[특허]Independent blade control system with rotary blade actuator

Bell Helicopter Textron Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Independent blade control system with rotary blade actuator

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64C-027/52 B64C-027/72 F04C-009/00 F15B-015/12
출원번호	US-0565577 (2012-08-02)
등록번호	US-9061760 (2015-06-23)
발명자 / 주소	Fenny, Carlos A.
출원인 / 주소	Bell Helicopter Textron Inc.
대리인 / 주소	Bell Helicopter Textron Inc.
인용정보	피인용 횟수 : 1 인용 특허 : 17

초록
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According to one embodiment, a rotary blade actuator includes a housing, a vane disposed within the housing, a shaft disposed at least partially within the housing and coupled to the vane. The vane comprises a first vane surface disposed within a first chamber between a first fluid opening and a second fluid opening and a second vane surface disposed within a second chamber between a third fluid opening and a fourth fluid opening. The first and third fluid openings are configured to provide a first fluid to the first chamber and the second chamber at a first pressure, the second fluid opening is configured to provide a second fluid to the first chamber at a second pressure, and the fourth fluid opening is configured to provide a third fluid to the second chamber at a third pressure different from the second pressure.

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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 rotor system coupled to the power train and comprising a rotor blade; anda rotary actuator coupled to the at least one rotor blade, the rotary actuator comprising: a housing comprising a first chamber and a second chamber, wherein the first chamber features a first fluid opening and a second fluid opening and the second chamber features a third fluid opening and a fourth fluid opening;a first fluid source in fluid communication with the first and third fluid openings and configured to provide a first fluid to the first chamber and the second chamber at a first pressure;a second fluid source in fluid communication with the second fluid opening and configured to provide a second fluid to the first chamber at a second pressure;a third fluid source in fluid communication with the fourth fluid opening and configured to provide a third fluid to the second chamber at a third pressure different than the second pressure;a vane disposed within the housing, the vane comprising a first vane surface disposed within the first chamber between the first fluid opening and the second fluid opening and a second vane surface disposed within the second chamber between the third fluid opening and the fourth fluid opening; anda shaft disposed at least partially within the housing and coupled to the vane, wherein the shaft is coupled to the rotor blade such that the shaft transfers movement of the vane to the rotor blade. 2. The rotorcraft of claim 1, further comprising at least one fluid pump operable to provide the first fluid through the first fluid opening and the third fluid opening and provide the second fluid through the second fluid opening. 3. The rotorcraft of claim 1, wherein the first fluid has a varying pressure and the second fluid has an approximately constant pressure. 4. The rotorcraft of claim 1, wherein: the housing further comprises a third chamber featuring a fifth fluid opening and a sixth fluid opening;the first fluid source is in fluid communication with the fifth opening and configured to provide the first fluid to the third chamber at the first pressure;the third fluid source is in fluid communication with the sixth opening and configured to provide the third fluid to the third chamber at the third pressure; andthe vane further comprises a third surface disposed within the third chamber between the fifth fluid opening and the sixth fluid opening. 5. The rotorcraft of claim 1, the rotary actuator further comprising a plurality of bearings separating the shaft from the housing. 6. The rotorcraft of claim 5, the housing further comprising at least one surface configured to direct at least some leaking fluid from the first chamber or the second chamber through a portion of at least one of the plurality of bearings. 7. The rotorcraft of claim 1, the rotary actuator further comprising an elastomeric seal coupled to the shaft and to the housing, the elastomeric seal configured to prevent at least some fluid from leaking out of the rotary actuator between the shaft and the housing. 8. The rotorcraft of claim 1, wherein the first vane surface separates the first fluid from the second fluid within the first chamber and the second vane surface separates the first fluid from the third fluid within the second chamber. 9. The rotorcraft of claim 1, wherein the vane is operable to rotate in response to a difference in forces applied against the vane by the first fluid in a first direction and by the second and third fluids in an opposing second direction. 10. The rotorcraft of claim 4, wherein the third vane surface separates the first fluid from the third fluid within the third chamber. 11. A rotary blade actuator, comprising: a housing comprising a first chamber and a second chamber, wherein: the first chamber features a first fluid opening and a second fluid opening and the second chamber features a third fluid opening and a fourth fluid opening,the first and third fluid openings are configured to provide a first fluid to the first chamber and the second chamber at a first pressure,the second fluid opening is configured to provide a second fluid to the first chamber at a second pressure, andthe fourth fluid opening is configured to provide a third fluid to the second chamber at a third pressure different from the second pressure;a vane disposed within the housing, the vane comprising a first vane surface disposed within the first chamber between the first fluid opening and the second fluid opening and a second vane surface disposed within the second chamber between the third fluid opening and the fourth fluid opening;a shaft disposed at least partially within the housing and coupled to the vane, the shaft operable to rotate in response to movements of the vane. 12. The rotary blade actuator of claim 11, wherein the first fluid has a varying pressure and the second fluid has an approximately constant pressure. 13. The rotary blade actuator of claim 11, wherein: the housing further comprises a third chamber featuring a fifth fluid opening and a sixth fluid opening;the fifth fluid opening is configured to provide the first fluid to the third chamber at the first pressure;the sixth fluid opening is configured to provide the third fluid to the third chamber at the third pressure; andthe vane further comprises a third surface disposed within the third chamber between the fifth fluid opening and the sixth fluid opening. 14. The rotary blade actuator of claim 11, further comprising a plurality of bearings separating the shaft from the housing. 15. The rotary blade actuator of claim 14, the housing further comprising at least one surface configured to direct at least some leaking fluid from the first chamber or the second chamber through a portion of at least one of the plurality of bearings. 16. The rotary blade actuator of claim 14, further comprising an elastomeric seal coupled to the shaft and to the housing, the elastomeric seal configured to prevent at least some fluid from leaking out of the rotary actuator between the shaft and the housing. 17. The rotary blade actuator of claim 11, wherein the first vane surface separates the first fluid from the second fluid within the first chamber and the second vane surface separates the first fluid from the third fluid within the second chamber. 18. The rotary blade actuator of claim 11, wherein the vane is operable to rotate in response to a difference in forces applied against the vane by the first fluid in a first direction and by the second and third fluids in an opposing second direction. 19. The rotary blade actuator of claim 13, wherein the third vane surface separates the first fluid from the third fluid within the third chamber.

이 특허에 인용된 특허 (17)

이 특허를 인용한 특허 피인용횟수: 1

Pedrami, Reza; Jarvo, James Robert; Renaud, Benjamin. Metering of oil flow to engine propeller. USP20180910072796.

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특허 상세정보

Independent blade control system with rotary blade actuator

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이 특허에 인용된 특허 (17)

이 특허를 인용한 특허 피인용횟수: 1

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Independent blade control system with rotary blade actuator

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이 특허에 인용된 특허 (17)

이 특허를 인용한 특허 피인용횟수: 1

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IPC 상세정보(version : 201201)

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