> -----Original Message-----
> From: leee [mailto:[email protected]]
> >
> > Did you try scheduling your autoplilot“s height-error to pitch
> > demand gain with 1/V (speed inverse) ?
> >
> > Alan
> 
> Re-read the end of the paragraph after the one you quoted above ;-)
> 
> LeeE


Red Face (me that is)

I can't help thinking that there must be another problem somewhere. It
should only be necessary to up the frame rate above 20Hz if you need to
simulate vibrations, not aircraft motion and autopilot control loops. 

A possible cause is if the simulation is not ordered correctly and some
equations in the solution are receiving old inputs which relate to a
previous time frame. Errors due to this effect would reduce as the frame
rate is increased.

Anything in the simulation which has a faster response that that provided by
a 20Hz frame rate can safely be ignored for man-in-the-loop stuff as the man
just won't be capable of seeing or reacting to it.

Alan


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