is-generally-a
- [1/2 Scale X-56 Research Plane](https://basicairdata.eu/blog/2017/10/29/12-scale-x-56-research-plane/): Walk around of the X-56 plane by Curtis Olson. Scale 1:2. A magnificent research platform.
- [Resource highlighting, leave your comment](https://basicairdata.eu/blog/2017/10/23/resource-highlighting/): We’ve received excellent and warm feedback about ADC project. Some user informed us that they have issues related to material procurement, that is a good point, and we are trying to do better under this aspect. Regarding the ADC printed circuit board and the enclosure, we ask you to comment here below about your current online provider. Where to 3D print the enclosure? Where to buy the PCB? Comment here below.
- [Check out Fluidity Computational Fluid Dynamics Code](https://basicairdata.eu/blog/2017/10/15/check-out-fluidity-computational-fluid-dynamics-code/): Multiphase CFD within an Open and Free Fluidity Software. Brillant.
- [GPS Logger Translation RSS Feed](https://basicairdata.eu/blog/2017/09/30/gps-logger-translation-rss-feed/): It is now possible to use an RSS client to keep up to date with GPS Logger Tranlation project. Here you find the RSS feed. Enjoy GPS Logger!
- [Intro to Dimensional Analysis](https://basicairdata.eu/blog/2017/09/01/intro-to-dimensional-analysis/): How to take care of different dimension during aerodynamic testing? EM
- [Updated Air Data Computer Album](https://basicairdata.eu/blog/2017/08/14/updated-air-data-computer-album/): The internal silicone tubing of the ADC shall have an outside diameter 2.5 and 1.5 mm of internal diameter. ADC Pictures galleries in this link, it is a work in progress.  
- [-= Attention extreme UAS content =-](https://basicairdata.eu/blog/2017/08/06/untitled/): We found by luck this blog, Erik exchanged some words on the socials with the author Curtis Olson. It’s excellent stuff. If you want to see serious hardware and software at work this the right (and almost unique) place to go.      Details are not filtered in any way, it’s lovely to browse through the media. As an example, I report to you the picture one of the two alfa/beta vanes that are mounted on an experimental airplane by Olson. Original comment by Olson is ” …Mass properties and moments of inertia are being carefully recorded prior to flight in […]
- [Dynamic stall of an aerofoil in ramp-up motion - Video -](https://basicairdata.eu/blog/2017/07/27/dynamic-stall-of-an-aerofoil-in-ramp-up-motion-video/):    
- [What if we use two differential pressure sensors on the same Pitot?](https://basicairdata.eu/blog/2017/07/26/what-if-we-use-two-differential-pressure-sensors-on-the-same-pitot/): What if we use two differential pressure sensors on the same Pitot? Considerations on accuracy in this article. Dual Sensor Airspeed Measurement
- [Angle of Attack Unit Teardown](https://basicairdata.eu/blog/2017/07/02/angle-of-attack-unit-teardown/): Have a look at this video, you can see the internals of a mechanical angle of attack vane.
- [Files sent out for production](https://basicairdata.eu/blog/2017/06/07/files-sent-out-for-production/): The ADC project is evolving at a fast pace, we are approaching the prototype test phase. The enclosure and the PCB have been sent out for manufacturing. It is possible for the user to select among different hardware configurations. Tested Bluetooth modules BlueSmirf  HC-05/HC-06 Pneumatic connection to ADC Snap-in for 4 mm OD plastic pipe Barbed connection for silicone tubing 2-4 ID diameter Salutations, Basic Air Data Team  
- [Version 1.0.5 of bluetoothhelper has been released on #bintray](https://basicairdata.eu/blog/2017/06/05/version-1-0-5-of-bluetoothhelper-has-been-released-on-bintray/): Following an amazing feedback, the Bluetoothhelper library has been published online under a Maven/Gradle form. That will allow a faster integration within your project, the library is general purpose. You find the latest release here https://bintray.com/basicairdata/maven/bluetoothhelper/1.0.5 The library is the same that is used to interface with the Air Data Computer, it maintains his open and free nature. Just add to your code  compile 'eu.basicairdata:bluetoothhelper:1.0.5' Update Library published on Maven Central too. The code for inclusion is: <dependency> <groupId>eu.basicairdata</groupId> <artifactId>bluetoothhelper</artifactId> <version>1.0.5</version> <type>pom</type> </dependency>
- [GPS Logger in Depth Review and Tutorial](https://basicairdata.eu/blog/2017/04/03/gps-logger-in-depth-review-and-tutorial-by-the-centre-for-geoinformatics-iifm-bhopal-india/): We’ve been told of this pretty detailed article that is centered on Basic Air Data GPS Logger application. The author prepared detailed documentation in PDF format and a video tutorial. That is great stuff. You find the original article in this link. The material is linked also on our site
- [3D CAD Model for Teensy 3.6 Board](https://basicairdata.eu/blog/2017/03/25/3d-cad-model-for-teensy-3-6-board/): Download now the ready to use 3D model for the MCU board 3.6 Teensy https://github.com/BasicAirData/AirDataComputer/tree/master/Hardware/3D%20support/teensy3.6
- [8 mm Basic Air Data Probe Tested in Wind Tunnel](https://basicairdata.eu/blog/2017/03/24/8-mm-basic-air-data-probe-tested-in-wind-tunnel/): Hello everyone! Good news. An 8 mm BAD probe was tested in a wind tunnel! We’ve been told that the Basic Air Data, DIY oriented 8 mm probe performed well within a wind tunnel You can read the full article about the wind tunnel here.  PDF report “Air Data Instruments – Calibration and Discussion”  available for download. Regards, BasicAirData Team
- [Short intro to RESTful web services with Android Client](https://basicairdata.eu/blog/2017/03/16/short-intro-to-restful-web-services-with-android-client/): A support article about the practical deployment of a RESTful Webservice. Handy in many occasions. Short intro to RESTful web services with Android Client  
- [Translation proceeds!](https://basicairdata.eu/blog/2017/03/16/translation-proceeds/): We are into the final stage of the translation process for three languages Hebrew Italian Spanish You find the details here https://crowdin.com/project/gpslogger We’ve added two supplementary languages. Portuguese and Portugues/Brazilian Great collaboration! Cheers
- [Released GPSLogger v2.1.4 on GitHub](https://basicairdata.eu/blog/2017/03/10/released-gpslogger-v2-1-4-on-github/): The release v2.14  of GPSLogger is available on GitHub. To date, more than 34000 people installed GPSLogger around the world. Thank you to users and contributors.
- [Translation in Progress](https://basicairdata.eu/blog/2017/02/28/translation-in-progress/): The good news here. From now on we will post all the translatable text, of apps, to Crowdin. We’ve got the status of Open Project on Crowdin, we thank Crowding for his support. The access to the platform is free and it is granted after a fast user creation, an email address is necessary. You find the GPSLogger translation project in this link. https://crowdin.com/project/gpslogger Github correlated content https://github.com/BasicAirData/GPSLogger/issues/16#issuecomment-283035183 Implementations of unlisted languages are welcome! Cheers, Basic Air Data Team
- [Valve Selection and Simulation](https://basicairdata.eu/blog/2017/01/20/valve-selection-and-simulation/): Valve Selection and Simulation  
- [Happy New Year 2017!](https://basicairdata.eu/blog/2016/12/31/happy-new-year-2017/): A special thank you to all the contributors! Basic Air Data Team 
- [GPSLogger 3D visualization within QGIS](https://basicairdata.eu/blog/2016/12/17/import-gpslogger-tracks-within-qgis/): Our GPSLogger has been around for awhile, over the time the number of practical applications increased steadily; this and similar articles aim to expose some of them. We will show ho to import our logged data into a Geographic Information System or GIS and visualize the recorded path over a 3D landscape. In particular, we will use the free and cross-platform QGIS  (2.14.3). Screenshots have been acquired on a Fedora 25 Linux PC. An advantage of the use of GIS is the possibility to programmatically store data, process data  and to integrate information from different sources. We will show here how to use earth […]
- [Time Lapse of Pitot Flange 3D Print Process from Munich Maker Lab](https://basicairdata.eu/blog/2016/12/11/time-lapse-of-pitot-flange-3d-print-process-from-munich-maker-lab/): We are focused on designs that can be implemented with DIY tools. So,  I contacted a member of the Munich Maker Lab, Jan Wingewfeld. As usual, we asked for the feasibility of our 3D printed parts. Guess what? Jan printed the part in real time! And sent to us the time lapse video! I found here an unparalleled collaboration spirit. Jan used a German RepRap Neo for the 3D print. J@basicairdata
- [Newbie's guide to import GPSLogger tracks into QGIS](https://basicairdata.eu/blog/2016/11/26/newbies-guide-to-import-gpslogger-tracks-into-qgis/): So you have downloaded and installed the application ‘GPS Logger’ on your phone and recorded some ‘Placemarks’ and/or ‘TrackPoints’. In the example below, I recorded a short walk from my house to pub (in settings, I changed ‘collecting density’ to 1 meter) putting a Place Marker at the start and end of the walk. 1. Share the *.gpx data that you have just recorded with your computer by clicking on it and then clicking ‘Share with …’. 2. Open QGIS www.qgis.org on your computer. 3. If not already installed, install the ‘GPS Plugin’. https://docs.qgis.org/2.0/en/docs/user_manual/working_with_gps/plugins_gps.html 4. Click [Vector / GPS / […]

## Pages

- [Measurement](https://basicairdata.eu/knowledge-center/measurement/)
- [Construction](https://basicairdata.eu/knowledge-center/construction/)
- [Design](https://basicairdata.eu/knowledge-center/design/)
- [Computational Fluid Dynamics](https://basicairdata.eu/knowledge-center/computational-fluid-dynamics/)
- [Background Topics](https://basicairdata.eu/knowledge-center/background-topics/)
- [Zen Pitot Flange and Pitot Cover](https://basicairdata.eu/projects/pitot-probe/zen-pitot-flange-and-pitot-cover/): Zen Flange Pitot Pitot-Static-Probe Pitot-Static Probe Manual Pitot Test Pitot Simulation Pitot Cover
- [Zen Flange](https://basicairdata.eu/projects/pitot-probe/zen-pitot-flange-and-pitot-cover/zen-flange/):   Our most popular 8mm pitot flange uses two 3D printed barbed nipples as connectors for pneumatic lines. That design is functional, yet the user is required to drill holes in the nipples with a 1mm drill, which can be quite a task. To alleviate that burden, we decided to produce a new nipple design, with the code-name Zen. The resulting flange is also easier to 3D print. The assembly is fast and revolves around a signle 3D printed part (STL file). An assembly cheat-sheet can be seen in Figure 2. The assembly procedure doesn’t consist but of trimming three tubes […]
