IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0613009
(2015-02-03)
|
등록번호 |
US-10053215
(2018-08-21)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- BELL HELICOPTER TEXTRON INC.
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
5 |
초록
▼
An electro-hydraulic on-blade actuation system includes a pair of linear motors, a pair of flexible bladders and a pair of hydraulic units. Each linear motor outputs linear force in response to input. The pair of flexible bladders attach to opposite sides of a rotorcraft blade. Each hydraulic unit c
An electro-hydraulic on-blade actuation system includes a pair of linear motors, a pair of flexible bladders and a pair of hydraulic units. Each linear motor outputs linear force in response to input. The pair of flexible bladders attach to opposite sides of a rotorcraft blade. Each hydraulic unit connects a linear motor to a flexible bladder to hydraulically transmit the linear force of the linear motor to the flexible bladder to actuate the rotorcraft blade.
대표청구항
▼
1. A rotorcraft blade actuation system comprising: a pair of linear motors, each linear motor to output linear force in response to input;a pair of flexible bladders to attach to opposite sides of a rotorcraft blade; anda pair of hydraulic units, each hydraulic unit comprising a fluid chamber connec
1. A rotorcraft blade actuation system comprising: a pair of linear motors, each linear motor to output linear force in response to input;a pair of flexible bladders to attach to opposite sides of a rotorcraft blade; anda pair of hydraulic units, each hydraulic unit comprising a fluid chamber connecting one of the linear motors to one of the flexible bladders, a slider in the fluid chamber to displace a hydraulic fluid in the fluid chamber to hydraulically transmit the linear force of the linear motor to the flexible bladder to actuate the rotorcraft blade, and a metal bellows surrounding at least a portion of the slider to seal the hydraulic fluid in the fluid chamber. 2. The system of claim 1, wherein each hydraulic unit further comprises a fluid conduit connecting the fluid chamber to the flexible bladder. 3. The system of claim 2, wherein an outer body of the fluid conduit includes a bend to connect the fluid chamber to the flexible bladder. 4. The system of claim 1, wherein the pair of flexible bladders are configured to attach to opposite sides of a trailing flap of the rotorcraft blade. 5. The system of claim 4, wherein a first flexible bladder of the pair of flexible bladders is configured to attach to an upper surface of the trailing flap and a second flexible bladder of the pair of flexible bladders is configured to attach to a lower surface of the trailing flap. 6. The system of claim 1, further comprising a controller to provide input power to the pair of linear motors. 7. The system of claim 6, wherein, in response to the input power from the controller, the pair of linear motors output respective linear forces in opposite directions. 8. The system of claim 1, wherein the pair of linear motors are positioned to output the linear forces along substantially a chord length of the rotorcraft blade. 9. A method comprising: generating a first linear force and an opposite second linear force along a chord length of a rotorcraft blade using a first linear motor and a second linear motor, respectively;hydraulically transmitting the first linear force and the second linear force to a first flexible bladder and a second flexible bladder using a first hydraulic unit and a second hydraulic unit, respectively, each of the first flexible bladder and the second flexible bladder attached to a surface of the rotorcraft blade, wherein the first hydraulic unit comprises a first fluid chamber, a first slider in the first fluid chamber that displaces a first hydraulic fluid in response to the first linear force and a first metal bellows surrounding at least a portion of the first slider to seal the first hydraulic fluid in the first fluid chamber, and the second hydraulic unit comprises a second fluid chamber, a second slider in the first fluid chamber that displaces a second hydraulic fluid in response to the second linear force and a second metal bellows surrounding at least a portion of the second slider to seal the second hydraulic fluid in the second fluid chamber; andexpanding and contracting the first flexible bladder and the second flexible bladder, respectively, in response to the first linear force and the second linear force, respectively, to actuate the rotorcraft blade. 10. The method of claim 9, further comprising: transmitting the first hydraulic fluid displaced by the first slider to the first flexible bladder through a first conduit connecting the first fluid chamber to the first flexible bladder; andtransmitting the second hydraulic fluid displaced by the second slider to the second flexible bladder through a second conduit connecting the second fluid chamber to the second flexible bladder. 11. The method of claim 10, wherein: an outer body of the first fluid conduit includes a first bend to connect the first fluid chamber to the first flexible bladder; andan outer body of the second fluid conduit includes a second bend to connect the second fluid chamber to the second flexible bladder. 12. The method of claim 9, further comprising attaching the first flexible bladder and the second flexible bladder to opposite sides of a trailing flap of the rotorcraft blade. 13. The method of claim 12, further comprising expanding and contracting the first flexible bladder and the second flexible bladder, respectively, in response to the first linear force and the second linear force, respectively, to actuate the trailing flap. 14. A rotorcraft blade actuation system comprising: a first linear motor to output linear force in a first direction in response to input;a second linear motor to output linear force in a second direction opposite the first direction in response to input;a first flexible bladder to attach to a first side of a rotorcraft blade;a second flexible bladder to attach to a second side of the rotorcraft blade, the second side opposite the first side;a first hydraulic unit comprising a first fluid chamber connecting the first linear motor to the first flexible bladder, a first slider in the first fluid chamber to displace a first hydraulic fluid in response to receiving the linear force from the first linear motor, a first metal bellows surrounding at least a portion of the first slider to seal a first hydraulic fluid in the first fluid chamber and to hydraulically transmit the linear force of the first linear motor to the first flexible bladder to actuate the rotorcraft blade; anda second hydraulic unit comprising a second fluid chamber connecting the second linear motor to the second flexible bladder, a second slider in the second fluid chamber to displace a second hydraulic fluid in response to receiving the linear force from the second linear motor, a second metal bellows surrounding at least a portion of the second slider to seal the second hydraulic fluid in the second fluid chamber and to hydraulically transmit the linear force of the second linear motor to the second flexible bladder to actuate the rotorcraft blade.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.