Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jay W. Carter, Jr.0
Jeffrey R. Lewis0
Date of Patent
November 11, 2008
0Patent Application Number
112800640
Date Filed
November 16, 2005
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method of operating a rotor aircraft involves measuring an airspeed of the aircraft and a rotational speed of the rotor. A controller determines a Mu of the rotor based on the airspeed of the aircraft and the rotational speed of the rotor. The controller varies the collective pitch of the rotor blades in relationship to the Mu, from an inertia powered jump takeoff, through high speed high advance ratio flight, through a low speed landing approach, to a zero or short roll flare landing. In addition as the rotor is unloaded and the rotor slows down, the controller maintains a minimum rotor RPM with the use of a tilting mast.
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