Thrust-Dependent Variable Blade Pitch Propeller
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United States of America Patent
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Jun 9, 2017
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Jun 10, 2016
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Abstract
An offset blade of a propeller varies the blade pitch according to in-flight conditions in order to maximize the performance and efficiency of the propeller. As the propeller begins to rotate, upward thrust forces and lateral centrifugal forces are generated on the blade. The balance between the thrust and centrifugal forces determines the blade pitch. At rest, the blade pitch is minimized whereas when in-flight, the blade pitch of the propeller blade is maximized. The blade is coupled with a rotor hub through a connector that determines the maximum and minimum blade pitches of the blade. Furthermore, the connector reduces blade pitch oscillations that often occur in flight.
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