Martin Spott wrote: > Josh Babcock wrote: > >> For instance: translational lift, ground effect, retreating blade stall, >> and VRS. I don't think that there is any kind of realism regarding the >> energy model for the blades. (AFAIK, all they do is spool up to the >> specified rpm when the engines are turned on and then back down again >> when they turn off) > > This is what nowadays is done even on many model helicopters: They > spool up the whole thing, activate the governor, which typically part > of a FADEC in large helicopters, and have the rotor running at fixed > speed for the whole trip.
Assuming that you stay withing the helicopter's capabilities. Go outside though, and the engines max out and RPM starts to drop. (assuming that the torque limit is higher than the max engine output). And someday I want to model a helo without a governor. They did exist, I have enough control axis' to do it, and I don't think it's ever been done. I'd even write some Nasal code to run the throttle in a sloppy human-ish way for people who don't have the extra control axis :) > Regarding retreating blade stall, at least there's an effect that comes > close when you cruise at high speed. I _do_ agree that the BO is able > to reach much higher speed than I'd expect from the real helicopter .... Personally, I have never noticed this, even though I have had the bo up to several hundred kts. I'll take your word for it but it is definitely broken, if not missing. > > I don't claim the helicopter FDM in FlightGear is perfect, but turning > it down just because a few details are missing, whereas most of the > actual in-flight behaviour is pretty well done, is unjustified, > I'm not turning it down, in fact I designing a new helo for FG right now. (ch53e, anyone want to help with the FDM?) All I said was that it's not the best out there, and I stand by that. I just want to try and get some attention in this area. I'm really not a programmer, all I can do is cheer and make models. http://jrbabcock.home.comcast.net/flightgear/ch53e/progress/progress.html Josh _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
