IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0647524
(1991-01-18)
|
우선권정보 |
GB-0001822 (1990-01-26) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
4 |
초록
▼
A vectorable variable area nozzle is formed by a pair of parallel sidewalls, a pair of opposed clamshell elements arranged between the sidewalls and each able to rotate about an axis perpendicular to the sidewalls and a pair of flaps each pivotally lined to the downstream end of one of the clamshell
A vectorable variable area nozzle is formed by a pair of parallel sidewalls, a pair of opposed clamshell elements arranged between the sidewalls and each able to rotate about an axis perpendicular to the sidewalls and a pair of flaps each pivotally lined to the downstream end of one of the clamshell elements.In use the thrust produced by the nozzle can be vectored by rotating the two clamshells about their respective axes.
대표청구항
▼
1. A vectorable variable area nozzle comprising:a pair of fixed parallel sidewalls; a pair of opposing elements which extend between the sidewalls and are mounted for rotation about a common first axis orthogonal to the sidewalls; a first actuator means for moving a first of the elements about the f
1. A vectorable variable area nozzle comprising:a pair of fixed parallel sidewalls; a pair of opposing elements which extend between the sidewalls and are mounted for rotation about a common first axis orthogonal to the sidewalls; a first actuator means for moving a first of the elements about the first axis, and a second actuator means for moving a second of the elements about the first axis, to define a convergent nozzle section; a pair of opposing flaps extending between the sidewalls downstream of the opposing elements, each of said flaps being mounted for rotation relative to an adjacent one of the elements at the downstream end of said adjacent element, a first of said flaps being mounted for rotation about a second axis orthogonal to the sidewalls and a second of said flaps being mounted for rotation about a third axis orthogonal to the sidewalls, the respective axis of rotation of each flap being situated between upstream and downstream ends of the flap; a third actuator means for moving the first of the flaps about the second axis, and a fourth actuator means for moving the second of the flaps about the third axis, to define a divergent nozzle section. 2. A vectorable variable area nozzle comprising:a pair of fixed parallel sidewalls; a pair of opposing elements which extend between the sidewalls and are mounted for rotation about a common first axis orthogonal to the sidewalls, inner faces of the opposed elements being cylindrical sections about the common first axis of rotation; a first actuator means for moving a first of the elements about the first axis, and a second actuator means for moving a second of the elements about the first axis, to define a convergent nozzle section; a pair of opposing flaps extending between the sidewalls downstream of the opposing elements, each of said flaps being mounted for rotation relative to an adjacent one of the elements at the downstream end of said adjacent element, a first of said flaps being mounted for rotation about a second axis orthogonal to the sidewalls and a second of said flaps being mounted for rotation about a third axis orthogonal to the sidewalls; a third actuator means for moving the first of the flaps about the second axis, and a fourth actuator means for moving the second of the flaps about the third axis, to define a divergent nozzle section. 3. A vectorable variable area nozzle comprising:a pair of fixed parallel sidewalls; a pair of opposing elements which extend between the sidewalls and are mounted for rotation about a common first axis orthogonal to the sidewalls; a first actuator means for moving a first of the elements about the first axis, and a second actuator means for moving a second of the elements about the first axis, to define a convergent nozzle section; a pair of opposing flaps extending between the sidewalls downstream of the opposing elements, each of said flaps being mounted for rotation relative to an adjacent one of the elements at the downstream end of said adjacent element, a first of said flaps being mounted for rotation about a second axis orthogonal to the sidewalls and a second of said flaps being mounted for rotation about a third axis orthogonal to the sidewalls; a third actuator means for moving the first of the flaps about the second axis, and a fourth actuator means for moving the second of the flaps about the third axis, to define a divergent nozzle section; the third actuator means being attached to the first of the elements and the fourth actuator means being attached to the second of the elements. 4. A nozzle as claimed in claim 3, wherein the second axis is fixed in relation to the first of the elements and the third axis is fixed in relation to the second of by the elements.5. A nozzle as claimed in claim 3, wherein the flaps are rotatable about their respective axes to vector thrust produced by the nozzle.6. A method of vectoring a vectorable variable area nozzle, which nozzle comprises:a pair of fixed parallel sidewalls; a pair of opposing elements which extend between the sidewalls and are mounted for rotation about a common first axis orthogonal to the sidewalls; a first actuator means for moving a first of the elements about the first axis, and a second actuator means for moving a second of the elements about the first axis, to define a convergent nozzle section; a pair of opposing flaps extending between the sidewalls downstream of the opposing elements, each of said flaps being mounted for rotation relative to an adjacent one of the elements at the downstream end of said adjacent element, a first of said flaps being mounted for rotation about a second axis orthogonal to the sidewalls and a second of said flaps being mounted for rotation about a third axis orthogonal to the sidewalls, the respective axis of rotation of each flap being situtated between upstream and downstream ends of the flap; a third actuator means for moving the first of the flaps about the second axis, and a fourth actuator means for moving the second of the flaps about the third axis, to define a divergent nozzle section; said method comprising energising the first and second actuator means to rotate the first and second elements about the first axis to vector thrust produced by the nozzle independently of altering the throat area, exit area or divergence angle of the nozzle, and further comprising energising the third and fourth actuator means to rotate the first and second flaps about the second and third axes, respectively, to alter at least one of the throat area, exit area and divergence angle of the nozzle independently of vectoring the thrust produced by the nozzle. 7. A method as claimed in claim 6, wherein the first and second actuator means are energised in opposing senses to rotate the first and second elements in the same sense about the first axis to vector thrust produced by the nozzle independently of altering the throat area, exit area or divergence angle of the nozzle.8. A method as claimed in claim 7, wherein the first and second actuator means are also energised in the same sense to rotate the first and second elements in opposing senses about the first axis to alter the throat area, exit area and divergence angle of the nozzle independently of vectoring the thrust produced by the nozzle.9. A method as claimed in claim 8, wherein said exit area and divergence angle are altered in one sense and said throat area is altered in an opposite sense.10. A method as claimed in claim 6, wherein the third and fourth actuator means are energised in the same sense to rotate the first and second flaps in opposing senses about the second and third axes, respectively, to alter the throat area, exit area and divergence angle independently of vectoring the thrust produced by the nozzle.11. A method as claimed in claim 10, wherein said exit area and divergence angle are altered in one sense and said throat area is altered in an opposite sense.12. A method as claimed in claim 10, wherein the third and fourth actuator means are also energised in opposing senses to rotate the first and second flaps in the same sense about the second and third axes, respectively, to vector thrust produced by the nozzle independently of altering the throat area, exit area or divergence angle of the nozzle.13. A method as claimed in claim 6, wherein one or more of the following steps are performed:(a) the first and second actuator means are energised in the same sense to rotate the first and second elements in opposing senses about the first axis to alter the throat area, exit area and divergence angle of the nozzle independently of vectoring the thrust produced by the nozzle; (b) the first and second actuator means are energised in opposing senses to rotate the first and second elements in the same sense about the first axis to vector thrust produced by the nozzle independently of altering throat area, exit area or divergence angle of the nozzle; (c) the third and fourth actuator means are energised in the same sense to rotate the first and second flaps in opposing senses about the second and third axes, respectively, to alter the throat area, exit area and divergence angle independently of vectoring the thrust produced by the nozzle; and (d) the third and fourth actuator means are energised in opposing senses to rotate the first and second flaps in the same sense about the second and third axes, respectively, to vector thrust produced by the nozzle independently of altering throat area, exit area or divergence angle of the nozzle.
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