Fluid reaction surfaces (i.e. – impellers) – Interrelated controls for impeller and drive means – Pitch adjustment related to drive brake or clutch operation
Patent
1990-07-23
1992-12-29
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Interrelated controls for impeller and drive means
Pitch adjustment related to drive brake or clutch operation
416129, 416160, 416162, B64C 1132
Patent
active
051747162
ABSTRACT:
The invention concerns a pitch change mechanism for an aircraft propeller in which a common ring gear (51) changes pitch of all propeller blades on a given rotor simultaneously. Motion of the ring gear (51) is induced by a planet (40)-and-carrier (101) system driven by a pinion (110). Acceleration of the pinion causes a change toward flat pitch. Deceleration of the pinion causes change toward feathered pitch. If the motor driving the pinion fails, a large deceleration occurs, driving the blades to a safe, feathered position.
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Article--"A New Design for a Contra-Prop"--Aeronautical Engineering.
Hora Petr
Miller Edwin K.
General Electric Company
Larson James A.
Look Edward K.
Rafter John R.
Squillaro Jerome C.
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