CLEARANCE: Above Top Secret
- Jun 3, 2011
- Reaction score
_Del_ said:Sundog said:
Their configuration needs at least one prop turning for anti-torque. Even if you shut it down on the ground, it would require time to spin down. And it would require time to get both rotors and propulsors back up to speed.
Sikorski's fan is on a clutch, and they can disengage it in flight in descent. Just as importantly, it also isn't sitting right outside the cabin.