Hi folks,
I would like to introduce you to a project I've been working on for a while, which I call Airball. It is a new visualization of AoA, IAS and sideslip angle, per the attached images.
I have implemented this as an Android app, and have flight tested it using RS-232 data from the Dynon D10A on my friend's RV-9A, N42PE.
The basic concept is an argument that, for light-sport aviation and similar pursuits, at least during certain phases of flight, the air data is the single most important thing. The Airball display shows the entire relative wind velocity vector as one integrated "digital yaw string".
To get an adequate approximation of sideslip angle, one need merely scale the ball signal (lateral acceleration) by the dynamic pressure. This recovers the sensitivity at low IAS that an actual yaw string provides.
The AoA display is annotated with symbology for alpha-X, alpha-Y and alpha-Ref, to aid with precision flight.
I really hope Dynon can incorporate this idea, or some derivative of it, into your PFD. I think it would greatly enhance flight training and students' ability to visualize how they "fly the wing", and I really hope a display like this can reduce the number of stall/spin accidents we unfortunately continue to see.
I'd be happy to work with you folks to get the Android demos running for you. The code is Open Source; see the links below.
* * * * *
I made a simulator using X-Plane sending data via USB to an Android tablet. A video showing a flight with my CFI friend is here:
https://www.youtube.com/watch?v=vfteJ_cBS_c
A broad position paper about the project is here:
https://docs.google.com/document/d/1TgfueL_csb6bconAkRc8gFmgz8TmQnCOXFLRcVgBZQ4/edit?usp=sharing
This is a high level description of the idea for flight students or a lay audience:
http://goo.gl/wUY9AM
You can download the Android app here. The app allows you to play with the display using just the accelerometer on the phone or tablet, so you can get an idea of how it looks:
https://play.google.com/store/apps/details?id=org.schmivits.airball.phone
Instructions for running the Android app, including how to connect it to X-Plane, are here:
http://goo.gl/trHTH0
The Github repo for my code is here:
https://github.com/ihab/airball-for-android
Kind regards,
Ihab Awad
Palo Alto, CA
I would like to introduce you to a project I've been working on for a while, which I call Airball. It is a new visualization of AoA, IAS and sideslip angle, per the attached images.
I have implemented this as an Android app, and have flight tested it using RS-232 data from the Dynon D10A on my friend's RV-9A, N42PE.
The basic concept is an argument that, for light-sport aviation and similar pursuits, at least during certain phases of flight, the air data is the single most important thing. The Airball display shows the entire relative wind velocity vector as one integrated "digital yaw string".
To get an adequate approximation of sideslip angle, one need merely scale the ball signal (lateral acceleration) by the dynamic pressure. This recovers the sensitivity at low IAS that an actual yaw string provides.
The AoA display is annotated with symbology for alpha-X, alpha-Y and alpha-Ref, to aid with precision flight.
I really hope Dynon can incorporate this idea, or some derivative of it, into your PFD. I think it would greatly enhance flight training and students' ability to visualize how they "fly the wing", and I really hope a display like this can reduce the number of stall/spin accidents we unfortunately continue to see.
I'd be happy to work with you folks to get the Android demos running for you. The code is Open Source; see the links below.
* * * * *
I made a simulator using X-Plane sending data via USB to an Android tablet. A video showing a flight with my CFI friend is here:
https://www.youtube.com/watch?v=vfteJ_cBS_c
A broad position paper about the project is here:
https://docs.google.com/document/d/1TgfueL_csb6bconAkRc8gFmgz8TmQnCOXFLRcVgBZQ4/edit?usp=sharing
This is a high level description of the idea for flight students or a lay audience:
http://goo.gl/wUY9AM
You can download the Android app here. The app allows you to play with the display using just the accelerometer on the phone or tablet, so you can get an idea of how it looks:
https://play.google.com/store/apps/details?id=org.schmivits.airball.phone
Instructions for running the Android app, including how to connect it to X-Plane, are here:
http://goo.gl/trHTH0
The Github repo for my code is here:
https://github.com/ihab/airball-for-android
Kind regards,
Ihab Awad
Palo Alto, CA
