Re: torque and force computation

[email protected] (Gerhard Wesp)
Newsgroups gmane.games.flightgear.flightmodel
Message-ID <[email protected]>
> I need to compute forces (torques) on commands (aileron, rudder, elevator) to
> appy them on the yoke and the rudder pedal. Does anybody has an idea on how to
> procede ?

The usual first-order approach is

  F = Cs * ( p - p0 ) + Cd * v

where F is the force (or torque, if you want), p is the current control
position, p0 the current trim position, v is the control velocity
(=dp/dt).  The spring constant Cs can be assumed to be proportional to
dynamic pressure in a first approximation.  Choose Cd constant so that
the system feels OK and doesn't oscillate.

Good luck, and let me know if you have any further questions!

Cheers
-Gerhard
-- 
Gerhard Wesp             o o           Tel.: +41 (0) 43 5347636
Bachtobelstrasse 56       |       http://www.cosy.sbg.ac.at/~gwesp/
CH-8045 Zuerich          \_/       See homepage for email address!

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