Wait till it is tracked and see what it really sounds like.
I thought most of that noise was tail rotor myself. The main rotor blades are fairly quiet until an increased g turn and let-down.
I know a 520N overflight at 200 feet at low power is extremly quiet with the metal blades.
I will be interesting to see when they announce forward flight testing.
Last edited by mfriskel; 12th April 2011 at 23:58.