Oxsergy

That's not entirely true. If theres a situation in which you need to have lots of very small and repetitive calculations done(lets say a few thousand per second) the GPU would actually process these faster than a CPU due to the GPU having many, many more cores than your CPU.

It's not even that. Having an unoptimized simulator limits how much can be done with it. If it more efficiently used your CPU cores that would allow larger simulations with more AI, yes? This in turn would open more possibilities for missions, worlds and the like.

This everyone agrees on but however the problem that we have is that it doesn't utilize your CPU properly. When I play it never goes above 25% usage of all my CPU cores combined(i7-3740QM). I haven't checked whether it's only running on two cores or whether each core gets only a small percentage of the calculations but either way it is not utilizing all the CPU power it can. When my framerate is being limited by the CPU my GPU usage drops to less than 40% and my framerate usually sits at 20-30 depending on the situation. When I'm in a fairly low AI calculation mission I can get a consistent 60 FPS which is more than satisfactory but missions like the helicopter scenario kill my framerate due to the map full of AI and poor CPU optimization. Just my $0.02.

No, they're not. Yes they control the thrust by altering the collective and even make it negative in very specialized helicopters, but only slightly. However you need to take into account blade bending. When sitting spooled down a helis blades will be sitting a good amount lower than they sit at idle RPM because of their weight, etc. This also means the blades have a certain amount of flexibility to them. Under idle RPM the blades will be roughly sitting level(90 degrees) due to centrifugal force and upon application of collective(thrust) they'll bend upwards quite a bit. If they attempted to perform inverted flight they would simply cut their own tail boom off. Also, they're a lot more fragile than you assume. Even severe application of cyclic would be enough to damage something in either the main rotor system or the hydraulic actuators that control the collective. This is some information from an apprentice AME, as much as that's worth.