Andy Ross writes: > Curtis L. Olson wrote: > > Jon S Berndt writes: > > > Curtis L. Olson wrote: > > > > I originally did a *very* simplistic model of wheel spin down. This > > > > was for the purpose of audio effect only and had nothing to do with > > > > modeling actual ground behavior. > > > > > > Do you want this? I had intended to do wheel spinup and > > > the effects on the aircraft, but decided nobody cared. > > > > Well we need *something* to make the audio behave right. > > Putting on my lazy FDM author hat... > > Is it really worthwhile to force the FDMs to model wheel spin? This > is going to be really hard to do with any degree of accuracy. The > existing duel-coefficient friction models break down badly at very > high slip speeds when the tires are literally melting. And we'd have > to have a moment of inertia for every wheel; I wouldn't even begin to > know where to look this up. And brake handling would have to be > modified to work in torque space, instead of the simple interpolation > of friction coefficient that happens now. > > Why not just put a simple hysteresis threshold in the audio code > instead? If wheel N has already been on the ground within the past M > seconds, then don't play the sound. To my mind, this gets 95% of the > effect for 20% of the effort.
Right, that's what I had originally implimented and what I am proposing we recover and put back into the code. Regards, Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
