Variable pitch aircraft propeller

Details Variable pitch aircraft propeller Variable pitch aircraft propeller

1998-01-08

2000-12-05

Verdier, Christopher

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Nonmetallic resilient mounting

416138, 416139, 416168R, 416223R, 416226, 416228, 416230, 416231R, 416238, 416244R, 416245R, B64C 1106, B64C 1126, B64C 2748, B64C 2733

Patent

active

061557846

ABSTRACT:
A propeller for aircraft has a tip-to-tip flex-beam spar and torsionally stiff hollow blades bonded to the spar throughout an outer portion of the blades. The spar has two end caps which are separated from each other at the hub and converge in the outer portion. The blades have an inner region which is not bonded to the spar, allowing an inner portion of the spar to twist during pitch changes. A counterweight is mounted to an arm extending from an inner end cuff of each blade. The counterweight is located out of the plane of rotation. The counterweight is also located on a side of a line opposite from the trailing edge, the line passing through the pivot axis perpendicular to the plane of rotation.

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