Oscillating vane actuator apparatus and method for active flow control
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01F-001/28
G01F-001/20
출원번호
US-0201387
(2005-08-11)
발명자
/ 주소
Powell,Arthur Gregory
출원인 / 주소
The Boeing Company
대리인 / 주소
Baker &
인용정보
피인용 횟수 :
12인용 특허 :
5
초록▼
An oscillating vane actuator for active control of fluid flow over a surface includes a pivoted vane surrounded by a wedge-shaped chamber, and first and second conduits with openings adjacent the surface. The actuator also includes a rotating shaft with a connecting rod to actuate the vane in a osc
An oscillating vane actuator for active control of fluid flow over a surface includes a pivoted vane surrounded by a wedge-shaped chamber, and first and second conduits with openings adjacent the surface. The actuator also includes a rotating shaft with a connecting rod to actuate the vane in a oscillatory manner. As the vane travels in one direction, fluid is forced out from the chamber through the first conduit and opening into the fluid stream adjacent the surface, while fluid is simultaneously drawn in through the second opening and conduit into the opposite side of the chamber. Similarly, when the vane travels in the opposite direction, fluid is forced out through the second conduit and opening into the fluid stream adjacent the surface, while fluid is simultaneously drawn in through the first opening and conduit.
대표청구항▼
What is claimed is: 1. An actuator for displacing a fluid to alter flow characteristics near a surface, comprising: a vane configured to displace the fluid, the vane having a first face and a second face; a casing configured to at least partially surround the vane, the casing having a first side to
What is claimed is: 1. An actuator for displacing a fluid to alter flow characteristics near a surface, comprising: a vane configured to displace the fluid, the vane having a first face and a second face; a casing configured to at least partially surround the vane, the casing having a first side toward the first face of the vane and a second side toward the second face of the vane; and a first orifice that opens into the casing from the first side of the casing, wherein the fluid is expelled from the first orifice when the vane travels toward the first side of the casing, and the fluid is drawn into the first orifice when the vane travels toward the second side of the casing. 2. The actuator of claim 1, further comprising a first conduit configured to convey the fluid into and out from the casing by way of the first orifice, the first conduit having an opposite first opening that opens into a fluid stream adjacent the surface. 3. The actuator of claim 2, wherein the first opening is configured to direct the expelled fluid generally toward a direction of flow of the fluid stream. 4. The actuator of claim 2, further comprising: an intake conduit that branches off from the first conduit, the intake conduit having a normal intake opening that opens into the fluid stream adjacent the surface upstream of the first opening; and a one-way valve installed in the intake conduit to inhibit fluid flow out through the intake opening, and to allow fluid flow into the intake opening and through the intake conduit to the first conduit. 5. The actuator of claim 1, further comprising a second orifice that opens into the casing from the second side of the casing, wherein the fluid is expelled from the first orifice and drawn into the second orifice when the vane travels toward the first side of the casing, and the fluid is drawn into the first orifice and expelled from the second orifice when the vane travels toward the second side of the casing. 6. The actuator of claim 5, further comprising: a first conduit configured to convey the fluid into and out from the casing by way of the first orifice, the first conduit having an opposite first opening that opens into a fluid stream adjacent the surface; and a second conduit configured to convey the fluid into and out from the casing by way of the second orifice, the second conduit having an opposite second opening that opens into the fluid stream adjacent the surface. 7. The actuator of claim 6, wherein the first opening and the second opening are configured to direct the expelled fluid generally toward a direction of flow of the fluid stream. 8. The actuator of claim 1, wherein the vane and the casing are further configured to have a substantially fluid-tight clearance between a perimeter of the vane and an inner wall of the casing. 9. The actuator of claim 1, further comprising: a drive shaft operably coupled to the vane, wherein the drive shaft is configured to transfer a motive force to actuate the vane in order to move the vane in an oscillating motion; and a rotational actuator coupled to the drive shaft and configured to rotate the drive shaft. 10. The actuator of claim 1, further comprising a pivot, wherein the casing defines an internal wedge-shaped chamber and the pivot is coupled to the casing and the vane is coupled to the pivot such that the vane can rotate within the chamber in an arc about a longitudinal axis of the vane. 11. The actuator of claim 10, wherein the casing has a first end and a second end, the actuator further comprising: a curved slot in the first end of the casing; a drive shaft operably coupled to the vane, wherein the drive shaft is configured to transfer a motive force to actuate the vane in order to move the vane in an oscillating motion; a rotational actuator coupled to the drive shaft and configured to rotate the drive shaft; a connecting rod rotatably coupled to the drive shaft at a radial distance from a central axis of the drive shaft and rotatably coupled to the vane through the curved slot at an offset distance from the pivot, wherein the drive shaft transfers the motive force to actuate the vane by way of the connecting rod; and a sliding seal slidably coupled to the curved slot, configured to substantially inhibit the fluid from passing into or out from the chamber through the curved slot, and through which the connecting rod can be coupled to the drive shaft. 12. The actuator of claim 10, wherein the casing has a first end and a second end, the actuator further comprising: a drive shaft operably coupled to the vane, wherein the drive shaft is configured to transfer a motive force to actuate the vane in order to move the vane in an oscillating motion; a rotational actuator coupled to the drive shaft and configured to rotate the drive shaft; an extension that axially extends from the pivot through the first end of the casing; a linkage arm fixedly coupled to the extension; and a connecting rod rotatably coupled to the drive shaft at a radial distance from the central axis of the drive shaft and rotatably coupled to the linkage arm, wherein the drive shaft transfers the motive force to actuate the vane by way of the connecting rod and the linkage arm. 13. The actuator of claim 1, further comprising an aerodynamic surface configured to allow an adjacent fluid stream to flow with a velocity relative to the aerodynamic surface. 14. The actuator of claim 13, wherein the aerodynamic surface comprises at least part of a chord of an airfoil. 