Guys: Is it possible that a high drag coefficient could be a momentary phenomenon, from a steep descent used to spin up the main rotor, to increase its rotational inertia and kinetic energy, for a final flare during landing? 
Guys: Is it possible that a high drag coefficient could be a momentary phenomenon, from a steep descent used to spin up the main rotor, to increase its rotational inertia and kinetic energy, for a final flare during landing?