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US 2014/0234102 A1Published application
Radial fluid device with variable phase and amplitude
AssigneeBell Helicopter Textron Inc.
InventorCarlos A. Fenny
Life of this patent
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Abstract
According to one embodiment, a radial fluid device comprises a cylinder block, first and second pluralities of pistons, a first cam disposed about the first plurality of radially extending cylinders, and a second cam disposed about the second plurality of radially extending cylinders. The direction of rotation of the second cam is independent of the direction of rotation of the first cam.
Claims36
A rotorcraft, comprising:
- a body;
- a power train coupled to the body and comprising a power source and a drive shaft coupled to the power source;
- a rotor system coupled to the power train, the rotor system comprising a rotor blade;
- an actuator coupled to and operable to move the rotor blade;
- and
- a radial fluid device in fluid communication with the actuator, the radial fluid device comprising:
- a cylinder block comprising a first plurality of radially extending cylinders and a second plurality of radially extending cylinders, wherein the cylinder block is mounted for rotation;
- a first plurality of pistons each slidably received within a different one of the first plurality of radially extending cylinders;
- a second plurality of pistons each slidably received within a different one of the second plurality of radially extending cylinders;
- a first cam disposed about the first plurality of radially extending cylinders and rotatable in a first direction and in a second direction opposite the first direction;
- and
- a second cam disposed about the second plurality of radially extending cylinders and rotatable in the first direction and the second direction, wherein the direction of rotation of the second cam is independent of the direction of rotation of the first cam.
9 more elements
A method of adjusting fluid flow in a radial fluid device, comprising:
- providing a cylinder block assembly comprising:
- a cylinder block comprising a first plurality of radially extending cylinders and a second plurality of radially extending cylinders, wherein the cylinder block is mounted for rotation;
- a first plurality of pistons each slidably received within a different one of the first plurality of radially extending cylinders;
- and
- a second plurality of pistons each slidably received within a different one of the second plurality of radially extending cylinders;
- rotating a first cam about the first plurality of radially extending cylinders;
- and
- rotating a second cam about the second plurality of radially extending cylinders independently of the direction of rotating of the first cam.
5 more elements
A radial fluid device comprising:
- a cylinder block comprising a first plurality of radially extending cylinders and a second plurality of radially extending cylinders, wherein the cylinder block is mounted for rotation;
- a first plurality of pistons each slidably received within a different one of the first plurality of radially extending cylinders;
- a second plurality of pistons each slidably received within a different one of the second plurality of radially extending cylinders;
- a first cam disposed about the first plurality of radially extending cylinders and rotatable in a first direction and in a second direction opposite the first direction;
- and
- a second cam disposed about the second plurality of radially extending cylinders and rotatable in the first direction and the second direction, wherein the direction of rotation of the second cam is independent of the direction of rotation of the first cam.
3 more elements
Dependencies are inferred from the claim text.