De-rotation system suitable for use with a shaft fairing system
First Claim
Patent Images
1. A de-rotation system for a fairing comprising:
- a first ring gear rotatable about a rotor axis of rotation;
a second ring gear rotatable about said rotor axis of rotation;
a gear set in meshing engagement with said first ring gear and said second ring gear;
a housing which supports said gear set, said gear set operable to control a position of said housing about said rotor axis of rotation; and
a shaft fairing mounted to said housing for rotation about said rotor axis of rotation.
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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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Citations
20 Claims
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1. A de-rotation system for a fairing comprising:
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a first ring gear rotatable about a rotor axis of rotation; a second ring gear rotatable about said rotor axis of rotation; a gear set in meshing engagement with said first ring gear and said second ring gear; a housing which supports said gear set, said gear set operable to control a position of said housing about said rotor axis of rotation; and a shaft fairing mounted to said housing for rotation about said rotor axis of rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A counter-rotating coaxial rotor system comprising:
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a lower rotor hub mounted to a lower rotor shaft which rotates about a rotor axis of rotation; an upper rotor hub mounted to an upper rotor shaft which rotates about said rotor axis of rotation in a direction counter to said rotation of said lower rotor shaft, said upper rotor shaft mounted at least partially through said lower rotor shaft; an upper hub fairing mounted at least partially about said upper rotor hub; a lower hub fairing mounted at least partially about said lower rotor hub; a shaft fairing mounted between said upper hub fairing and said lower hub fairing for rotation about said rotor axis of rotation; a first ring gear defined about said rotor axis of rotation, said first ring gear mounted for rotation with said upper rotor shaft; a second ring gear defined about said rotor axis of rotation, said first ring gear mounted for rotation with said lower rotor shaft; a gear set in meshing engagement with said first ring gear and said second ring gear; and a housing mounted to said shaft fairing to support said gear set, said gear set operable to control a position of said shaft fairing about said axis of rotation. - View Dependent Claims (16, 17, 18)
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19. An aircraft having a counter-rotating coaxial rotor system comprising:
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a lower rotor hub mounted to a lower rotor shaft which rotates about a rotor axis of rotation; an upper rotor hub mounted to an upper rotor shaft which rotates about said rotor axis of rotation in a direction counter to said rotation of said lower rotor shaft, said upper rotor shaft mounted at least partially through said lower rotor shaft; an upper hub fairing mounted at least partially about said upper rotor hub; a lower hub fairing mounted at least partially about said lower rotor hub; a shaft fairing mounted between said upper hub fairing and said lower hub fairing for rotation about said rotor axis of rotation; a first ring gear defined about said rotor axis of rotation, said first ring gear mounted for rotation with said upper rotor shaft; a second ring gear defined about said rotor axis of rotation, said first ring gear mounted for rotation with said lower rotor shaft; a gear set in meshing engagement with said first ring gear and said second ring gear; and a housing mounted to said shaft fairing to support said gear set, said gear set operable to control a position of said shaft fairing about said axis of rotation. - View Dependent Claims (20)
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Specification