Aircraft landing gear truck orientation for noise reduction

Details Aircraft landing gear truck orientation for noise reduction Aircraft landing gear truck orientation for noise reduction

2006-08-11

2010-10-19

Dinh, Tien (Department: 3644)

Aeronautics and astronautics

Miscellaneous

C244S1020SS

Reexamination Certificate

active

07815143

ABSTRACT:
Methods of reducing aircraft noise from landing gear during take off and landing maneuvers. An actuated multi-axle landing gear truck is oriented such that a plane through the axles is substantially parallel to the aircraft water line during approach and takeoff. The embodiment retains the capability to re-orient the truck “toes up” or “toes down,” as may be required, just before touchdown to facilitate rapid application of braking and speed brake/spoiler deployment. It also maintains the capability to re-orient the truck during gear retraction after take off to fit into the aircraft wheel wells. The invention may be retrofitted to existing aircraft or deployed on new aircraft.

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Guo, Yueping, “Empirical Prediction of Aircraft Landing Gear Noise”, Jul. 2005, NASA CR-2005-213780.

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