- [Pitot Cover](https://basicairdata.eu/pitot-cover/): Free 3D model file here, in this link a 3D print service already set up, suitable for use with 8 mm Pitot. A Pitot cover is a simple device that have the finality of protect the pitot unit at rest or during the storage, pitot main enemies are dust moisture and mechanical tip damage. Entrapped moisture and condensate can lead to wrong measurements and to premature sensor failure. A good cover must ensure that rain, dust and insects cannot enter the pressure lines nor yet allow the insects to go live inside the unit. The pitot cover must also be highly […]
- [No Access](https://basicairdata.eu/no-access/): [dlm_no_access]
- [Von Kármán Street Tutorial](https://basicairdata.eu/knowledge-center/computational-fluid-dynamics/von-karman-street-tutorial/): This is a tutorial like article about the CFD simulation of a classical, Von Kàrmàn vortex street example.  Some basicairdata instruments, as angle of attack vane, can be affected by  vortex wake. Video V25.1 Preliminary simulation output The tutorial-like material will be referred to the following, free to download and to use software : 2D Sketching,Freecad,  Draftsight Mesher, prepocessor Salome FEM engine, Elmer CSC FEM postprocessor, Paraview The article will follow this scheme Sketching of the simulation layout Meshing of the simulation domain Non steady simulation run 1 Considerations on the step-time and simulation run 2, example of bad convergence due to […]
- [Pitot Lag Simulation](https://basicairdata.eu/knowledge-center/design/pitot-lag-simulation/): Pitot Lag and Simulation Some time ago at the airfield playing around with a pressure sensor with a sample rate of 50 Hz, I noticed an inferior unexpected performance of my carbon fiber Pitot. You know, the measuring system is quite simple, one digital pressure sensor connected to an Arduino board, two pressure lines, the static pressure port, and the total pressure port. I ended the post fly analysis with a sole sure fact. I haven’t a math model for the pneumatic transmission line. I needed such a model to calculate the relationship between the amplitude of the port pressure and […]
- [CFD Flow in a Pipe](https://basicairdata.eu/knowledge-center/computational-fluid-dynamics/cfd-flow-in-a-pipe/): Computational fluid dynamics is a versatile and powerful tool, nevertheless it’s scarcely used in DIY applications. Nowadays there are some free CFD software at home maker disposal, the calculation power of personal computers is enough to reasonably cope with CFD design tasks. There are many CFD commercial packages available, as well as a lot of well documented simulation cases, just to stay in topic have a look to the pitot simulation here. CFD commercial codes, and other needed software to complete the toolchain is not in typical DIY maker budget range, hence the numeric example will be carried out using […]
- [References](https://basicairdata.eu/knowledge-center/references/): The reference page needs a major update, maybe an integration with a reference manager. We will do that ASAP. If you want to participate please join. You can download the whole site bibliography .ris file in this link.
- [Inertial Measurement Unit Placement](https://basicairdata.eu/knowledge-center/compensation/inertial-measurement-unit-placement/): In this post, I will expose a numerical compensation technique for the acceleration measurements of an airframe, this kind of compensation require the knowledge of airframe angular rates. The measurements are usually available from an Inertial Measurement Unit. Gyroscopes measurements don’t need to be compensated. Accelerometers measurements are affected by the position of the IMU respect to the center of gravity. In an ideal layout, the measurements don’t need to be compensated and the accelerometers are placed exactly over the center of gravity C.G., although that will rarely happen. On many airframes, the center of gravity is located over or […]
- [Pitot Correction for Position and Angular Rates](https://basicairdata.eu/knowledge-center/compensation/pitot-correction-for-position-and-angular-rates-html/): Pitot probes are widely used on DIY aircraft and have proven to be to be a robust and reliable method to measure airspeed. Their basic principles are explained in the following link. Installation position and the angular rates of the carrying vehicle affect Pitot probe measurements. In this article, I will present some corrections that should be applied to the Pitot measurements to remove such disturbances. Prior to problem definition, let me stress the fact that Pitot probes, at least their total pressure port, are designed to minimize the uncertainty caused by non-zero angle of attack or angle of sideslip. […]
- [Pitot Test](https://basicairdata.eu/knowledge-center/calibration/pitot-test/): Check this article, 8mm BAD probe was tested within a wind tunnel Test and calibration represents the difference between obtaining meaningful data or not. Calibration is a preliminary phase, non necessary involving any flight activity as wind tunnel activity, that provide a systematic procedure to determinate the operating parameters for the pitot. Test is refereed to the routine procedures that must me carried out to be sure, to some degree of confidence, that our instrument is operating good. Here it will outline some basic procedure, that come mostly after the DIY approach. At the end we will add uncertainty information […]
- [Introduction to Sensor Testing](https://basicairdata.eu/introduction-to-sensor-testing/): General considerations about air data instruments sensors calibration and test. Secondary test and calibration Air data intruments are composed by two main subsystems, the primary that is in contact with the air stream and the secondary that represents everything else. The secondary includes sensors, electronic interfaces and software. On a regular basis is necessary to test secondary components. Within this document a general model for linearized sensors is examined. After a general introduction, a numeric example will be introduced. Instrument-specific calibration and test procedures, can be found on the instrument test section of the site, where available. A sensor responds […]
- [Site setup](https://basicairdata.eu/knowledge-center/calibration/site-setup/): To get maximum performance from flight instruments and advanced attitude and position state estimators it’s useful to have some environmental data of our airfield.Having environmental data isn’t crucial, but it significantly reduces the limitations caused by uncertainty. Knowledge of the exact altitude of the airfield and ground barometric pressure enables us to recalibrate the aircraft altimeter prior to take off and, if an uplink is available, also during the flight; with altimeter calibration prior to every flight the sensor drift issues are mitigated. It is always useful to send information on ground wind to the aircraft. It can be used […]
- [State Estimation, GPS-Aided Altimeter](https://basicairdata.eu/knowledge-center/measurement/state-estimation-gps-altimeter/): The value of telemetry data can be enhanced by the application of basic estimation and modeling techniques. In most real-life cases, even in the simplest systems, it is either too expensive or impossible to measure every relevant variable. Thus, one needs to make do with a reduced number of sensors, which are also quite noisy. In these articles, I will present a complete application example in the form of a miniseries. The core idea is to investigate the performance of an algorithm that uses data from accelerometers and a GPS to enhance altitude measurement. That method should be implementable on […]
- [Flanged Pitot](https://basicairdata.eu/knowledge-center/construction/flanged-pitot/): Assembly indications Typical applications After prolonged use of the standard 8 mm pitot tube some installation problems have been reconsidered and solved, so now the classical model can be suited with a fixation flange. To speed up your work you can find here a 3D .stl file of the assembled probe, check the animation of the model. The use of the two brass pipes as impulse lines is simple but they can’t be trimmed near the pitot body, if they are shortened or bent around likely they will leak or break away, therefore overall dimensions are considerable. A workaround for […]
- [Power System Reliability Considerations](https://basicairdata.eu/knowledge-center/design/power-system-reliability-considerations/): Note: Page needs rewriting. Do you want to contribute? Introduction The power system is an essential part of every flying device. If the power system fails then our beloved flying platform will fall out of the sky, and sometimes the damages can even include our calibrated air data instrumentation! The solution is a redundant power system. We will discuss here on the reliability of a range of commonly used power system layouts. Prior to considering the performance of any layout we will first discuss the reliability of a battery pack alone. Battery packs are composed by single cells, connected in series […]
- [Pitot-Static Probe (Prandtl)](https://basicairdata.eu/knowledge-center/design/pitot-static-probe/): Check this article, 8mm BAD probe was tested within a wind tunnel Applications, Assembly notes. GitHub repository with 3D files [Best_Wordpress_Gallery id=”19″ gal_title=”Pitot 8 mm”] Introduction[1] General arrangement drawing PDF. 3D printed parts can be used instead of lathe machined parts. Drawings are freely available. Check also flanged pitot section. Widely used, the pitot tube is the backbone of air instrumentation. It’s the primary instrument for relative speed determination. Once the speed with respect to surrounding air is known it’s possible to estimate many different aerodynamic variables, for example, the actual lift value. Look at Figure 1, here you find […]
- [Angle of Attack Vane](https://basicairdata.eu/knowledge-center/design/angle-of-attack-vane/): Attention. The page needs reformatting. If you think you can do better, please contact us 🙂 This page is a merge of different posting The angle of attack wind vane, or alfa beta construction drawings are available here. Angle of attack can be measured by mean of a mechanical wind vane. Here below detail drawings for make your own vane, some dimensions can vary from this exposed example.This kind wind of vane can be used as stand alone unit or integrated into an airdataboom or in a alfa-beta vane. Introduction We introduce the angle of attack measurement using wind vanes. […]
- [Wing Tip Pitot Probe installation](https://basicairdata.eu/knowledge-center/design/wing-tip-pitot-probe-placement/): This short article complements the page in this link on placement on the Pitot probe on the nose of the fuselage. Here, we examine a Pitot-static installation on the leading edge of the main wing. The experimental approach is the only way to acquire accurate data for a particular airframe. Nevertheless, if the requirements for accuracy are not tight, an “upper-bound error” approach can be used. In the DIY world, one does not see often a Pitot probe placed on the wing, at the flying fields. However, this method of placement is adequate for a very wide flight envelope. Two approaches […]
