IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0449807
(2012-04-18)
|
등록번호 |
US-8763958
(2014-07-01)
|
발명자
/ 주소 |
- Turner, Travis L.
- Khorrami, Mehdi R.
- Lockard, David P.
- McKenney, Martin J.
- Atherley, Raymond D.
- Kidd, Reggie T.
|
출원인 / 주소 |
- The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
5 |
초록
▼
A multi-element airfoil system includes an airfoil element having a leading edge region and a skin element coupled to the airfoil element. A slat deployment system is coupled to the slat and the skin element, and is capable of deploying and retracting the slat and the skin element. The skin element
A multi-element airfoil system includes an airfoil element having a leading edge region and a skin element coupled to the airfoil element. A slat deployment system is coupled to the slat and the skin element, and is capable of deploying and retracting the slat and the skin element. The skin element substantially fills the lateral gap formed between the slat and the airfoil element when the slat is deployed. The system further includes an uncoupling device and a sensor to remove the skin element from the gap based on a critical angle-of-attack of the airfoil element. The system can alternatively comprise a trailing edge flap, where a skin element substantially fills the lateral gap between the flap and the trailing edge region of the airfoil element. In each case, the skin element fills a gap between the airfoil element and the deployed flap or slat to reduce airframe noise.
대표청구항
▼
1. A multi-element airfoil system comprising: an airfoil element having a leading edge region;a slat coupled to said airfoil element and capable of alternating between a retracted position and an extended position, wherein a gap is disposed between said slat and said airfoil element when said slat i
1. A multi-element airfoil system comprising: an airfoil element having a leading edge region;a slat coupled to said airfoil element and capable of alternating between a retracted position and an extended position, wherein a gap is disposed between said slat and said airfoil element when said slat is disposed in said extended position;a skin element movably coupled to said leading edge region of said airfoil element, wherein said skin element is capable of alternating between a deployed position and a nested position;a slat deployment system coupled to said slat and said skin element, wherein said slat deployment system is capable of moving said slat between said retracted position and said deployed position, and is capable of moving said skin element between said deployed position and said nested position, wherein said skin element substantially fills said gap when said skin element is disposed in said deployed position; andan uncoupling device for uncoupling said slat deployment system from said skin element, wherein said uncoupling causes said skin element to move to said nested position while said slat is disposed in said extended position. 2. The multi-element airfoil system of claim 1, further comprising a sensor for sensing an angle-of-attack of said airfoil element, wherein said sensor is in communication with said uncoupling device, wherein said sensor causes said uncoupling device to uncouple based on said angle-of-attack of said airfoil element. 3. The multi-element airfoil system of claim 1, wherein said skin element is substantially adjacent to said leading edge region when said skin element is disposed in said nested position. 4. The multi-element airfoil system of claim 3, wherein said skin element is moved upward and outward from said leading edge region when said skin element is moved into said deployed position. 5. The multi-element airfoil system of claim 1, wherein said skin element has a spring bias toward said leading edge region. 6. The multi-element airfoil system of claim 5, wherein said skin element cantilevered from said leading edge region. 7. The multi-element airfoil system of claim 6, wherein said skin element is hingedly coupled to said leading edge region. 8. The multi-element airfoil system of claim 7, said slat comprising a trailing edge, wherein said skin element is in lapped engagement with said trailing edge when said skin element is disposed in said deployed position. 9. The multi-element airfoil system of claim 1, wherein said skin element is deformable. 10. The multi-element airfoil system of claim 9, wherein said skin element is capable of deforming 1-2%. 11. The multi-element airfoil system of claim 1, wherein said deformable skin comprises a shape memory alloy. 12. The multi-element airfoil system of claim 1, further comprising: said airfoil element having a trailing edge region, wherein said trailing edge region comprises a second skin element movably coupled to said airfoil element;a flap coupled to said airfoil element;a flap deployment system coupled to said flap and said second skin element for simultaneously moving said flap and said second skin element; anda device for uncoupling said flap deployment system from said second skin element based on angle-of-attack of said airfoil element. 13. The multi-element airfoil system of claim 10, wherein said second skin element comprises a shape memory alloy. 14. A multi-element airfoil system comprising: an airfoil element having a leading edge region;a skin element comprising a deformable material, wherein said skin element is cantilevered from said leading edge region and capable of deforming between a deployed position and a nested position;a slat positioned substantially forward of said leading edge region; anda slat deployment system coupled to said slat and said deformable skin, wherein said slat deployment system is capable of simultaneously moving said slat away from said leading edge region to form a lateral gap therebetween, and moving said skin element into lapped engagement with said slat to thereby span said lateral gap. 15. The multi-element airfoil system of claim 14, wherein said slat deployment system is capable of simultaneously (i) moving said skin element from said lapped engagement and into incorporation with said leading edge region, and (ii) moving said slat into nested engagement with said leading edge region. 16. The multi-element airfoil system of claim 15, wherein said skin element comprises a shape memory alloy. 17. The multi-element airfoil system of claim 9, wherein said deformable skin is spring-biased for incorporation with said leading edge region. 18. The multi-element airfoil system of claim 17, further comprising an uncoupling device in communication with said slat and said skin element, wherein said uncoupling device is capable of uncoupling said slat deployment system from said skin element based on angle-of-attack of said airfoil element. 19. A multi-element airfoil system comprising: an airfoil element having a leading edge region;a slat coupled to said airfoil element and capable of alternating between a retracted position and an extended position, wherein a gap is disposed between said slat and said airfoil element when said slat is disposed in said extended position;a cantilevered skin element movably coupled along said leading edge region of said airfoil element, wherein said skin element is capable of alternating between a deployed position and a nested position;a slat deployment system coupled to said slat and said skin element, wherein said slat deployment system is capable of moving said slat between said retracted position and said deployed position, and is capable of moving said skin element between said deployed position and said nested position, wherein said skin element substantially fills said gap when said skin element is disposed in said deployed position; andan uncoupling device for uncoupling said slat deployment system from said skin element, wherein said uncoupling causes said skin element to move to said nested position while said slat is disposed in said extended position. 20. The multi-element airfoil system of claim 19, further comprising a sensor in communication with said uncoupling device for sensing a critical condition, wherein said sensor is capable of sensing an angle-of-attack of said airfoil and activating said uncoupling device to move said skin element to said nested position while slat is disposed in said extended position.
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