Hi,
I'm currently programming a "standalone" addon for FS9. This time it's a SAAB340. The SAAB does not have an autothrottle so I need to find a way to make the autopilot pitch for airspeed in IAS-mode.
Does anyone have any leads for me? :)
I guess one alternative is to control the elevator trim from the addon, but I'm not that good at physics. I can't figure out the correct formulas to maintain a selected IAS and at the same time prevent a phugoid. I guess I have to take things like trim position, angular acceleration, vertical acceleration, delta-IAS etc. into consideration?
Please help! This is one of the last things to complete on my SAAB...
Fly safe!!