This graph shows how much better the Osprey's tiltrotor design is compared to the Fairey Rotodyne's compound design: http://www.defense-aerospace.com/dae/artic

This graph shows how much better the Osprey's tiltrotor design is compared to the Fairey Rotodyne's compound design: http://www.defense-aerospace.com/dae/articles/communiques/AW609envelope.gif http://www.defense-aerospace.com/dae/articles/communiques/AW...