[Jsbsim-devel] Airspeed hold autopilot and flying a glide slope

[Aaron S. <air...@gm...>]

Hi,

I want to implement an airspeed hold autopilot. The autopilot needs to=20
calculate the airspeed error first. But I don't know which property (i.e.,=
=20
true airspeed) should be used to calculate the airspeed error=20
(=3Dairspeed_setpoint - true_airspeed). Could someone tell me?

A related question is: Should the output of the "airspeed hold autopilot" b=
e=20
ap/elevator_cmd or fcs/throttle-cmd-norm?

A third question is: How to make the aircraft fly a glide slope either=20
through a script or an autopilot?

Thanks a lot!