- [Nose Cone Pitot Probe Installation](https://basicairdata.eu/knowledge-center/design/nose-cone-pitot-probe-installation/): The placement of the Pitot probe is a rather neglected topic which, by its nature, doesn’t have a closed form solution. This article examines this problem and provides an estimation of the resulting static error. Airspeed probes and altimeters rely on the measurement of static pressure. From the end-user standpoint, problems may arise when the unit is installed on the airframe: even the most accurate Pitot probe can have installation-related issues. These are commonly called “position errors” and depend on the position and orientation at which the probe is installed and on the airframe-specific aerodynamics. The probe has two pressure ports, […]
- [Air Data Boom Requirements](https://basicairdata.eu/knowledge-center/design/air-data-boom-requirements/): Find here an introduction to BasicAirData Open Project  Design constrains of a basic air data system is highly application dependent, herebelow you find a general arrangement that seem correct for many RC/FPV/UAV aircrafts. You will  find indications about early stage requirements. The figure below refers to an airboom built by the authors, often the same measures can be take with separate devices. What are we supposed to measure? Basic airdata is all about measurements that can give information about physical characteristics of the air mass that surrounds the aircraft. The air is assumed to be dry, so nothing must be […]
- [Coordinate System](https://basicairdata.eu/knowledge-center/background-topics/coordinate-system/): When referring to aircraft position, velocity, acceleration, orientation and angular velocity, the coordinate system in which they are expressed should always be mentioned. While frames of reference are arbitrary and everyone can use a different one to get the same results, it is convenient to use a common one. This makes it easy to share calculation procedures and data and compare them directly. Also, let’s not neglect the fact that some coordinate systems are more intuitive to work with and are more suitable for specific work cases. A few options are available, when it comes to choosing a coordinate system […]
- [Uncertainty](https://basicairdata.eu/knowledge-center/background-topics/uncertainty/): In the case where our telemetry data is used for system identification purposes, health management or similar tasks, the need for an indication of our sensor reading accuracy arises. It simply makes no sense to take the trouble to produce elaborate telemetry data if it’s not known how reliable the result is. As an example of air data usage consider a system that checks real time data from the Pitot tube, the GPS and the engine thrust to evaluate subsytem failure status [1]. Below I outline the procedure for total uncertainty calculation. Details and the calculation routines will be presented in […]
- [Air density, Speed, and Temperature](https://basicairdata.eu/knowledge-center/background-topics/density-and-air-temperature/): Air density is a typical case of measurement derived from air data. Let’s investigate the relationship between air temperature and air density, which, incidentally, is the base of the external air temperature measurement in moving vehicles. Commonly the air density can be calculated with an equation of state or with an interpolated best-fit curve. In both cases, we have to deal with an equation of the form . Let’s make things a bit simpler and start with a simple relationship between density and temperature:     The temperature in the SI is measured in degrees Kelvin, but many equations of state may […]
- [Resistance Temperature Detectors Software for Android](https://basicairdata.eu/projects/android/android-rtd/): Download our free software using the Google Play™ store app: Find in this link the GitHub repository, free source available for download. We have just released a new update of the BasicAirData Resistance Temperature Detectors App. RTD Privacy Policy. This application can be useful during an Outside Air Temperature probe use.   App’s features: Calculation of temperature from resistance measurement Full reference of used calculation algorithms online available in this link Compatible with Android 2.2 and above The app can handle any type of sensor that follow the Callendar-Van Dusen equation, for example (PT stands for platinum) PT100, PT250, PT500, PT1000. […]
- [Air Data Properties for Android](https://basicairdata.eu/projects/android/air-data-properties-for-android/): Download our free software using the Google Play™ store app: Find in this link the GitHub repository, free source available. Air Data Properties privacy policy. We have just released a new update of the BasicAirData Air Properties App. This app features calculation, for moist air, of: Air density Viscosity Compressibility factor Vapor pressure Speed of sound Full reference of used calculation algorithms online available in this link. This app is compatible with Android 2.2 and above; Download now your application copy using this QR-Code:
- [BasicAirData GPS Logger](https://basicairdata.eu/projects/android/android-gps-logger/): Test our new, unpublished beta pro app! contribute to maintain our free open source app!   Find in this link the GitHub repository, free source available. Main Links Getting started guide Application notes, usage details, and tutorials by our users Localization/Translation project Introduction In this page we are going to describe the Basicairdata GPS Logger For Android, focusing on the main features and exposing some background technical aspects. GPS Logger is a simple App for recording your position and your path. You can record your trips, annotate your placemarks along the way, view your position, speed, altitude, direction, and many […]
- [Barometric Altimeter](https://basicairdata.eu/projects/barometric-altimeter/): Page under maintenance, do you want to contribute? Introduction Air Data Computer project here he Most used method for altitude measurement in airborne vehicles is by mean of static pressure readings; which is referred to as barometric altitude. The working principle is simple and can be visualized recalling Stevin’s law for hydrostatic pressure calculation. As an introductory example, I will use the estimate of a bathtub water level. Refer to Figure 1 for a section view of a bathtub. The bathtub is filled with water at a temperature \(T_{W}\) of 40 degrees Celsius while the current atmospheric pressure \(P_{atm}\) is […]
- [Pitot-Static Probe Calibrator](https://basicairdata.eu/knowledge-center/calibration/pitot-static-probe-calibrator/): Prior to any data collection endeavor, it is advisable to test the response of the airspeed sensor through the entire span of the measured quantity. Such procedures are followed on equipment installed on commercial airliners and private airplanes. In this article, a general method is presented, which can be used in a DIY context. Moreover, a test rig is presented and a simple design for a pressure source is proposed. Finally, an example data file for the calculations is provided. During a basic Pitot probe calibration, the total and static pressure ports are pneumatically connected to a test instrument. The […]
- [Removable Pitot Flange and Cover](https://basicairdata.eu/projects/pitot-probe/removable-pitot-flange-and-cover/): Removable Pitot Flange and Cover Removable Pitot Flange Pitot-Static-Probe Pitot-Static Probe Manual Pitot Test Pitot Simulation Pitot Cover
- [Flanged Pitot Probe and Pitot Cover](https://basicairdata.eu/projects/pitot-probe/flanged-pitot-probe-and-pitot-cover/):   Flanged Pitot Pitot-Static-Probe Pitot-Static Probe Manual Pitot Test Pitot Simulation Pitot Cover
- [Air Data Boom](https://basicairdata.eu/projects/air-data-boom/): If you are interested in publishing the probe 3D model in a neutral file format please read here. Download general arrangement drawing PDF and vane assembly PDF here.Please download the full set of pdf build plans here STL file of the air data boom here For demanding telemetry or model identification applications the use of an appropriate air data boom is required, a DIY well tested design is here presented. Angle of attack wind vane, or alfa beta drawings are available here. The presented data boom can measure: Angle of attack and angle of sideslip are measured by mean of a […]
- [Altimeter System Integration](https://basicairdata.eu/knowledge-center/construction/altimeter-integration/): Software and basic procedures for altimeter operation Here you can download the Arduino sketch firmware for your just build barometric altimeter. Used absolute pressure sensor is a SCP1000, you can download the datasheet here, this sensor have a digital SPI interface and a range of 30 kPa-120 kPa. This sensor can be incorporated in a ground station, it have an embedded temperature sensor that, accuracy apart, can be useful to experiment with compensation procedures. Hardware is composed by an 3.3 V Arduino Pro running at 8 Mhz and an 3.3V SCP1000 breakout board. Wiring is straightforward, refer to the Figure 1 […]
- [Pitot System Integration](https://basicairdata.eu/pitot-integration/): This project is some year old, check in this link the new air data computer. The simplicity of layout come straight from the main decision to use a fully digital platform. Main differential pressure sensor is from HCLA family from Sensortechnics, 12.5 mBar differential range (measuring range up to 42m/s)  and one I2C digital interface.This sensor is  light and with a small footprint and is fully internally compensated, with really good overall performances documented on the datasheet. Find the layout in Figure 1, the bill of materials is on the table TPI. 2. Selected Microcontroller is an Arduino 2009 operating […]
- [Altimeter Firmware](https://basicairdata.eu/projects/altimeter-firmware/): Check out this updated project here Here you can find the firware for your Arduino board based altimeter, refer here for the wiring details. Supplied sketch will continuously output three different altitude readings in a pleonastic verbose format through the comport. The first kind of reading is the altitude calculated using the standard day conditions of 15° and 101325 Pa at sea level. Second altitude is calculated using sea level pressure from an external source, as weather service, Metar or AWOS, likely in DIY application you can get this information from a ground station at the airfield; this altitude can […]
- [Pitot Firmware](https://basicairdata.eu/projects/pitot-probe/pitot-firmware/): Updated material here [Check also alternative sensor TE-MS4525DO] Software and basic procedures for pitot operation. Here you can download the Arduino sketch firmware for your 8mm hemispherical head pitot circuit. Depending on the specific application, to manage available computation power and communication bandwidth, it’s often needed to trade off on requirements. Broadly speaking our sensor board should: Insulate the sensor/sensor board from other electronic parts; Do some analog signal conditioning; Read signals from sensor; Use basic sensor calibration data; Run a digital filter on data; Add timestamp to data and manage communications; The proposed circuit provides the mains components of a […]
- [Calculation Routines](https://basicairdata.eu/projects/calculation-routines/): Some calculations software for common applications Script section is microcontroller oriented.
