Aircraft propeller with improved spinner assembly

Details Aircraft propeller with improved spinner assembly Aircraft propeller with improved spinner assembly

1986-03-26

1987-10-13

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With heating, cooling or thermal insulation means

416155, 416245R, B64C 1144, B64C 1114

Patent

active

046995684

ABSTRACT:
A propeller hub supports a plurality of adjustable pitch propeller blades which are rotated on corresponding radial axes by a hydraulic actuating system supported by the hub. The hub and pitch changing system are enclosed by a spinner assembly including a substantially flat circular bulkhead member having a core molded between skins of resin impregnated high modulus fiber material. The bulkhead member supports a spinner dome of molded resin impregnated high modulus fiber material, and concentric slip rings are supported by a member connected to the rearward face of the bulkhead member. Terminal posts extend from the slip rings through the bulkhead member to receive conductor wires for supplying electrical current to de-icing heating elements mounted on the blades. A fairing is bonded to the spinner dome for each blade to provide for optimum aerodynamic flow around the base portion of each blade, and each fairing is formed by a molded resin skin material covering a rigid foam core.

REFERENCES:
patent: 2401247 (1946-05-01), Hunter
patent: 3115937 (1963-12-01), Biermann
patent: 3380535 (1968-04-01), Biermann
patent: 3455396 (1969-07-01), Cummings
patent: 3575529 (1971-04-01), Bierman
patent: 3578526 (1971-05-01), Harding
patent: 3664764 (1972-05-01), Davies et al.
patent: 4097189 (1978-06-01), Harlamert
patent: 4344995 (1982-08-01), Hammer
patent: 4407635 (1983-10-01), Grimes et al.
patent: 4419053 (1983-12-01), Swearingen

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