Re: A340-200. A340-313X, A340-600HGW and A340-600VIP
Posted: Tue Nov 01, 2016 3:39 am
I started my Fly By Wire System. The first realistic Airbus FBW for FlightGear. (as far as I know). Work in Progress.
Aircraft is flown by the pid-controllers, but the joystick commands them. For testing, I have basically simulated 4 laws and 3 modes:
NORMAL law: roll and pitch sent to pid-controllers, then to surfaces. 30 degrees maximum bank, unlesss sidestick input is past halfway, then it's 65 degrees. Pitch minimum is -15 degrees, maximum 30 degrees. Autotrim functional.
ALTERNATE law: roll and pitch sent to pid-controllers, then to surfaces. No bank or pitch protection. Autotrim functional.
DIRECT law: roll and pitch go right so surfaces right away! No bank or pitch protection. Autotrim disabled.
BACKUP law: roll and pitch from sidestick disabled, use rudder for lateral, pitch trim for vertical. No bank or pitch protection. Autotrim disabled. Ailerons and Elevators neutral.
Modes:
FBW mode: follows FBW laws from above
AP mode: uses DIRECT law, damping/limits done by IT-AUTOFLIGHT System. Joystick disabled.
FLARE mode: Active 50ft from ground: Pitch in DIRECT law, Roll in NORMAL law, Autotrim disabled.
I will further simulate it at a later point in time, when FBW flies stable. You can switch modes via the A340-600VIP menu.
Only the A340-600VIP workshop has it right now, because it is unstable! It needs testing, and ALOT of testing, and more fixes. If you could try, I would appreciate!
NOTE that it is UNSTABLE! It works -- well enough to fly.
https://github.com/it0uchpods/A340-600VIP/
Josh
Aircraft is flown by the pid-controllers, but the joystick commands them. For testing, I have basically simulated 4 laws and 3 modes:
NORMAL law: roll and pitch sent to pid-controllers, then to surfaces. 30 degrees maximum bank, unlesss sidestick input is past halfway, then it's 65 degrees. Pitch minimum is -15 degrees, maximum 30 degrees. Autotrim functional.
ALTERNATE law: roll and pitch sent to pid-controllers, then to surfaces. No bank or pitch protection. Autotrim functional.
DIRECT law: roll and pitch go right so surfaces right away! No bank or pitch protection. Autotrim disabled.
BACKUP law: roll and pitch from sidestick disabled, use rudder for lateral, pitch trim for vertical. No bank or pitch protection. Autotrim disabled. Ailerons and Elevators neutral.
Modes:
FBW mode: follows FBW laws from above
AP mode: uses DIRECT law, damping/limits done by IT-AUTOFLIGHT System. Joystick disabled.
FLARE mode: Active 50ft from ground: Pitch in DIRECT law, Roll in NORMAL law, Autotrim disabled.
I will further simulate it at a later point in time, when FBW flies stable. You can switch modes via the A340-600VIP menu.
Only the A340-600VIP workshop has it right now, because it is unstable! It needs testing, and ALOT of testing, and more fixes. If you could try, I would appreciate!
NOTE that it is UNSTABLE! It works -- well enough to fly.
https://github.com/it0uchpods/A340-600VIP/
Josh