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I've searched for an answer/suggestion around the forums without success and am hoping for help here. The general "forum" opinion is that in flight simulation, rotay wing modelling has always fallen far short of fixed wing. I fly a Cabri G2 in real life. I find the MP Design Studio version for P3D works very well indeed and compares to the real thing nicely, except for autorotations. We all know what they're about. The engine fails, lift can't counter gravity, nose drops, main rotor slows down when collective pitch is increased, etc. Real recovery needs quick pull-back on the cyclic followed by immediate full-down collective then careful main rotor RPM control with collective and a final flare to reduce the forward speed and collective up to slow verical speed to zero. This process can be started OK in the sim by pulling back on the cyclic and flooring the collective. But the engine has not failed, as it would have done in reality. So I would need to cut engine power completely to simulate the cause of an autorotation. How? And to reduce main rotor RPM during the rapid descent I would need to increase collective pitch, but if I did this with the engine still running and the governor engaged, I would get an increase in lift! So the autorotation process has failed in the sim. And so it goes on. The consencus amongst flight simmers is that sims don't model autorotation. I think that's true because the flight dynamics involved aren't what's needed in normal flying. I also think that there's scope for getting P3D and my Cabri G2 to behave as expected during an autorotation by changing settings that relate to governor, collective pitch, independent throttle control and possibly others. I've never believed in reinventing the wheel so at this stage I'm wondering if anyone out there has already studied this, especially with P3D and the Cabri G2. I'd be delighted with any ideas that can be offered. I intend to persuade my setup to produce realistic conditions that lead to autorotation and respond realistically to the right sequence of corrective actions. I'm sure I could do this much quicker with your help than on my own by trial and error. All the best, Brian
