C6

Question 1

With forward speed increase how will the reverse flow area change and how will it influence the rotor aerodynamics ?

Answer 1

Reverse flow area will increase with forward speed and reduce rotor thrust and increase rotor drag

Question 2

How will the flapping offset provide additional control moments and how will it influence the pitching and rolling damping ?

Answer 2

Flapping offset gives a moment to let the rotor thrust contribute to control moment (hub moment) The flapping offset can make the rotor provide additional pitching and rolling damping