USMCmech
Well-Known Member
Hmm - interesting. I've never heard settling with power being more difficult to recover from from helo to helo based on size, but there is a different recovery procedure between tandem and single rotors. Essentially in a single forward cyclic gets you flying again, and in a conventional tandem (47, 46) lateral cyclic does it. I'd guess with the 22 forward would be the way to go.
*Disclaimer that the best recovery is prevention.
The crew chief on that mishap had been my roommate for a few months before he transferred over to Pax River, so I followed the investigation very closely.
The pilot in that mishap was a C-130 pilot who had cross-trained into helos to help develop guidelines and tactics for using the V-22 at high altitude and long range flight (something that most helo pilots don't do very much of), so he was not nearly as experienced helo pilot as his rank and flight time would suggest (not to say that he was not a good pilot, but he was fairly new to helicopters).
On approach to the airport, the pilots became distracted and did not begin their descent early enough. He tried to compensate by increasing his rate of descent rather than going around for another approach. During his descent a conventional helo would have been in VRS, but later flight tests would show that the V-22 is actually very forgiving when it comes to settling with power. However he also added some rudder at the last minute (possibly to bleed off some airspeed) which caused the left (I think) rotor to enter VRS while the right was not. This effectively caused the aircraft to do a Vmc roll at low altitude. This was obviously unrecoverable and resulted in a nose first crash killing all aboard.