Rotorway Exec Flight Theory Question
I know this is a 'professional' forum and the Exec can hardly be described as a 'professionals' helicopter, but I've got a question I haven't been able to get answered successfully yet. Can anyone help?
In all the helicopters I've ever flown (10+ types and 5000+ hrs) I've never found one that behaves like a Rotorway when either Throttle or Collective pitch are reduced rapidly in the cruise. In my experience, when the lever is lowered to enter autorotation, or the throttle chopped, 'conventional' helicopters pitch nose-down (due to V squared and phase lag). However, the Rotorway pitches nose-up, and sometimes quite harshly. Anyone out there able to explain why?