- [Air Data Computer](https://basicairdata.eu/projects/airdatacomputer/): Air Data Computer releases Asgard DIY resources and media Former release Amaranth i2[Archived 1st of March 2017] Introduction Air data can be used in a wide range of situations. That generic term encompasses different measurements from heterogeneous equipment. Typically sensor data reduction is carried out inside a unit called Air Data Computer or shortly ADC, Flow Computer or with similar names depending on the field of application. Simpler units may report only atmospheric pressure and temperature, most complex units may report air data compensated with inertial measurement units. What kind of sensors are needed and overall measurements uncertainty depends on […]
- [Friends](https://basicairdata.eu/links/): Page under maintenance! This page is new if something is missing contact us. Hat tip to every contributor of Basic Air Data! Along the year’s many people participated in the project, they simply made  Basic Air Data great. Is there no limit to your awesomeness? Thank you! Localization Localization is an important task, carried out by amazing volunteers on Crowdin. Special thanks to all the people that contributed to GPS Logger localization projects. Special thanks to Crowdin platform staff! Friends, Alphabetical Order Aerofred “Latest Model Airplane Plans” 8 mm Pitot Tube Bestplacestowalk  “Click here to start searching for good walks anywhere […]
- [About](https://basicairdata.eu/about/): Basic Air Data is an Open and Free project. This website is intended to share design, testing, and every field experience regarding DIY basic air data instruments. Are you building your own air data computer? Air data boom? Thinking about a great CFD simulation? There is no money behind this open project, only passion, and desire to do something useful. Contents have been produced over an extensive period. So, the quality of the text is variable. If you are willing to fix this or another aspect, you are welcome to contribute. Follow the Newsletter or the RSS Feed to keep you up to […]
- [Library](https://basicairdata.eu/knowledge-center/): Links and Friends Newsletter Archive with Attachments
- [Projects](https://basicairdata.eu/projects/)
- [Air Properties](https://basicairdata.eu/knowledge-center/background-topics/air-properties/): Whenever we deal with top level design or with some instrument detail engineering it is necessary to know air data properties. Air properties most relevant for air data applications are: Air Density, , Vapor pressure, , Dynamic Viscosity , in SI; for ease of use are reported instead Speed of sound , For standard air data measurements, for example, altitude, also air properties to be used are well defined. Often ISA atmosphere model is used; when a model is used it is possible to compare performances and general results among different designs. Standard air properties are readily computable, and they are […]
- [Short Tutorial: Using Docker to build Android apk](https://basicairdata.eu/projects/support/short-tutorial-using-docker-to-build-android-apk/): From time to time, the need for reproducible builds arises. To ensure this, every software involved in the build process must have the same version. A way to achieve such a result is to use a standard Docker image. I will describe the process of building the Androdi GPSLogger app. Before beginning the build you need to download and install Docker. In this link, by clicking in the left sidebar, you will find all the detailed instructions to install Docker on your platform. After the installation is complete you can type this command If everything is installed and running you […]
- [BasicAirData GPS Pro](https://basicairdata.eu/projects/android/basicairdata-gps-pro/): Attention, right now we are testing an initial release. Stable version is not yet avaliable on Google Play! Please read below. Let us know if you want to contribute, for example testing the pre-releases or contributing with the Crowfunding campaing. According to Google requirements, we need someone external to Basic Air Data to do some closed tests on GPS Pro. Can you lend a hand? Please follow this link! All the GPS Pro contributors will be included in an online contributors list and will have access to a non published release of GPS Pro. Main Links Introduction The idea is […]
- [BasicAirData GPS Logger - Hotkeys List](https://basicairdata.eu/projects/android/android-gps-logger/application-note-gpslogger/gps-logger-hotkeys-list/): Starting from v3.1.4, The main activity of GPS Logger can be driven by hotkeys. The user can send hotkeys to the app using an external keyboard (for example a Bluetooth external physical keyboard), but also using a task automation app. An app of this type, for example, when detects a connection with your car, can start GPS Logger and begin the recording of a new track; when the connection with the car is lost, it can automatically stop and finalize the track. Here below the complete list of hotkeys: R = Start recording P = Pause recording T = Toggle […]
- [Basicairdata GPS Logger Localization Page](https://basicairdata.eu/projects/android/android-gps-logger/basicairdata-gps-logger-localization-page/): Quick facts We need translators and proofreader for GPS Logger App translation The official translation website is on Crodwin We need also to create new social pages dedicated to users in local languages Introduction Right now (2021-12) we have exceeded 100000 downloads of the GPS Logger application from the Google play store. Hard to admit but we don’t expect so much feedback from the GPS’s users community. The translation is carried out on the Crowdin website. As you can see from the Crowdin website, many languages are not yet been released because the translation needs to be translated and held […]
- [GPS Logger - Privacy Policy](https://basicairdata.eu/projects/android/android-gps-logger/gps-logger-privacy-policy/): This page is used to inform app users regarding our policies with the collection, use, and disclosure of Personal Information. Please note that we are not a business. Position Information Any data from the GPS is neither collected nor distributed. GPS data is handled exclusively on the user’s device. Information Collection and Use We will never collect any data about users. Collecting and use of non-personal information We don’t collect any kind of non-personal data. Disclousure to third parties Data will never leave your device, and it’s only available to the user. Contact Us If you have any questions or […]
- [Air Data Bridge - Privacy Policy](https://basicairdata.eu/projects/android/air-data-bridge-privacy-policy/): This page is used to inform app users regarding our policies with the collection, use, and disclosure of Personal Information. Please note that we are not a business. Information Collection and Use We will never collect any data about users. Collecting and use of non-personal information We don’t collect any kind of non-personal data. Disclosure to third parties Data will never leave your device, and it’s only available to the user. Contact Us If you have any questions or suggestions about our Privacy Policy, do not hesitate to contact us at info@basicairdata.eu.
- [RTD Android App - Privacy Policy](https://basicairdata.eu/projects/android/android-rtd/rtd-android-app-privacy-policy/): This page is used to inform app users regarding our policies with the collection, use, and disclosure of Personal Information. Please note that we are not a business. Information Collection and Use We will never collect any data about users. Collecting and use of non-personal information We don’t collect any kind of non-personal data. Disclosure to third parties Data will never leave your device, and it’s only available to the user. Contact Us If you have any questions or suggestions about our Privacy Policy, do not hesitate to contact us at info@basicairdata.eu.
- [Air Data Properties - Privacy Policy](https://basicairdata.eu/projects/android/air-data-properties-for-android/air-data-properties-privacy-policy/): This page is used to inform app users regarding our policies with the collection, use, and disclosure of Personal Information. Please note that we are not a business. Information Collection and Use We will never collect any data about users. Collecting and use of non-personal information We don’t collect any kind of non-personal data. Disclosure to third parties Data will never leave your device, and it’s only available to the user. Contact Us If you have any questions or suggestions about our Privacy Policy, do not hesitate to contact us at info@basicairdata.eu.
- [BasicAirData Clinometer - Privacy Policy](https://basicairdata.eu/projects/android/android-clinometer/basicairdata-clinometer-privacy-policy/): This page is used to inform app users regarding our policies with the collection, use, and disclosure of Personal Information. Please note that we are not a business. Camera and Visual Information Any data from the camera is neither collected nor distributed. Camera data is handled exclusively on the user’s device and never stored. Information Collection and Use We will never collect any data about users. Collecting and use of non-personal information We don’t collect any kind of non-personal data. Disclousure to third parties Data will never leave your device, and it’s only available to the user. Contact Us If […]
- [BasicAirData Clinometer](https://basicairdata.eu/projects/android/android-clinometer/): Find in this link the GitHub repository, free source available.Read our Privacy Policy. Introduction Basic Air Data Clinometer is a simple App to measure your device’s inclination angles with respect to gravity’s direction using the onboard accelerometers.It is a basic and lightweight App with geometric-inspired graphics that can be used as Clinometer or Bubble Level.It is intended to measure, not store data. The app measures the following angles: X = (Yellow) – The angle between the horizontal plane and the horizontal axis of the screen Y = (Yellow) – The angle between the horizontal plane and the vertical axis of […]
- [Requirements RRCS](https://basicairdata.eu/projects/redundant-rc-servo/requirements-rrcservo/): Redundant RC servo Standard RC Servo input The unit shall be able to manage all the redundancy related aspects without external inputs. Voltage 4.8V, 5V 6V , 7.4V, 8.4V? Linear or rotary? Speed? 5.2 1/s ? 312 rpm?0.2 seconds 60 degrees? 0.09 m/s? Torque? 100mNm, 150 mNm, 200 mNm? 10, 15, 20 kgcm? Dimensions? 70mmx25mmx80 mm? Weight? 150 grams? Cost?
- [Software - RRCServo](https://basicairdata.eu/projects/redundant-rc-servo/software-rrcservo/): Redundant RC Servo
- [Electronics - RRCServo](https://basicairdata.eu/projects/redundant-rc-servo/electronics-rrcservo/): Redundant RC Servo Coreless DC Motor
- [Mechanics RRCServo](https://basicairdata.eu/projects/redundant-rc-servo/mechanics-rrcservo/): Redundant RC Servo, Requirements Gear ratio 1 to 20/26 DC Motor stall torque > 8 mNm Able to survive the failure of one motor and one transmission
- [Documentation - RRCServo](https://basicairdata.eu/projects/redundant-rc-servo/documentation/): Redundant RC Servo Here we post everything related and online available for the project Quick pointer: PAG 25, Figura 2.2 RC Servo internals “Definizione di architettura, progettazione e analisi della rigidezza strutturale di un attuatore elettromeccanico fault-tolerant per comandi di volo” Valerio La Placa Split Torque gearboxes
- [Redundant RC Servo](https://basicairdata.eu/projects/redundant-rc-servo/): Dedicated sections: Requirements, Documentation, Mechanics, Electronics, and Software Please note. You can post Italian, English, German and Spanish language comments. English is the language to prefer. ALTERNATIVE APPROACH SUGGESTED BY MT: Instead of making a whole redundant servo from scratch. Provide a PCB that reads signals from the receiver and drives two/more standard RC servos, the board have also access to real-time position of the servos (pots?) You find a editable diagram here. TO CHECK: Redundant gear train by NASA What if a servo fail? Reliability is a primary feature of actuators. No matter what vehicle are you using, a […]
- [Using a Bluetooth GPS Receiver with GPS Logger](https://basicairdata.eu/projects/android/android-gps-logger/application-note-gpslogger/using-a-bluetooth-gps-receiver-with-gps-logger/): Today almost any Android Device integrates a GPS sensor. Sensor performances are balanced to perform quite well during the regular operation without drain too much the battery. If you need more Accuracy or a higher FIX Rate, you can use an external GPS Receiver. You can easily use any Bluetooth GPS Receiver compatible with Android to record your tracks with BasicAirData GPS Logger, by following this simple guide. One-time Operations The first time you connect your Bluetooth GPS Receiver to your Android Device, you have to do the following one-time Operations: Turn on the Bluetooth receiver and then the Bluetooth […]
- [Register](https://basicairdata.eu/register/): Registration is required to contribute and post comments. Your registration to the site will be approved manually. Contact us (i.e. with the contact form) if you think your registration went into the spam folder Consider also subscribing to our free newsletter.
