Methods and apparatus to vary reverse thrust of aircraft engines
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02K-001/72
F02K-001/76
출원번호
US-0596969
(2015-01-14)
등록번호
US-10018151
(2018-07-10)
발명자
/ 주소
Nakhjavani, Omid B.
Gilbert, Anthony K.
Na, Andrew
Heidari, Mohammad A.
출원인 / 주소
The Boeing Company
대리인 / 주소
Hanley, Flight & Zimmerman, LLC
인용정보
피인용 횟수 :
0인용 특허 :
23
초록▼
Methods and apparatus to vary reverse thrust of aircraft engines are disclosed. An example cascade apparatus disclosed herein includes a cascade frame having a first end, a second end, and a fixed structure extending between the first end and second end, where the cascade frame defines a slot. A cas
Methods and apparatus to vary reverse thrust of aircraft engines are disclosed. An example cascade apparatus disclosed herein includes a cascade frame having a first end, a second end, and a fixed structure extending between the first end and second end, where the cascade frame defines a slot. A cascade forms a reverse thrust flow path and at least a portion of the cascade is slidably coupled to the frame via the slot. The cascade slides relative the frame between a first position to produce a first reverse thrust and a second position to produce a second reverse thrust, where the first reverse thrust is different than the second reverse thrust.
대표청구항▼
1. A cascade apparatus for use with a turbofan engine comprising: a cascade frame having a first end, a second end, and a fixed structure extending between the first end and second end, the cascade frame defining a slot; anda cascade to form a reverse thrust flow path, at least a portion of the casc
1. A cascade apparatus for use with a turbofan engine comprising: a cascade frame having a first end, a second end, and a fixed structure extending between the first end and second end, the cascade frame defining a slot; anda cascade to form a reverse thrust flow path, at least a portion of the cascade being slidably coupled to the frame via the slot, the cascade to slide relative to the frame between a first position to produce a first reverse thrust and a second position to produce a second reverse thrust, the first reverse thrust being different than the second reverse thrust, the cascade including a first plurality of vanes that intersect a second plurality of vanes to define the reverse thrust flow path, the first vanes being fixed and perpendicular relative to the second vanes. 2. The apparatus of claim 1, wherein at least one of the first vanes or the second vanes slidably coupled to the slot of the cascade frame. 3. The apparatus of claim 1, further comprising a rack-and-pinion assembly coupled to the cascade via a link, the rack-and-pinion assembly to cause the cascade to slide relative to the frame. 4. The apparatus of claim 3, wherein a first end of the link is coupled to the cascade and a second end of the link is coupled to a pinion of the rack-and-pinion assembly. 5. The apparatus of claim 3, further comprising an actuator to cause a rack of the rack-and-pinion assembly to slide, wherein a first position of the rack is associated with the first position of the cascade and a second position of the rack is associated with the second position of the cascade. 6. The apparatus of claim 1, wherein the cascade is to shift relative to the frame in an outward direction when the cascade moves between the first position and the second position. 7. The apparatus of claim 6, wherein the cascade is to shift away from the frame when the cascade moves toward the second position and the cascade is to shift toward the frame when the cascade moves toward the first position. 8. The apparatus of claim 6, wherein an outer edge of the cascade is at a first distance from an outer edge of the fixed structure when the cascade is in the first position and the outer edge of the cascade is at a second distance from the outer edge of the fixed structure when the cascade is in the second position, the second distance being greater than the first distance. 9. A cascade apparatus for use with a turbofan engine comprising: a cascade frame having a first end, a second end, and a fixed structure extending between the first end and second end, the cascade frame defining a slot; anda cascade to form a reverse thrust flow path, at least a portion of the cascade being slidably coupled to the frame via the slot, the cascade to slide relative to the frame between a first position to produce a first reverse thrust and a second position to produce a second reverse thrust, the first reverse thrust being different than the second reverse thrust, wherein the cascade is to shift relative to the cascade frame in an outward direction when the cascade moves between the first position and the second position, wherein an outer edge of the cascade and an outer edge of the fixed structure are flush when the cascade is in the first position, and wherein the outer edge of the cascade is spaced away from the outer edge of the fixed structure when the cascade is in the second position. 