Aeronautics and astronautics – Landing gear – Wheel
Patent
1994-02-18
1995-05-23
Barefoot, Galen L.
Aeronautics and astronautics
Landing gear
Wheel
B64C 2540
Patent
active
054173876
ABSTRACT:
A rotator assembly for rotating an aircraft landing wheel by the action of the airstream flowing thereby has a circular plate mounted on the wheel and a plurality of independently movable scoops connected to the outer surface of the plate in circumferentially spaced relation. Each scoop has a leading edge facing generally in the direction in which the wheel is to be rotated, a convex curved trailing edge facing generally opposite the direction in which the wheel is to be rotated, and a central portion extending from the leading edge to the trailing edge. The leading edge is pivotally connected to the plate and the trailing edge is movable a distance outward relative to the plate outer surface. The airstream engages the convex trailing edge of the scoops which face generally toward the airstream to pivot them outward a distance from the plate to expose a surface area to the airstream which is greater than the surface area of the leading edge and central portion of the scoops which face generally away from the airstream such that the net torque force imparts rotation to the wheel. As the wheel rotates, the scoops which were previously pivoted outward become engaged by the airstream and are sequentially forced inward against the plate. An actuator may be connected with the scoops to selectively maintain all of the scoops inward against the plate to maintain the landing wheel in a substantially non-rotating condition or to allow each of the scoops to pivot independently.
REFERENCES:
patent: 1278174 (1918-09-01), Larimore
patent: 2383662 (1945-08-01), McClaskey
patent: 2397319 (1946-03-01), Johnson, Jr.
patent: 2412406 (1946-12-01), Kerezi et al.
patent: 2435459 (1948-02-01), Oden
Barefoot Galen L.
Roddy Kenneth A.
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