by Octal450 » Thu Apr 18, 2019 5:08 pm
Flight control laws done for Roll and Yaw. They aren't perfect, or have all features because YAsim... but they should be somewhat convincing.
It has the bank angle "protection", wheel forces applied after 35 bank. It can be overridden if you turn hard enough. If you let go, it will bounce back to around 30 degrees.
Outer ailerons lock at high speed, I tried to get it close to real life. I couldn't lock spoilers 5 and 10, because the 777 doesn't model the hydraulics currently, and the spoilers are together in the 3D. If someone wants to fix all that, I'll add that logic.
Yaw Damper/Turn Coordinator simulated. Because property rule doesn't have a good washout (there is a high pass, but it isn't right for this purpose), I tuned the turn coordinator to also act as a yaw damper. It works decently even in bad weather.
Rudder Ratio is simulated, including the 2 set ratios when PFCs are switched off.
Also
Just like in my IDG Airbus and MD-11, if you turn yoke while A/P is on, he will switch off. If you turn off PFCs, A/P turns off as well.
PFD sideslip no longer uses the generic instrument, but my calculations derived from FCOM.
If a JSB version ever is done properly, most of my code can be reused, which is good.
It is on my github 777 page shortly. I will work on the C*U pitch law next. I think I found a workaround for YAsim not allowing me to change the trim property and still keep trim ref speed somewhat correct.
When its all done, I'll need testing before I put it in FGAddon. Pavlin has agreed to do long hauls to test system stability.
It appears that the -200s have weird trim behavior, needing much to much nose down trim at all times. YAsim is weird, so I will set a trim bias for the 200s only, as the 300s trim is less weird. Maybe something to do with the hstab being more aft on the -300, and how YAsim calculates pitch moments.
Kind Regards,
Josh