- [F104 Basic Air Data](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/f104-basic-air-data/): This is a work in progress, we will add material as it is available. If you need to keep in touch please subscribe to the Newsletter or contact us. That is very exciting! We’ve been working on an air data computer for an F104 Starfighter (la bara volante in Italian) RC model. The model was built by Daniele a friend RC Modeler from Brescia. As you know, the full-scale plane has a long story. It seems the last one retired from active duty flown in Italy in 2004. In particular, we are working on a semi-scale reproduction of a Cameri […]
- [Asgard air data computer DIY low volume production](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/asgard-air-data-computer-unit-diy-batch/): Do you want to be included in a small DIY batch delivery? Now closed, thank you for your collaboration! Update September 19th: Tested PCB assembly service We can coordinate our efforts with you to produce a small batch of DIY Asgard Air Data Computers/Units. The units will be shipped tested and ready to go. Estimated cost per unit is NaN EUR / NaN USD + Shipping Cost The cost will be lowered as the batch size increases or new info is available Deadline for participation submission is 1st October 2019 The current estimate for delivery is on February 2020 How […]
- [My Account](https://basicairdata.eu/my-account/)
- [QA Profile](https://basicairdata.eu/qa-profile/): [qa_user_profile]
- [Contribute](https://basicairdata.eu/contribute/): Test our new, unpublished beta pro app! contribute to maintain our free open source app! Thank you for considering Basic Air Data! Basic Air Data activity encompasses ten years now. In such a period, we touched different applications and fields of knowledge. We are focused on air data and survey. As a project, we developed a website, software, hardware, mobile apps, and electronics. The project is hobbyistic, and so all the economic induced dynamics are absent. We write content in English, or at least we try. We can do a lot better under many aspects, from the web to video […]
- [Contact](https://basicairdata.eu/contact/): Greetings!Please consider to use Github for support, use advise, bug report, tech questions, and general requests of features.Typically, the answer to the contact form will arrive in 1-3 weeks. Contact form
- [Validation](https://basicairdata.eu/validation/): [user_verification_check]
- [Notes on firmware programming](https://basicairdata.eu/projects/notes-on-firmware-programming/): Basic Air Data uses embedded systems. One fundamental part of such a system is the software. The type of microcontrollers used in our projects may vary, nevertheless across different platforms it is possible to use C/C++ language. Basic Air Data is a project open to anyone, from here the need to coordinate our efforts. Of course, it’s necessary a right balance between rules and participant free will; I’m not willing to participate in a project that leaves me zero liberty :-). It’s also necessary to privilege code maintainability and readability. Typically, critical aspects in firmware coding are the limited available […]
- [Example: Using ADC configuration file to compensate sensor offset](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/example-using-adc-configuration-file-to-compensate-sensor-offset/): The Air Data Computer Asgard can be controlled using the specific command set documented here on the repo. Sometimes it is necessary to compensate the sensors readings for an offset. Let’s pretend we want to compensate for the offset of the differential pressure sensor. That can be accomplished by sending the command $CCS,EXE,1,1 through the ADCs USB or the Bluetooth interface. It will be necessary to recalibrate the unit each time the ADC is power up. That can be quickly done using a free scriptable serial terminal. Alternatively, it may be convenient to use a configuration file stored in the microSD […]
- [BasicAirData GPS Logger - Manual Setup of the EGM Altitude Correction](https://basicairdata.eu/projects/android/android-gps-logger/application-note-gpslogger/manual-setup-of-the-egm-altitude-correction-for-basic-air-data-gps-logger/): One of the most exciting features of BasicAirData GPS Logger is the automatic correction of the GPS altitude error. The main altitude measurement errors are due to the difference between the Earth mean Ellipsoid (the zero-reference of the GPS) and the real Earth Geoid. That difference depends on Latitude and Longitude. Many models describe that Geoid; GPS Logger uses the NGA/NASA EGM96, N=M=360 Earth Gravitational Model, defined by the geoid height file hosted on the National Geospatial-Intelligence Agency site, to calculate the right altitudes over the sea level. When The EGM96 Automatic Altitude Correction is selected for the first time […]
- [Multi-Hole Probe MHP](https://basicairdata.eu/knowledge-center/measurement/multi-hole-probe-mhp/): Measurement of aerodynamic parameters like angle of attack, sideslip, and true airspeed can be performed with pressure based probes; they can be used on all types of terrestrial and nonterrestrial vehicles. These probes are able to reconstruct the desired measurement using information about the pressure distribution over a probe. The mechanical probe can be built on purpose or in particular cases geometrical features of the vehicle may be used as probe surface, like on the NCAR plane you see on the following picture. Multi-hole probe (MHP) technology is suggestive because don’t need for moving parts to operate. That is a […]
- [AirDC Library for basic air data calculations](https://basicairdata.eu/projects/airdatacomputer/airdc-library-for-basic-air-data-calculations/): Refer to the official Github repository for the latest release. Please note that is a work in progress You find here the Doxygen generated library documentation online
- [Brainstorming - Air Data System - Winter 2018/2019](https://basicairdata.eu/projects/air-data-systems/brainstorming-air-data-system-winter-2018-2019/): Status: Open! This page revision number is 135. Contact us or send a comment. Short notes on the brainstorming concerning the next to come air data system. The page will be updated on an irregular basis, it is a work in progress. If you are interested in providing some hints about electronics design/other just contact us or post your suggestions. ErikAir data compute Github repo Click the 3D model to rotate At a glance, hardware under evaluation and issues Sensor’s board Pressure sensors ELVR-L01D-F1RT-I-NA5F, output 0÷4.25V ELVR-L10D-F1RT-I-NA5F , output 0÷4.25V BARO-A-4V-MINI-PRIME , output 0÷4.25V Analog to digital converter 8 ch […]
- [Brainstorming on muli-hole probe DIY Air data Computer](https://basicairdata.eu/projects/air-data-systems/brainstorming-on-muli-hole-probe-diy-air-data-computer/): Update: follow up the brainstorming evolution here. After some private testing with multi-holes probes, it seems time to design and release a new air data system. During the winter period fly activities are slacken, so it’s appropriate to look back to the project and recollect ideas for brand new Do-It-Yourself oriented designs. Regular contributors are well aware of this opportunity. Rookies are welcome. Of course, this activity continues all the year round To make a long story short, we need to design the requirements for a multi-hole probe and the correspondent air data computer. The hardware should be simple to […]
- [GPS Logger exported files: A trip to Montagnoli Lake in Madonna di Campiglio - Trento - Italy](https://basicairdata.eu/projects/android/android-gps-logger/application-note-gpslogger/gps-logger-exported-files-a-trip-to-montagnoli-lake-in-madonna-di-campiglio-trento-italy/): Recently I strolled in Val Rendena. I noticed that Montagnoli lake is not visible on Google Earth so I decided to record my route from the parking near the Golf course to the lake. For the recording of the track, I used GPS Logger 2.1.10. In short, as soon as I departed for the lake, I tapped on the lower right button labeled “Trackpoints” to start to record the track. Once at the lake I stopped the data collection tapping again on the “Trackpoints” button, I saved then the track tapping twice the tick mark on the upper right corner […]
- [Review: DIY Air Data Computer Asgard and Pitot-Static on SkyEye RC Model](https://basicairdata.eu/projects/skyeye/review-diy-air-data-computer-asgard-and-pitot-static-on-skyeye-rc-model/): The velocity of an RC plane with respect to surrounding air, or true airspeed, is never the main issue for the RC pilot. However, it is intriguing to be able to use the same instruments used on full-size airplanes. Tested air data system can record, but not only, true airspeed and altitude, the readings are real-time compensated by the air data computer. We will review here a DIY Pitot-Static probe used with a DIY air data computer; we installed the equipment on a SkyEye RC plane; you can build by yourself your own air data system, complete with probe, software, […]
- [Airborne 8mm Pitot-static tube, ESP series Installation and Maintenance Manual](https://basicairdata.eu/projects/pitot-probe/pitot-manual/8mm-pitot-static-tube-esp-series-installation-and-maintenance-manual/): Manual for standard airborne use. You find the previous pdf release of the 8mm pitot manual here. Table of Contents Contact Information Introduction Installation Overview General Installation Layout Wing Tip/Leading Edge Layout Nose Mount Under Wing/On Wing Strut Mechanical Setup Probe Drawings Pneumatic Connection Introduction The measurement of the airplane velocity TAS/IAS, relative to the air-mass around it, is a common task on an instrumented aircraft. With airspeed data, it is possible to evaluate the aircraft dynamics and the aerodynamic performance; it is a fundamental measurement for system identification and control procedures. Our probes are designed to be mounted on scale models. […]
- [Wordpress Plugins Used for Basic Air Data Website](https://basicairdata.eu/links/wordpress-plugins-used-for-basic-air-data-website/): You find here a list of the free plugins used on our website. A big thank you to all the developers!   bbPress is forum software with a twist from the creators of WordPress. | By The bbPress Community | Broken Link Checker Checks your blog for broken links and missing images and notifies you on the dashboard if any are found.  | By Janis Elsts, Vladimir Prelovac | Contact Form 7 Just another contact form plugin. Simple but flexible.  | By Takayuki Miyoshi | Content Views Query and display posts, pages in awesome layouts (grid, scrollable list, collapsible list) easier than ever, without coding!  | […]
- [BasicAirData GPS Logger - Getting started guide](https://basicairdata.eu/projects/android/android-gps-logger/getting-started-guide-for-gps-logger/):   GPS Logger is a simple App for recording your position and your path. You can record your trips, annotate your placemarks along the way, view your position, speed, altitude, direction, and many statistics about your trips. It works offline (without internet connection), and for this reason it has NO integrated maps. You can access anytime to your recorded tracks using the in-app Tracklist, view them in your preferred external viewer (it must be installed) in one click, save and share them in GPX, KML, and TXT format in many ways. It’s a basic and lightweight GPS tracker focused on […]
- [Pitot Manual](https://basicairdata.eu/projects/pitot-probe/pitot-manual/): Even if the physical probes are the same the way to use the probes is different among the applications. In principle, a dedicated manual is needed for each application. You will find here below the manuals available at the present time. Airborne 8mm Pitot-static tube, ESP series Installation and Maintenance Manual 2014 Pitot Installation Manual, ESP 8 mm
- [Basic Air Data project](https://basicairdata.eu/): Basic Air Data is an Open and Free project.This website is intended to share design, testing, and every field experience regarding DIY basic air data instruments. Are you building your own air data computer? Air data boom? Do you think about a great CFD simulation?If so, you are in the right place!
