PSS Airbus and FSUIPC

[JohnKCMO]

Pete:

PSS' new Airbus 330/330 becomes very unstable in FS9 when using sim rates of 2x or more. Is it possible that FSUIPC may be causing this problem?

If FSUIPC has nothing to do with this problem, do you think you can maybe had something in the technical tab to force planes to become stable at 2x or more sim rates?

[Pete Dowson]

PSS' new Airbus 330/330 becomes very unstable in FS9 when using sim rates of 2x or more. Is it possible that FSUIPC may be causing this problem?

No. Why should it be? FSUIPC is not doing anything at all most all of the time, and when it does do anything is is sync'd to frame rates. You don't get better frame rates when you increase the sim rate.

If FSUIPC has nothing to do with this problem, do you think you can maybe had something in the technical tab to force planes to become stable at 2x or more sim rates?

How? What do you think is causing the instability?

If you mean its autopilot can't control things so well at higher sim rates, then if it is a well designed well programmed autopilot I am not at all surprised. Autopilot coding will be based on feedback control, a process of reading values, determining the correction needed, then applying it. All this is probably calculated in real time, as it would be in a real aircraft. By speeding things up the feedback is probably insufficient -- the changes are happening twice as fast as so the corrections must be twice as "good".

The only reason it probably doesn't affect the FS A/P so much is that it calculations aren't so sophisticated.

I think all FSUIPC could do to stop this under-control would be to stop you changing the sim rate. Sorry.

Maybe you could ask the PSS programmers to provide several autopilots, one for each increased sim rate you want to use? I can imagine their response though. I think their aim is to provide more realism, and this is really your problem. I would think that real aircraft would be unstable if real time went twice as fast too.

Regards

Pete