10. The apparatus of claim 1, wherein the cascade varies a reverse thrust provided by the reverse thrust flow path that is proportional to a position of the cascade relative to the fixed structure. 11. The apparatus of claim 1, wherein in the second position, the cascade provides an angle of attack that enables an aircraft to move in a rearward direction from an initially stationary position. 12. The apparatus of claim 9, wherein the cascade is to shift away from the frame when the cascade moves toward the second position and the cascade is to shift toward the frame when the cascade moves toward the first position. 13. The apparatus of claim 9, wherein the outer edge of the cascade is at a first distance from the outer edge of the fixed structure when the cascade is in the first position and the outer edge of the cascade is at a second distance from the outer edge of the fixed structure when the cascade is in the second position, the second distance being greater than the first distance. 14. A method to control reverse thrust of an aircraft engine comprising: varying a position of a cascade relative to a position of a frame by sliding the cascade relative to the frame to vary a reverse thrust provided by a reverse thrust flow path defined by the cascade, the reverse thrust being proportional to a position of the cascade relative to the frame, the cascade including the first vanes and second vanes, the first vanes being fixed to and intersecting second vanes such that the first vanes and the second vanes define a plurality of openings formed in a grid pattern. 15. The method of claim 14, wherein varying the position of the cascade relative to the frame comprises sliding the cascade relative to the frame along a path defined by a slot of the frame. 16. The method of claim 14, further comprising moving the cascade to a first position relative to the frame to provide a first reverse thrust and moving the cascade to a second position relative to the frame to provide a second reverse thrust, the second reverse thrust being greater than the first reverse thrust. 17. The method of claim 16, further comprising moving the cascade to an intermediate position between the first position and the second position to provide an intermediate reverse thrust, the intermediate reverse thrust being greater than the first reverse and less than the second reverse thrust provided by the cascade in the second position. 18. The method of claim 16, further comprising actuating a rack-and-pinion assembly to move the cascade relative to the frame between the first and second positions, the cascade being operatively coupled to the rack-and-pinion assembly via a link. 19. The method of claim 14, further comprising operatively coupling the cascade to a drive system of a reverse thrust blocker door such that operation of the reverse thrust blocker door between a first position and a second position causes the cascade to slide relative to the frame between the first and second positions. 20. A cascade apparatus for use with a turbofan comprising: means for providing reverse thrust, the means for providing reverse thrust including first means for directing fluid flow and second means for directing fluid flow, the first means for directing fluid flow being fixed to and intersecting the second means for directing fluid flow such that the first means for directing fluid flow is non-parallel relative to the second means for directing fluid flow; andmeans for supporting the means for providing reverse thrust, the means for supporting having means for slidably receiving the means for providing reverse thrust to enable the first means for directing fluid flow and the second means for directing fluid flow to move relative to the means for supporting between a first position and a second position, the means for providing reverse thrust to provide a first reverse thrust in the first position and second reverse thrust in the second position, the first reverse thrust being different than the second reverse thrust. 21. The apparatus of claim 20, further comprising means for actuating operatively coupled to the means for providing reverse thrust to move the means for providing reverse thrust between the first and second positions relative to the means for supporting. 22. The apparatus of claim 20, wherein the first means for directing fluid flow is fixed to the second means for directing fluid flow.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (23)
Montgomery Ronald (Belfast IEX), Actuating mechanism for the thrust reversal doors of a gas turbine engine.
Thayer Edward B. (Jupiter FL) Scott Philip R. (Lake Park FL) Roach Thomas A. (Mauldin SC), Area controlled, thrust vectoring vane cascade with nutating control vane.
Middleman Lee M. ; Pyka Walter R. ; Buhler Michael ; Poncet Philippe ; Van Dyk Karl ; Jervis James E. ; Zadno Reza, Device or apparatus for manipulating matter.
Ward Eric J. (W. Palm Beach FL) Scott Philip R. (Lake Park FL) Thayer Edward B. (Jupiter FL), Linkage for area controlled, thrust vectoring vane cascade.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.