Apparatus for prerotating aircraft wheels employing forced air a

Details Apparatus for prerotating aircraft wheels employing forced air a Apparatus for prerotating aircraft wheels employing forced air a

1991-11-06

1992-11-24

Peters, Jr., Joseph F.

Aeronautics and astronautics

Landing gear

Wheel

B64C 2532

Patent

active

051656248

ABSTRACT:
An apparatus and control system for prerotating the landing gear wheels of an airplane is disclosed. The apparatus includes an impeller disc attached to the rim of the wheel. The disc includes a plurality of blades. A housing covers the upper half of the impeller disc and is attached to the landing gear strut. A vacuum source is linked to one hole in the housing, and a forced air source is linked to a diametrically opposite hole. The vacuum source creates an entering stream of air which impacts on the blades creating a torque which rotates the impeller disc and wheel. Additionally, the forced air stream impacts directly on the blades to provide an additional torque. Finally, since only the lower part of the impeller disc and the associated portion of blades are exposed to the passing air stream, a third torque is created. A control system opens and closes a control valve to supply the appropriate amount of air to the impeller blades to thereby match the rotational speed of the wheels with the speed of the plane at touch down. Alternatively, hydraulic or electric motors may replace the air driven impeller system.

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Miscellaneous Patent Abstracts prepared by Dialog Information Systems (13).

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