Rotor shaft support and drive arrangement
First Claim
1. A fluid damper for absorbing radial motion of a bearing supporting a rotary shaft, comprising a series of circumferentially distributed fluid containing cylinders adapted to be concentrically placed about the bearing, each one of said fluid cylinders being radially oriented relative to the bearing and defining a chamber in which a piston is slidably displaceable against a damping fluid to oppose a radial movement of the bearing.
1 Assignment
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Accused Products
Abstract
A rotor shaft support and drive arrangement comprises a bearing damper including a number of interconnected oil cylinders circumferentially distributed about a rotor to dampen the vibration thereof. A flexible diaphragm coupling is provided for transmitting a driving torque. The flexible diaphragm coupling provides improved misalignment capability.
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Citations
30 Claims
- 1. A fluid damper for absorbing radial motion of a bearing supporting a rotary shaft, comprising a series of circumferentially distributed fluid containing cylinders adapted to be concentrically placed about the bearing, each one of said fluid cylinders being radially oriented relative to the bearing and defining a chamber in which a piston is slidably displaceable against a damping fluid to oppose a radial movement of the bearing.
- 10. A drive connection for a rotor shaft, comprising a driving member having a first meshing structure, a driven member adapted to rotate with a rotor shaft and having a second meshing structure, and an intermediate diaphragm coupling adapted to be mounted about the rotor shaft and having third and fourth meshing structures flexibly connected to each other for meshing engagement, respectively, with said first and second meshing structures for enabling said driven member to rotate with said driving member.
- 15. A helicopter rotor support and drive arrangement, comprising a stationary housing adapted to be rigidly mounted to an airframe of a helicopter, a helicopter rotor extending through said stationary housing, bearings for rotatably supporting said helicopter rotor in said stationary housing, a fluid damping structure for accommodating radial motion of said helicopter rotor relative to said stationary housing, a driving member mounted in said stationary housing and having a first meshing structure, a driven member for rotation with said helicopter rotor and having a second meshing structure, and an intermediate diaphragm coupling mounted about said helicopter rotor and having third and fourth axially spaced-apart meshing structures flexibly connected to each other for meshing engagement, respectively, with said first and second meshing structures to transmit a torque from said driving member to said driven member and said helicopter rotor.
Specification