Variable pitch propellers

Details Variable pitch propellers Variable pitch propellers

1978-09-14

1982-06-01

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Having positive means for impeller adjustment

Power or manual actuator on non-rotatable part

416202, B64C 1132

Patent

active

043325262

ABSTRACT:
A variable pitch propeller e.g. for light aircraft has blades which are mounted in a hub for rotation about their longitudinal axes. The ends of the blades entering the hub have a crown of peripheral teeth meshing with axially slidable racks located at the center of the hub. In order to permit adjustment of play at the teeth flanks, the crowns are arranged at the ends of the blades at right angles to the axes of the blades and can be moved towards or away from the respective racks.

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patent: 3399582 (1968-09-01), Henry
patent: 3753375 (1973-08-01), Colletti

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