De-rotation system suitable for use with a shaft fairing system

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Reexamination Certificate

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Details

C244S017230, C244S017270, C244S130000, C416S033000, C416S041000, C416S124000, C416S179000, C416S24400R, C114S243000

Reexamination Certificate

active

07607607

ABSTRACT:
A de-rotation system includes a first ring gear defined about an axis of rotation, a second ring gear defined about the axis of rotation and a gear set in meshing engagement with the first ring gear and the second ring gear to control a position of a housing about the axis of rotation.

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Title: Experimental Investigation of Advanced Hub and Pylon Fairing Configurations to Reduce Helicopter Drag; By: D.M. Martin, R.W. Mort, L.A. Young, P.K. Squires; Dated: Sep. 1993, NASA Technical Memorandum 4540.
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PCT International Search Report and written opinion mailed Aug. 19, 2008 for PCT/US06/20349.

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