- [BlackBerry Passport 2018 | Track your route with GPS Logger and Maps.Me](https://basicairdata.eu/projects/android/android-gps-logger/application-note-gpslogger/blackberry-passport-2018-track-route-gps-logger-maps-me/): By QuocHungEdu on Youtube “Have you ever found it not easy to get back to your car in a huge car park? Or you were in the jungle and could not find the way back? Why don’t use these two free offline Android apps in combination on your BlackBerry Passport? The open source GPS Logger developed by BasicAirData is the best app (among many other GPS logging apps) since it is simple, free of charge, and especially extremely battery-friendly! The app running offline means you do not need 3G/4G data or WIFI at all. You can use the app even in the […]
- [Stock transmitter real-time pre-stall warning](https://basicairdata.eu/knowledge-center/measurement/stock-transmitter-real-time-pre-stall-warning/): One appealing use of airborne air data systems is to elaborate real-time sensors feed to obtain actionable information. In a standard system layout the data from the ADC is routed to an elaboration unit (sometimes that unit is conveniently the flight controller itself); given that sometimes we don’t have the necessary room on the flying platform or we desire to reduce the budget of a relatively standard application. Getting down to a practical example, let’s pretend we want to use the data from our 8 mm pitot to enhance our beloved RC scale model flight safety. Having a pre-stall warning […]
- [Write for us Guidelines](https://basicairdata.eu/write-for-us/): Thank you for your interest in writing for Basic Air Data Project! Contact information Submission We are happy to work with people from the open source community. The primary language of the website is English, so contribution should be in English. We will not publish any commercial article nor any paid content. We will be delighted to review your pitch article; please do not send us sales pitches. You should be the author of the submitted article, let us know if you published the same material elsewhere. Topics Related to basic air data measurement, post-processing, and support topics. Check out […]
- [Pitot-Static Dynamics, the Sequel](https://basicairdata.eu/knowledge-center/design/pitot-lag-simulation/): Navier-Stokes based model The topic of Pitot-Static dynamics response is among the hottest of all the time, initial post on the subject generated a significant response; hopefully, the question will generate others correlated articles. It’s clear that if we need to go up with sample frequency, then we need to have next to zero length pneumatic connections. This sensor system air data handbook by Goodrich at chapter two introduces the main characteristics of a centralized and of a distributed air data system. In the same manual at page 4 “Elimination of pneumatic lag (about 1 msec/ft)” is indicated as an […]
- [Connection with Air Data Bridge](https://basicairdata.eu/projects/airdatacomputer/gettingstart/connection-air-data-bridge/): Air Data Bridge is specific control software for the Air Data Computer The Air Data Computer has both Bluetooth and a USB interfaces; it’s possible to communicate with the unit using a specific protocol. Generic, third party, serial terminal software can be used for communications. All the OS or platforms with minimal communication abilities can fully operate with the ADC. However, to enhance even more the user experience a dedicated software needs to be used. Development of Android application Air Data Bridge is underway. At this stage, it is functional and allows microSD card management. Installation The application is on Google play store; all […]
- [Air Data Computer Getting Started](https://basicairdata.eu/projects/airdatacomputer/gettingstart/): After you assemble you Air Data Computer, it’s finally time to use it. No matter what application you are facing, the base operations are identical. You can carry out configuration and data log on PCs, Macs, Smartphones and tablets. Complete communication protocol Example ADC CSV produced file PIPPO01.CSV Getting started 1 – Configuration of measurements (here we setup what and how to log data) USB Configuration (requires a serial terminal): All platforms: It is possible to use the serial monitor provided by the Arduino IDE Windows: Teraterm Linux: Miniterm Bluetooth configuration: A generic Bluetooth serial terminal (many BT terminals are […]
- [The Impact of Humidity on Airspeed Measurement](https://basicairdata.eu/knowledge-center/measurement/the-impact-of-humidity-on-airspeed-measurement/):   Reliable measurement of the True Air Speed (TAS) of the aircraft is crucial for flights carried out by autopilot.  Knowing the TAS may be necessary to inline flight controller adaptation or reconfiguration. In this article, for example, airspeed is used as the switching parameter of a gain scheduling scheme.  To obtain an accurate TAS measurement it is necessary to calculate a precise value of the air density, . If our airframe is flying across the troposphere, the humidity modifies the air density.  We shall use for our density calculations the well-established CIPM Equation for the Determination of the Density of […]
- [Measuring airflow with Pitot tube](https://basicairdata.eu/knowledge-center/measurement/measuring-airflow-with-pitot-tube/): Single point and multipoint airflow measurement are possible with the ADC. In this article, we estimate the flow rate value at a circular pipe section via n multiple velocity measurements. Although this article doesn’t reflect any particular technology, the reader can imagine that velocity measurements themselves are carried out with a Pitot tube or with a Pitot rake placed at the section in question. There are different industrial standards that cover the topic, such as the ISO 3966: Measurement of fluid flow in closed conduits – Velocity area method using Pitot static tubes. We will not follow any particular standard. Still, those […]
- [Login](https://basicairdata.eu/rm_login/): [RM_Login]
- [Submissions](https://basicairdata.eu/rm_submissions/): [RM_Front_Submissions]
- [Moderators](https://basicairdata.eu/projects/collaborators-stuff/forums-rules/forums-rulesmoderators/): We are looking for forums moderators! The forum cannot live without moderators. No specialized IT skills are required. English knowledge is necessary, however, it is not required to be a mother tongue. The main tasks are to support users and find/remove/move/edit the inappropriate posts. If interested please contact us.
- [Flight-data Acquisition Unit](https://basicairdata.eu/knowledge-center/flight-data-acquisition-unit/): During a flight, all the data can be routed to a flight-data acquisition unit. Flight data is heterogeneous in nature and may include Air Data Inertial Navigation System Video feed The type and the number of sensors are not fixed, it is application dependent. Flight-data acquisition unit can be implemented with dedicated hardware or integrated into the software of another avionic unit. Sensor fusion, or similar data processing techniques, can be applied to the data provided by the flight-data acquisition. Examples applications Offline application Aerodynamics parameters identification Airspeed probe calibration Failure models validation Real-time Fault-Isolation and Recovery
- [Asgard Firmware](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/asgard-firmware/): There are two procedures to upload the firmware to the Air Data Computer; The choice method consists in uploading the precompiled .hex file to the ADC board. The second one consists in compiling and uploading of the code. Procedure to upload .hex file to the board Download and copy to the desired local directory the Teensy Loader app for your OS Download the desired release of firmware hex file from the Air Data Computer repository on Github; latest release in this link. Check out the tutorial for your OS on PJRC site Connect the Air Data Computer with a USB cable […]
- [Asgard ADC Custom Printed Circuit Board](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/asgard-adc-custom-printed-circuit-board/): Kicad project files for Custom Printed  Board and files for online print services Note: Check the PCB picture. We’ve sent the protoboard to two different online services. DirtyPCB(Green) and OSHPark(Purple).For OSHPark we have a direct link to the board. So far no critical issues. To complete one ADC electronic board you need the following material (Bill of Material for PCB only) 1x Custom Printed Circuit Board 2x SIL Socket, 4 contacts, Pitch 2.54  (You can solder directly the sensors to the board or use straight sockets strip also). You can buy one connector with multiple contacts (i.e. 32) and split […]
- [Asgard ADC 3D Printed Enclosure](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/asgard-adc-3d-printed-enclosure/): To complete one ADC enclosure you need two printed parts: ASG-001 – Asgard – Base with Manifold (download here the STL file and the Drawing); ASG-002 – Asgard – Upper enclosure (download here the STL file and the Drawing); It is possible to use even the base with manifold alone. We 3D Printed proto parts at Shapeways. You will need also: 3x Barbed fittings CN-M3-PK-2 by Festo, or equivalent 3x M 2×6 plastic/metal screw The external pnematic connections is accomplished with: 2x Push-in fittings QSM, Mini series 153304 QSM-M5-4 If you are willing to use silicone tube  you can use […]
- [Assembly ADC Asgard](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/assembly-adc-asgard/): Asgard ADC main page Check breadboard and prototype assembly here Subparts There are three main parts in an ADC. We have the enclosure, the electronic board, and the firmware. The ADC will perform lovely without the enclosure. Nevertheless, the suggested enclosure will help to attain an excellent mechanical and pneumatic performance. It’s comfortable to prepare before the construction all the materials and tools listed here below. Required Materials Electronic board; 3D Printed enclosure; Firmware   Tools required List of tools Assembly of Electronic Board Pictures from different builds Place the components on the side of the PCB with the text […]
- [Tools ADC Asgard](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/tools-adc-asgard/): At minimum you need this tools or equivalent Soldering iron with wire and soldering flussant Hand male M2 threading tool Hand male M3 threading tool Hand male M5 threading tool Miniature circular saw/Dremel like Saw Blades/Mini hacksaw Scissors/Xacto like knife Screwdriver for the head of yours screws, usually a Philips #0 is fine  
- [Sky Eye Assembly Notes](https://basicairdata.eu/projects/skyeye/sky-eye-assembly-notes/): Some time ago we assembled an RC plane for flight test. Selected model was the Sky Eye by Hobbyking. Assembly was carried out by JLJu and MT, both members of Basic Air Data Team; the whole process took one night to be completed. Open a browser at this link to visualize some pictures of the process. The model arrived with all the necessary hardware except the receiver, the transmitter, and the foam glue. The first operation is to fix the horizontal stabilizer and the vertical stabilizer with the foam glue, the tail comes with pretty nice joints and the coupling […]
