Martin Spott wrote: > "Correu PelDavid" wrote: > >> Isn't the FDM much good? >> I thought it would be. What fidelity lacks? > > I find the helicopter FDM quite reasonable. I've been flying a model > helicopter about the time when I finished school .... but this is > already 20 years ago, so my memory might play tricks with me. Still the > BO-105 behaves very much as how I'd expect it from knowledge of the > aerodynamical effects. > > In my opinion the biggest drawback is the lack of appropriate > helicopter controls. A joystick and pedals for 200 Euro each will never > replace a real stick, collective and pedals. Successfull helicopter > flight is achieved by small and highly precise movement of all the > controls you have in such a beast - and I've personally never met > simulator controls that really meet the requirements. > > Cheers, > Martin.
Though I have never flown a helo, I have a friend who has and I agree with you on the lack of good controls. Also, don't get me wrong, I think that YASim is a good helo sim, though not as good as X-Plane in many respects. I also feel, however, that there are some important things missing from the FDM. 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) There's no coupling at all between blade energy and vertical acceleration and speed. You can't affect rotor or engine RPM with the collective at all. Try autorotating some time. Other less important missing features include: effect of rotor wash on other rotors and wings export of data regarding rotor disc coning and orientation (for animations) support for multiple engines support for engine throttles (PCLs, FADECs or manual throttles) Josh _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
