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US 2014/0231579 A1Published application
Radial fluid device with multi-harmonic output
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 second cam has at least one more lobe than the first cam.
Claims24
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
- a second cam disposed about the second plurality of radially extending cylinders, wherein the second cam has at least one more lobe than the first cam.
9 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
- a second cam disposed about the second plurality of radially extending cylinders, wherein the second cam has at least one more lobe than the first cam.
3 more elements
A method of providing a multi-harmonic fluid flow, comprising:
- providing a first cylinder and a second cylinder in fluid communication with the first cylinder;
- providing a first piston slidably received within the first cylinder and a second piston slidably received within the second cylinder;
- stroking the first piston within the first cylinder a number of times per revolution;
- and
- stroking the second piston within the second cylinder at least one more time per revolution than the number of times the first piston strokes per revolution.
2 more elements
Dependencies are inferred from the claim text.