Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Reexamination Certificate
2006-05-12
2009-11-24
Eldred, J. Woodrow (Department: 3641)
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
C244S017270, C244S130000, C416S041000, C416S124000, C416S179000, C416S24400R
Reexamination Certificate
active
07621480
ABSTRACT:
A rotor hub fairing system includes an upper hub fairing, a lower hub fairing and a shaft fairing therebetween. The rotor hub fairing system is attached to the counter-rotating, coaxial rotor system through a bearing arrangement such that the shaft fairing may be positioned at an azimuthal position about the main rotor axis of rotation relative the airframe by a de-rotation system. The de-rotation system controls the position of the shaft fairing about the axis of rotation such that the shaft fairing is prevented from rotating freely in unison with either shaft as may otherwise result during some flight regimes.
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Bertolotti Fabio P.
D'Anna Frank P.
Darrow, Jr. David A.
Sbabo Thomas L.
Carlson & Gaskey & Olds
Eldred J. Woodrow
Sikorsky Aircraft Corporation
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