- [Air Data Systems Applications](https://basicairdata.eu/projects/air-data-systems/air-data-systems-applications/): RC/Miniature aircraft/Telemetry/Airborne/Bicycle True airspeed measurement Outside temperature measurement Air properties measurement Meteorological probes In-flight thrust measurement Propeller Turbine Variometer Uncompensated Total Energy Netto Control system feed Aerodynamics parameters identification Fault detection Ground/lab based applications Airborne Equipment Calibration Meteorological/Local Meteo Station Fault detection Spirometry Heating, Ventilation, & Air Conditioning Airspeed within piping Flowrate calculation Thermal Energy measurement Fault detection
- [Air Data Systems](https://basicairdata.eu/projects/air-data-systems/): We tested different DIY designs for Air Data Systems components. It’s a work in progress, with differents levels of completion (Send feedback here). Developed units can be considered to be general purpose, often they can operate with standard third party components. We created dedicated native digital project files that are available to the user that is willing to customize his units. Applications of Air Data Systems Most common application is related to flight, for example, radio controlled airplane models. A typical aircraft ADS provides critical flight information as airspeed, altitude, outside air temperature, the angle of attack and angle of […]
- [Dimensional Analysis, Buckingham Theorem](https://basicairdata.eu/knowledge-center/calibration/dimensional-analysis-buckingham-theorem/): In wind tunnel calibration and CFD simulation, we should deal with the fact that our testing conditions are not the same of operating conditions. For example, it is typical to use scaled models rather than full-scale prototypes. We need some way to correlate the results obtained with the scaled model to the real world situation. We will draft a procedure to achieve such a result. First of all, we need to operate in similar aerodynamic conditions. To do so we should work with an identical geometry, in such a situations the flow over the body have the same pattern under […]
- [Dual Sensor Airspeed Measurement](https://basicairdata.eu/knowledge-center/calibration/dual-sensor-airspeed-measurement/): Sometimes we need that our air data system is able to handle airspeed over a wide speed range. Considering small RC planes this kind of measurements are typical when our goal is to study the behavior near the stall. The test flight pattern is usually a simple straight line; the pilot enters into a stall just reducing the throttle and progressively compensating with an increase in the angle of attack. If we are interested in accurate measurements, we may encounter some difficulty in keeping our readings accurate enough at low airspeeds. One possible solution is to use two sensors with different pressure […]
- [SkyEye Pictures](https://basicairdata.eu/projects/skyeye/skyeye-pictures/): [Best_Wordpress_Gallery id=”7″]
- [SkyEye](https://basicairdata.eu/projects/skyeye/): A small RC plane to fly test instruments Unboxing Assembly Notes  Pictures Fly test of Air Data Computer Asgard
- [ADC Asgard Pictures](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/adc-asgard-pictures/): First proto assembly date is 17 July, 2017 [Best_Wordpress_Gallery id=”1″]
- [Geodetic control network and datum check](https://basicairdata.eu/knowledge-center/calibration/site-setup/geodetic-control-network-and-datum-test/): At a national level, we have a certain number of available Geodetic control networks. A geodetic network gives to the users the knowledge of the accurate position of the network control points. From a practical point of view, a marker is placed over each geodetic datum; the territory is usually covered pretty well with control points. For example in Italy it is available the IGM95 network, you can consult online here the position of many geodetic datum over Italian territory. Refer to this particular datum , please note that the location of the marker is explained with reference to local landmarks and illustrated with […]
- [Asgard ADC on Breadboard](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/asgard-adc-on-breadboard/): 20th September Regarding the ADC Asgard Hardware we have no fatal failures to report, no burnouts at all! :-). It seems like we should begin to pack the media for the general release phase. buy’ngop! (That’s great news!) Erik Basic Air Data Team 3rd August Changed the sensor connectors to PCB, mechanical force at the joint was not good with the former socket.  The new socket is working fine, it’s a SIL through hole straight socket. We have notice of this variant being built and performing fine. 17th July Assembly and test started, so far the sensors measurements are ok. Pictures here. […]
- [Asgard ADC](https://basicairdata.eu/projects/airdatacomputer/asgard-adc/): Main Links Current release on GitHub Getting Started Pictures Breadboard Assembly and Components Fly Test Bootup Configuration File Project Progress Page Free DIY Resources Asgard article on Hackaday Asgard Wikipedia reference Reference Configuration Since it is possible to change some characteristic of the unit selecting different hardware, we propose a reference configuration. The reference configuration will have the following characteristics (complete hardware). This unit can determine True Airspeed, Mach number, Altitude, and common air properties from a pitot-static probe data and an outside air temperature probe. Overall weight: 47 grams Overall dimensions: Without push in fittings 66x41x24 mm; With push-in fittings […]
- [Pitot Assembly Notes](https://basicairdata.eu/projects/pitot-probe/flanged-pitot-probe-and-pitot-cover/pitot-assembly-notes/): You find here some note about the assembly of your 8 mm Pitot-Static. If any doubt arises consider entering in contact other BAD users. Possible configurations are multiple but the Pitot-Static probe is the same. Prior to the assembly, you should have prepared the single components and read your selected variant page. Regarding the flanges there are some tested alternatives, you can view the models online here. Most common flange model is that one. Common files are available to download from our GitHub repo. Unflanged Pitot, it is the basic configuration Let by the Pitot desired length L=220 mm Check the length of […]
- [Short intro to RESTful web services with Android Client](https://basicairdata.eu/projects/support/short-intro-to-restful-web-services-with-android-client/): The proposed fast deployment solution was tested, in February 2017, on a Debian 7 Wheezy server with a dedicated IP and an Android Studio 2.2.3 generated Android client app. Send us feedback to our mailing list. Now and then we are in need for a fast implementation of a CRUD web service, for example, to share data between heterogeneous digital systems. Here we walk through a minimum working solution that can be used on DIY setups and was used in different Basic Air Data experimental projects. In particular, we are willing to share data with an Android device. At the […]
- [Support](https://basicairdata.eu/projects/support/):  
- [Valve Selection and Simulation](https://basicairdata.eu/projects/valve-selection-and-simulation/): (This article is a digression from main requirements specification topic. You find the Pitot Static calibrator requirements reference article here) We were concerned about the performances of the valves that should be employed into the Pitot-Static calibrator. In particular we wanted to evaluate the behavior of a valve during transitions between two different pressures. As performance test we will simulate the valve behavior when it is used to regulate the pressure of a tank. That tank is the idealization of the pneumatic circuit volume from the pressure sensor to the static port. Simulation objective is to support the Pitot-Static calibrator pneumatic […]
- [GPS Logger - Application Notes and Tutorials](https://basicairdata.eu/projects/android/android-gps-logger/application-note-gpslogger/): Main Links In detail GPS Logger usage Application Specific Information Other Links
- [Servo Characteristics, Handling and Spades](https://basicairdata.eu/knowledge-center/background-topics/servo-characteristics-handling-and-spades/): There are many methods to increase the performance of our movable surfaces, we introduce here the spades, we will give also an introductive numeric example. Spades are mechanical devices that can provide a better static and aerodynamic balance of ailerons or elevators movable parts. You can find that kind of device even on small general aviation planes, Figure 1 shows Laser 260 spades. The spades can be seen as a combination of a plain mass balance weight with an aerodynamic surface, they are usually installed with a bracket fixed to a movable surface. It is to be mentioned that a […]
- [Frequently Asked Questions](https://basicairdata.eu/f-a-q/): Contribute User tested 3D printed parts from Shapeways. General Questions What is your next project?The finality of Basic Air Data is to develop and share probes that can be built by the users; any support topic is welcome. If you are interested in this aspect consider to join or to contact us. Are you selling air data systems?No, it’s an open and free project. Why Basic Air Data is open and free?The Basic Air Data online content is based on personal free work contributions. How can I submit feature proposals and require general info?Use the contact information here and thank you! […]
- [Introduction to Weather Balloons](https://basicairdata.eu/knowledge-center/design/introduction-to-weather-balloons/): A convenient way to gather atmospheric data at high altitudes is to use weather balloons (current record altitude for unmanned gas filled balloon seems to be 53 km of BU60-1 Japanese balloon). As this kind of devices is used for weather forecast and research the specific literature on the topic is widely available [1] and consolidated. Air data systems are a common payload across that kind of probe, from here our interest on the topic. Here we introduce the basic hardware, provide a basic calculation script for balloon sizing and describe the ground filling operations. The topics involved are different and […]
- [Downloadable Calculation Scripts](https://basicairdata.eu/projects/calculation-routines/downloadable-calculation-scripts/): Air density calculation Scilab script to calculate air density with high degree of accuracy; Full reference here; The accuracy achievable is really good, full calculation and accuracy information from NIST here. RTD PT1000 Callendar-Van Dusen implementation Scilab script to calculate temperature from platinum RTD resistance value; International Standard Atmosphere /US1962/72 Atmosphere model calulator for altitute <11000 m; Scilab script to calculate air properties in standard atmosphere.
- [Online Calculation](https://basicairdata.eu/projects/calculation-routines/online-calculations/): Calculation that are available on Basic Air Data Web
- [Air Properties Calculator](https://basicairdata.eu/projects/calculation-routines/online-calculations/airproperties/): Apart Github use info @ basicairdata and socials (see footer) for bug report and feature proposal Refer to this article for naming conventions and uncertainty. Given Air temperature, pressure, and relative humidity this code calculate air data properties.
