According to one embodiment, a rotor brake includes a first braking surface having an opening therethrough, a second braking surface adjacent to the first braking surface, and an impeller disposed between the first and second braking surfaces such that rotation of the impeller pulls fluid through th
According to one embodiment, a rotor brake includes a first braking surface having an opening therethrough, a second braking surface adjacent to the first braking surface, and an impeller disposed between the first and second braking surfaces such that rotation of the impeller pulls fluid through the opening of the first braking surface and expels the fluid out through a gap between the first and second braking surfaces.
대표청구항▼
1. 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 main rotor system coupled to the power train, the main rotor system comprising at least one main rotor blade;a rotor brake system coupled to the power t
1. 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 main rotor system coupled to the power train, the main rotor system comprising at least one main rotor blade;a rotor brake system coupled to the power train, the rotor brake system comprising at least one caliper, at least one brake pad, a duct, and a rotor brake in mechanical communication with the drive shaft, the rotor brake comprising: a first braking surface having an opening therethrough;a second braking surface adjacent to the first braking surface; andan impeller disposed between the first and second braking surfaces such that rotation of the impeller pulls fluid through the opening of the first braking surface and expels the fluid out through a gap between the first and second braking surfaces;wherein at least a portion of the rotor brake is disposed within the duct; andwherein an end of the duct that is disposed nearest the first braking surface is offset from the first braking surface along an axis of rotation of the impeller. 2. The rotorcraft of claim 1, wherein the first braking surface, the second braking surface, and the impeller, in combination, form a centrifugal pump. 3. The rotorcraft of claim 1, wherein the impeller is fixably coupled to the first and second braking surfaces. 4. The rotorcraft of claim 1, wherein the fluid is air. 5. The rotorcraft of claim 1, wherein the axis of rotation of the impeller passes through the opening of the first braking surface. 6. The rotorcraft of claim 1, wherein the rotor brake is in mechanical communication with the drive shaft such that the rotor brake and the drive shaft rotate at approximately the same speed. 7. The rotorcraft of claim 1, wherein the rotor brake is in mechanical communication with the drive shaft such slowing rotation of the rotor brake also slows rotation of the drive shaft. 8. A rotor brake system, comprising: a duct; anda rotor brake, comprising: a first braking surface having an opening therethrough;a second braking surface adjacent to the first braking surface; andan impeller disposed between the first and second braking surfaces such that rotation of the impeller pulls fluid through the opening of the first braking surface and expels the fluid out through a gap between the first and second braking surfaces;wherein at least a portion of the rotor brake is disposed within the duct; andwherein an end of the duct that is disposed nearest the first braking surface is offset from the first braking surface along an axis of rotation of the impeller. 9. The rotor brake of claim 8, wherein the first braking surface, the second braking surface, and the impeller, in combination, form a centrifugal pump. 10. The rotor brake of claim 8, wherein the impeller is fixably coupled to the first and second braking surfaces. 11. The rotor brake of claim 8, wherein the fluid is air. 12. The rotor brake of claim 8, wherein the axis of rotation of the impeller passes through the opening of the first braking surface. 13. A method of cooling a rotor brake in a rotorcraft, the method comprising: applying a friction force against the rotor brake;disposing at least a portion of the rotor brake within a duct and moving a fluid through the duct to the rotor brake;pumping the fluid through a portion of the rotor brake that is not disposed within the duct; andremoving heat from the rotor brake through the fluid. 14. The method of claim 13, wherein applying the friction force against the rotor brake comprises applying a first friction force against a first braking surface of the rotor brake and applying a second friction force against a second braking surface of the rotor brake. 15. The method of claim 14, wherein pumping the fluid through the rotor brake comprises pumping the fluid between the first and second braking surfaces. 16. The method of claim 15, wherein pumping the fluid between the first and second braking surfaces comprises pumping the fluid through an opening of the first braking surface and out through a gap between the first and second braking surfaces. 17. The method of claim 13, wherein pumping the fluid through the rotor brake comprises providing a centrifugal pump in the rotor brake configured to pump fluid through the rotor brake. 18. The method of claim 17, wherein the centrifugal pump comprises an impellor. 19. The method of claim 13, wherein applying the friction force against the rotor brake slows rotation of the rotor brake. 20. The method of claim 19, the rotorcraft comprising a power source, a drive shaft coupled to the power source, a main rotor system in mechanical communication with the drive shaft, and the rotor brake in mechanical communication with the drive shaft, wherein slowing rotation of the rotor brake slows rotation of at least one rotor blade of the main rotor system.
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이 특허에 인용된 특허 (5)
Nyhus Daniel A. ; Osder Stephen S., Active brake control for rotor/wing aircraft.
Rancourt Claude (1400 54ieme Rue Nord ; St. Georges Ouest Beauce County ; PQ CAX G5Y 5B7 ) Rancourt Yvon (3901 Chemin Mont Sauvage ; Apt. A-103 St. Adele ; PQ CAX J0R 1L0 ), Disc brake assembly.
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