15. An actuator for displacing a fluid to alter flow characteristics near a surface, comprising: means for displacing the fluid; means for at least partially surrounding the displacing means, the surrounding means having a second side and a first side; and first means for accessing the first side of the surrounding means, wherein the fluid is expelled from the first accessing means when the displacing means travels toward the first side of the surrounding means, and the fluid is drawn into the first accessing means when the displacing means travels toward the second side of the surrounding means. 16. The actuator of claim 15, further comprising first means for conveying the fluid into and out from the surrounding means by way of the first accessing means, the first conveying means having an opposite first means for opening into a fluid stream adjacent the surface. 17. The actuator of claim 16, wherein the first opening means is configured to direct the expelled fluid generally toward a direction of the flow of the fluid stream. 18. The actuator of claim 16, further comprising: intake means for conveying the fluid into the first conveying means, the intake means having normal means for opening into the fluid stream upstream of the first opening; and one-way flow control means installed in the intake means to inhibit fluid flow out through the normal opening means, and to allow fluid flow into the normal opening means and through the intake means to the first conveying means. 19. The actuator of claim 15, further comprising second means for accessing a second side of the surrounding means, wherein the fluid is expelled from the first accessing means and drawn into the second accessing means when the displacing means travels toward the first side of the surrounding means, and the fluid is drawn into the first accessing means and expelled from the second accessing means when the displacing means travels toward the second side of the surrounding means. 20. The actuator of claim 19, further comprising: first means for conveying the fluid into and out from the surrounding means by way of the first accessing means, the first conveying means having an opposite first means for opening into a fluid stream adjacent the surface; and second means for conveying the fluid into and out from the surrounding means by way of the second accessing means, the second conveying means having an opposite second means for opening into a fluid stream adjacent the surface. 21. The actuator of claim 20, wherein the first and second opening means are configured to direct the expelled fluid generally toward a direction of the flow of the fluid stream. 22. The actuator of claim 15, wherein the displacing means and the surrounding means are further configured to have a substantially fluid-tight clearance between a perimeter of the displacing means and an inner wall of the surrounding means. 23. The actuator of claim 15, further comprising: means for driving operably coupled to the displacing means, wherein the driving means is configured to transfer a motive force to actuate the vane in order to move the vane in an oscillating motion; and rotational means for actuating coupled to the driving means and configured to rotate the driving means. 24. The actuator of claim 15, further comprising means for pivoting, wherein the surrounding means defines an internal wedge-shaped chamber and the pivoting means is coupled to the surrounding means and the displacing means is coupled to the pivoting means such that the displacing means can rotate within the chamber in an arc about a longitudinal axis of the displacing means. 25. The actuator of claim 24, wherein the surrounding means has a first end and a second end, the actuator, further comprising: curved means for penetrating the first end of the surrounding means; means for driving operably coupled to the displacing means, wherein the driving means is configured to transfer a motive force to actuate the vane in order to move the vane in an oscillating motion; rotational means for actuating coupled to the driving means and configured to rotate the driving means; means for connecting rotatably coupled to the driving means at a radial distance from a central axis of the driving means and rotatably coupled to the displacing means through the penetrating means at an offset distance from the pivoting means, wherein the driving means transfers the motive force to actuate the displacing means by way of the connecting means; and means for sealing slidably coupled to the penetrating means, configured to substantially inhibit the fluid from passing into or out from the surrounding means through the penetrating means, and through which the connecting rod can be coupled to the drive shaft. 26. The actuator of claim 24, wherein the surrounding means has a first end and a second end, the actuator further comprising: means for driving operably coupled to the displacing means, wherein the driving means is configured to transfer a motive force to actuate the vane in order to move the vane in an oscillating motion; rotational means for actuating coupled to the driving means and configured to rotate the driving means; means for axially extending the pivoting means through the first end of the surrounding means; means for linking fixedly coupled to the extending means; and means for connecting rotatably coupled to the driving means at a radial distance from the central axis of the driving means and rotatably coupled to the linking means, wherein the driving means transfers the motive force to actuate the displacing means by way of the connecting means and the linking means. 27. The actuator of claim 15, further comprising aerodynamic surface means for allowing an adjacent fluid stream to flow with a velocity relative to the aerodynamic surface means. 28. The actuator of claim 27, wherein the aerodynamic surface means comprises at least part of a means for creating aerodynamic lift. 29. A method of displacing a fluid to alter flow characteristics near a surface, comprising: displacing the fluid using a vane in a casing configured to at least partially surround the vane; conveying the fluid out from a first side of the casing and expelling the fluid into a fluid stream adjacent the surface when the vane travels toward the first side of the casing; and drawing the fluid from the fluid stream and conveying the fluid into the first side of the casing when the vane travels toward a second side of the casing. 30. The method of claim 29, further comprising: conveying the fluid out from the second side of the casing and expelling the fluid into the fluid stream when the vane travels toward the second side of the casing; and drawing the fluid from the fluid stream and conveying the fluid into the second side of the casing when the vane travels toward the first side of the casing. 31. The method of claim 29, wherein the fluid is expelled generally toward a direction of the flow of the fluid stream.
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이 특허에 인용된 특허 (5)
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