- [Differential Pressure Sensor Range Finder](https://basicairdata.eu/projects/calculation-routines/online-calculations/differential-pressure-sensor-range-finder/): Source code posted on Github. Apart Github use  info @ basicairdata and socials (see footer) for bug report and feature proposal Refer to this article for naming conventions and uncertainty. Given the desired maximum Calibrated Airspeed, CAS,  this servlet calculates the maximum differential pressure at the pressure sensor; that info can be used to size the main differential pressure sensor of an ADC. If the coefficient c is set to 1, with no uncertainty, then calculated desired CAS value is equal to Indicated Airspeed, IAS. The statistical distribution of parameters is assumed to be Gaussian. Confidence level is 99.73%, we considered . Click […]
- [In Flight Angle of Attack Usage](https://basicairdata.eu/knowledge-center/measurement/in-flight-angle-of-attack-usage/): In-flight measurement of the angle of attack is not yet a common application on small flying platforms. Despite that this information is useful for manned and autonomous and flight platforms, augmented stability, control flight systems and failure detection systems. A part post flight telemetry, angle of attack measurement can be correlated with real time flight performance indications. We will investigate here some basic aspects of angle of attack use. Angle of attack, AOA or , is the angle between the relative wind, oncoming air, and a fuselage fixed reference line. Sometimes the reference line is the fuselage center line [1]. Refer […]
- [Pictures Gallery for Amaranth ADC](https://basicairdata.eu/projects/airdatacomputer/amaranth-i2-assembly-tutorial/pictures-gallery-for-amaranth-adc/): ADC Amaranth Tutorial  From the point of view of the assembly, i2 is identical to i1 [Best_Wordpress_Gallery id=”8″]  
- [COTS, Amaranth i2](https://basicairdata.eu/projects/airdatacomputer/amaranth-i2-assembly-tutorial/cots-amaranth-i2/): Components Off the Shelf preparation for ADC Amaranth i2. Prior to proceed through this tutorial, please be sure to have all the components reported here. We need to prepare two components, the Teensy and the Micro SD Adaptor. 1. Solder the breakaway headers to the Micro SD Adaptor We need to solder two rows of 5 breakaway headers. To our COTS SD_Adaptor, you find the pictures of the adaptor here. The top side is the side of the card with the metal card holder. The pins should go down toward the bottom side. 2. Solder the breakaway headers to the Bluetooth board Only […]
- [PCB, Amaranth i2](https://basicairdata.eu/projects/airdatacomputer/amaranth-i2-assembly-tutorial/pcb-amaranth-i2/): Printed Circuit Board procedure for ADC Amaranth i2. Prior to proceed through this tutorial, please be sure to have all the components reported here. It’s supposed that the user is already trained is basic soldering skills. The PCB dimensions are generous compared to the mounted components, no particular care is needed. 1. Solder the four SMD 4.7kOhm resistors Refer to the video tutorial. In short, you should tack one side of the resistor, using the plier, and then you finish the other side without any other help. During this operation, you can lay down the PCB on a small piece of […]
- [Case, Amaranth i2](https://basicairdata.eu/projects/airdatacomputer/amaranth-i2-assembly-tutorial/case-amaranth-i2/): 3D Case assembly procedure for ADC Amaranth i2. Prior to proceed through this tutorial, please be sure to have all the components reported here. The case is an optional component of the ADC. If your application requires minimum weight and dimensions you can just use your ADC PCB wrapped inside a shrinkable plastic tube. The case is basically designed to contain in a practical way you electronics and pneumatic connections; the microcontroller pins are exposed so you can experiment/expand your hardware capabilities with the maximum comfort. On the thick wall of the container, there is a support to all the pneumatic connections. The […]
- [Amaranth i2 Air Data Computer Assembly Tutorial](https://basicairdata.eu/projects/airdatacomputer/amaranth-i2-assembly-tutorial/): Go to this page here for the latest Air Data Computer release Please consider using the latest release of ADC. Amaranth is a closed project. Here you find the link to the ADC Amaranth i2 pictures. Hardware was tested. Basic test firmware was published. To build your own unit go to  the download paragraph. Make at your own risk. Good idea is to check the GitHub repo for new releases. Good news is that the ADC prototype is working. Custom PCB and 3D printed case are completed. The unit is Bluetooth enabled and can be interfaced with an Android device […]
- [Flush Airdata Sensing](https://basicairdata.eu/knowledge-center/measurement/flush-airdata-sensing/): Air data can be acquired by mean of mechanical probes protruding from the airframe. In many cases was also possible to find a placement for the probe that is out of the body modified airfield. Very common is the nose mounted air data boom. In Figure 1 you find one mechanical air data boom tested within a wind tunnel in 1958 (Source: NASA). Mechanical Air Data Booms are able to reach a notable degree of accuracy and are used in some modern applications, you see a miniature mechanical Air Data Boom mounted on the Terrafugia prototype in Figure 2. Apart the […]
- [Basic Air Data IRC Channel Meeting Instructions](https://basicairdata.eu/projects/collaborators-stuff/monthly-meeting-with-basic-air-data/): We are using IRC as a support communication system for our work team. Our channel is #BasicAirData on Freenode. Access to the channel is completely free, follow theses instructions to access. This meeting is the ideal occasion to discuss the material published on the website, making, and programming. Feature proposal and bug report will be also possible. When an appointment is arranged for your team you will receive an email that confirms the time of the IRC session. Please note all the schedules are given in  Coordinated Universal Time.  
- [Meetings](https://basicairdata.eu/projects/collaborators-stuff/)
- [IRC Chat](https://basicairdata.eu/projects/collaborators-stuff/irc-chat/): This is a short note on IRC Chat for the BasicAirData collaborators Without installing any software you can access the Internet Relay Chat clicking this link here. To chat about our project we use the IRC channel #BasicAirData on irc.freenode.net Server: irc.freenode.net port 6667  / irc.freenode.net:6667 Channel: #BasicAirData There are different free clients available for different Operating Systems and for mobile devices. With Windows OS you can use, for example, the free client Xchat. Under Linux/Windows you can use Xchat. Under Mac OS is available Colloquy. Refer to the manual/tutorial of your specific client for a detailed description. Generally you need to […]
- [Elevator Hinge Moment](https://basicairdata.eu/knowledge-center/design/elevator-hinge-moment/): The sizing of the servo motors used to move control surfaces on an RC plane is not a critical issue, but from time to time there is the need to have a fast analytic tool with which to check the correctness of our choices. A common sizing problem description can be seen in Figure 1, where we have the plans for a typical RC plane which provide the geometric characteristics of the wing and the control surfaces, and we need to decide the torque required to move each of the corresponding servos. This is a mid-point in the overall design […]
- [Dew Point](https://basicairdata.eu/knowledge-center/background-topics/dew-point/): Dew is water in the form of droplets, that forms on surfaces due to condensation. Ersa was the mythological Greek goddess of dew, and even if she cannot protect us from it anymore, her inheritance can impact on our basic air data measurements. Dew point is the temperature at which dew forms. Knowledge of the dew point gives us a direct information on air humidity. This information can be useful by itself or when we need to check if dew will form during instrument operation. In particular, we needed to determine if dew can become a problem in a heated […]
- [Bluetooth Wireless Communication](https://basicairdata.eu/projects/android/bluetooth-wireless-communication/): Each electronic sensory device is made to do carry out a specific operation: read a temperature, record the atmospheric pressure, sense an applied force, and so on. Other sensors (usually more complex) are better suited for human interfaces, calculations and/or data storage. But almost all sensors, sooner or later, need to communicate data to other devices. A temperature logger for example needs to pass the daily logged data, rather than the current temperature, to a personal computer. Conversely, the personal computer might need to talk with that sensor in order to request the current temperature, or to specify how often […]
- [Library Use-Case: SD-Enabled Temperature Logger](https://basicairdata.eu/projects/airdatacomputer/library-use-case-sd-enabled-temperature-logger/): In our continuing effort to enable the DIYer to build his own Air Data Computer, we’ve organized some code into a microcontroller-oriented standard library. The code is intended for the Teensy and Arduino boards. To let the user understand how the library can be used, we have prepared some fully working examples ([download id=”2584″] ). This article presents the installation and operation of the library for a Teensy 3.1/3.2 board as a temperature logger. Main functions of the logger This temperature logger is able to: Record temperature readings to a Secure Digital (SD) memory card, as well as forward the measurements […]
- [Pitot Probe](https://basicairdata.eu/projects/pitot-probe/): N10-006 ICBB 1Z0-060 101-400 352-001 350-080 c2010-657 1z0-808 1z0-434 PR000041 70-177 JN0-360 1Z0-051 200-120 MB2-704 70-411 CAS-002 9A0-385 70-270 1Z0-803 2V0-621D EX200 CISM 70-480 OG0-091 1Y0-201 100-105  , N10-006 MB2-707  , CISM  , PEGACPBA71V1 M70-101 2V0-620  , 70-246 300-206  , 1Z0-061  , 500-260  , 100-105  , 70-270  , 70-463 350-029 500-260 210-260  , 9A0-385 EX300 9A0-385  , 350-018 350-050 810-403 220-802 000-105 210-065 PEGACPBA71V1  , MB6-703  , OG0-093 MB2-707 9L0-066
- [Android](https://basicairdata.eu/projects/android/)
- [Copyright](https://basicairdata.eu/copyright/): If you intend to use some website and blog contents just give credit. The editorial contents of this website are provided under an open paradigm,Use the contents freely as per creative commons terms. If not otherwise specified all the different forms of software or scripts are provided free of charge under the GNU GPL terms. Contact Basic Air Data Disclaimer This project is for entertainment purposes only and is not meant to teach you how to build anything. The authors are not responsible for any accident, injury, or loss that occurs as a result of reading this website. Read this […]
- [Boundary Layer](https://basicairdata.eu/knowledge-center/background-topics/boundary-layer/): The interaction of air with a body generates a space region where the air conditions are different from the freestream conditions. That region is named boundary layer. In basic air data applications we’re dealing with the need to make accurate freestream conditions measurements, so we’re really concerned about boundary layers. Boundary layers have been studied since the very beginning of aerodynamics. In 1904 a twenty-nine years old Ludwig Prandtl lay down the grounds for modern aerodynamics with a short boundary layer presentation in Heidelberg[1]. So let’s visualize a boundary layer over a flat plate, refer to figure 2. We have […]
- [Removable Pitot Flange](https://basicairdata.eu/projects/pitot-probe/removable-pitot-flange-and-cover/removable-pitot-flange/): Introduction, Print and Assembly of the BasicAirData Removable Front Flange GitHub Repository here   Some users presented the need to have a demountable pitot unit. The main advantage over the monolithic layout is the possibility to disassemble the pitot probe for maintenance and calibration. Main drawbacks are an increased complexity, weight and part count. The more stringent requirement remains the low cost and DIY compatibility of the parts.   After many “try and fix” iterations we came out with the design reported in figure 1. STL files for 3D print here. Sealing is achieved by two o-rings, mechanical joint between the […]
- [Compensation](https://basicairdata.eu/knowledge-center/compensation/)
- [Calibration](https://basicairdata.eu/knowledge-center/calibration/)

## Optional

- [Agent (MCP protocol)](websites-agents.hostinger.com/basicairdata.eu/mcp)

[comment]: # (Generated by Hostinger Tools Plugin)