.par files and realistic physics

.par files and realistic physics

Postby Astrocreep » Mon Jun 05, 2006 8:50 pm

Hello all. Just a question regarding the way in which FMS models physics. Is it possible to recreate accurate slope soaring with FMS? I know that if I add wind in the right direction to the right landscape, lift appears to be generated, but it feels all wrong somehow. Also, FMS models appear to have some difficulty in replicating accurate soaring flight, I am not sure what is wrong, but something "feels" unrealistic, and does so in every RC sim I have tried. I think FMS is a brilliant platform, don't get me wrong, and I am determined to 'crack the nut' so to speak, but as I am not a programming expert, I do not know how the way in which FMS models physics affects it's ability to replicate accurate flight.

Can anyone shed any light on this issue?

I did spend some time tweaking a .par file for a phase 6, which I notice some people enjoyed (looking through the forum pages!) but some felt was not right in the way it was put together. My excuse is that whenever I have tried to design a .par file, I have tweaked it in order to obtain the most accurate flight profile and characteristics, not to replicate the exact physical attributes of the real model. FMS does not model physical parameters exactly, nor does it claim to, so until someone develops the sim to a point in which every physical attribute can be modelled with absolute accuracy, I think the best we can do is to do whatever we need to to the .par file to get the best result. Someone noted that the Phase6 .par file was nose heavy. Which it was, but this was in order to try to get the most accurate slope soaring flight from the model, as when flying in the simulated wind of FMS, down trim is required and at the time, I did not have a trimmable controller, only a non-trimmable joystick.

Anywho, if anyone has any pearls of wisdom regarding accurate soaring flight on FMS, in particular, slope soaring, please let me know.

Oh, an a Precedent Fun Fly would be rather nice as my real example is now defunct :cry:

Cheers folks

Matt
Astrocreep
 
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