MOSTAFA.....If it isn't a helicopter what is it?.....
It is a tiltrotor. Period. It is not a helicopter. For decades folks have been trying to point this out, and some still insist on thinking only in helicopter or fixed wing terms. Note the author of the linked article uses the aircraft term- highlighting the needs to view the V-22 differently that a strict helicopter.
The main customer, the U.S. Marines wanted an aircraft to transform vertical envelopment- bringing a vast improvement in speed and range as part of updated doctrine. Not the beach assault or flying into a hot LZ of decades past.
As a tiltrotor it can do a bit of both helicopter and fixed wing flying. Critics call it a lousy helicopter or a lousy fixed wing turbo prop. Proponents highlight that it can do a bit of both. It can hover, it can maneuver low and slow. Perhaps not as nimble as the best helicopter- but is that an absolute requirement?
Is it the best aircraft to be in with a slow speed double flame out auto-rotation? Of course not. Is it an aircraft that can maneuver you around the enemy? Perhaps.
Yes it is a heavily compromised design, and has had a host of problems, but it requires a bit of different thinking.