Quick question, was talking to a retired engineer last week who told me about a helicopter with tip driven rotors the Rotordyne, he remebered it was noisey as **** and not that successful.
My question is though why did manufacturers drop this type of research, do you think with modern technology the noise could be reduced and the idea proved successful, did a search but found little on the Rotordyne only bits of it left at Weston, any ideas????
