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What is the flap frequency of a gimballed rotor?(a) 1/rev(b) 2/rev(c) 0.5/rev(d) 10/revThe question was asked in unit test.My enquiry is from Blades and Propellers topic in portion Helicopter Dynamics of Aerodynamics |
Answer» CORRECT choice is (a) 1/rev Explanation: Gimbaled rotor is a multi-blade HELICOPTER rotor UNLIKE teetering rotor which has only two blades. It is characterized by flap hinge which lies at exactly the ROTATIONAL center which yields a flap frequency of 1/rev. |
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