well, its time dependent.
its not impossible.
helecotors kind of move like harriers without moveable nossles.. actually I think i might do a helecotorised test version.
Im really very unsure on how rotor torque behaviour works..
..in the flight sim show near birmingham uk the other day I had ago of the helecotor sim - and got accused of treating it like an arcade :-)
that is to say - the behaviour is more complex than what I realised. but I think I basically grasp why it does the weird things it does.