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US 6,672,835 B1Granted
Method and apparatus for self-contained variable pitch and/or constant speed propeller including provisions for feathering and reverse pitch operation
OwnerArthur C. Hughesinventor
Life of this patent
Estimating the term…
Abstract
A self-contained variable pitch and/or constant speed propeller including provisions for feathering and reverse pitch operation, wherein no direct contact is required between the fixed engine or airframe and the rotating propeller for effectuation of blade pitch change, therefore eliminating the burdens and complexities general associated with propeller installation, maintenance and blade pitch change operations.
Claims63
A propeller blade pitch control apparatus for variable pitch operation, said apparatus comprising:
- means for supplying power for changing blade pitch angle;
- means for selecting blade pitch angle;
- means for computing selected blade pitch angle based upon a determination of the position of a second sensor relative to a first sensor;
- and,
- means for changing the blade pitch to obtain said selected blade pitch angle.
2 more elements
A propeller blade pitch control apparatus for constant speed operation, said apparatus comprising:
- means for supplying power for changing blade pitch angle;
- means for selecting propeller angular velocity;
- means for computing selected propeller angular velocity based upon a determination of the position of a second sensor relative to a first sensor;
- and,
- means for changing the blade pitch to obtain said selected propeller angular velocity.
2 more elements
Dependencies are inferred from the claim text.