The Shop > Electronics & IC Programing
Electronic stabilization systems. aircraft el al! Link Trainer.
John Hill:
Well I had a bit of a think and realize I am looking for the wrong thing! :scratch:
On reflection, I do not need to know where the 'craft is, I just need to know where it should be! :coffee:
Revised plan: 'Pilot' manipulates controls and this is interpreted by Flight Simulator software in the conventional way which updates the instrument panel and sends position/attitude data to my processor which will move the 'craft as required.
Is that not a better plan? Of course I now need to find out how to get data from the flight sim software. :scratch:
vtsteam:
--- Quote from: John Hill on May 13, 2022, 07:31:55 PM ---Is that not a better plan? Of course I now need to find out how to get data from the flight sim software. :scratch:
--- End quote ---
Yes!
Ya know, I was thinking that after the first post but got kind of confused by the gyro talk. But yes.
vtsteam:
I would start with FlightGear --it's open source and free. Contact user base/fora and ask questions.
vtsteam:
--- Quote from: John Hill on May 13, 2022, 07:31:55 PM ---Well I had a bit of a think and realize I am looking for the wrong thing! :scratch:
On reflection, I do not need to know where the 'craft is, I just need to know where it should be! :coffee:
Revised plan: 'Pilot' manipulates controls and this is interpreted by Flight Simulator software in the conventional way which updates the instrument panel and sends position/attitude data to my processor which will move the 'craft as required.
Is that not a better plan? Of course I now need to find out how to get data from the flight sim software. :scratch:
--- End quote ---
Well the simplest scenario is you use the guts of a 2 pot commercial joystick for the stick (elevator and aileron) and rig another potentiometer for the pedals (rudder) which the flight sim interprets, but also your movement computer interprets the same potentiometers through an onboard A/D converter. Then the flight sim doesn't have to communicate anything. Your computer senses stick position. (well pots are old school, you could substitute encoders, I'm sure with modern simulators. But pots are simple and easy, and widely available as gimbaled joysticks)
There are also available joysticks that can give sensory feedback from a flight simulator: https://wiki.flightgear.org/Force_feedback .Not sure what other developments there are these days.
Honestly, the feel and timing will never be totally realistic because you can't simulate G forces in turns, etc. For instance, coordinated turns in real life are neutral compared to slip and skid, and they feel different in the seat of the pants. Which is where the expression flying by the seat of your pants comes from. Same thing for acceleration when increasing throttle, or the feel of a dive, etc.
Also the effects of positive, neutral, and negative stability will vary from current stick position. If you model a plane with lots of positive stability, its simulated attitude will most closely align with stick position in timing. You could program into your movement computer a delay after stick movement to align better. If you only modeled one plane, I bet you could get it pretty accurate with tweaking the computer movement response.
vtsteam:
Gold mine:
https://app.aircorpslibrary.com/aircraft/link-trainer
An instructor's manual might actually tell you what the computer response should be to stick movements. I'm guessing the instructor was the computer and controlled the movements?.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version