[특허]Method of and apparatus for enhancing Coanda flow attachment over a wing and flap surface

[미국특허] Method of and apparatus for enhancing Coanda flow attachment over a wing and flap surface 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64C-021/00
출원번호	US-0608667 (1975-08-28)
발명자 / 주소	Hirt William J. (Bellevue WA) Grotz Charles A. (Seattle WA)
출원인 / 주소	The Boeing Company (Seattle WA 02)
인용정보	피인용 횟수 : 32 인용 특허 : 0

초록 ▼

A method of enhancing Coanda flow attachment over a wing and flap surface of an upper surface blowing aircraft comprising the step of directing the jet exhaust flow or stream toward regions wherein the exhaust flow separates from the wing and flap surface so as to create an outward velocity component which prevents ambient air from flowing in and under the exhaust from the sides of the exhaust flow and causing such separation is disclosed. The method comprises the further step of creating vortices also having outward velocity components on the wing and flap surface. The outward velocity components of the vortices further increases the sidewise velocity component on the wing surface. In addition, the rotational velocity components of the vortices scrub the boundary layer air from the flap surface to further promote flow attachment. Apparatus suitable for carrying out the method and comprising a plurality of airfoil shaped vortex generating vanes located between the engine exhaust and the trailing edge of the flap is also disclosed. The vortex generating vanes direct the exhaust stream toward the separation regions and create the outward velocity component vortices.

대표청구항 ▼

A method of providing enhanced Coanda flow attachment to the upper wing and flap surface of an upper surface blowing aircraft wherein a jet engine exhaust stream passes over said upper wing and flap surface, said method comprising the steps of: vertically thinning said jet exhaust stream, prior to said exhaust stream passing over said upper wing and flap surface in a manner such that a downward thrust component, adapted to augment the aerodynamic lift of said wing, occurs when the flap portion of said wing is extended; and, directing, from points on said wing and flap surface located substantially downstream from the region whereat said vertically thinned jet exhaust stream is thinned, said thinned exhaust stream spanwise across said wing and flap surface toward regions whereat said thinned exhaust stream tends to separate from said wing and flap surface when said flap is extended, so as to create outward velocity components that prevent ambient air from flowing in under the thinned exhaust stream from the sides of the thinned exhaust stream. In an upper surface blowing type aircraft wherein the exhaust stream of a jet engine is vertically thinned when a flap of an associated wing and flap structure is extended, and the thinned exhaust stream is directed to flow over said wing and flap surface, said thinned exhaust stream adhering to said wing and flap surface when said flap is so extended in a manner such that a downward thrust component, adapted to augment the aerodynamic lift of said wing, occurs when said flap is extended, the improvement comprising horizontal, spanwise directing means, mounted in said thinned exhaust stream and on said wing and flap surface substantially downstream of the region whereat said thinned exhaust stream is thinned for horizontally directing a portion of said thinned exhaust stream spanwise toward regions whereat said thinned exhaust stream tends to separate from said wing and flap surface.

이 특허를 인용한 특허 (32) 인용/피인용 타임라인 분석

Grove,Graham Bond, Aerofoil arrangement.
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Fol, Thierry; Defos, Marjorie, Aircraft comprising a device for reducing the induced drag.
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Manley, David J.; Kutzmann, Aaron J.; Gregg, III, Robb; Vassberg, John C.; Gonzales, Antonio B.; Hollowell, Steve; Harrison, Neal; Lawson, Edward; Kismarton, Max; Lutke, Kevin, Aircraft configuration utilizing fuselage, wing, empennage, and exhaust flow control devices.
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Schmetzer William M. (15740 Sherman Way Van Nuys CA 91406), Aircraft with thrust and lift augmenting airfoil.
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Cummings, Darold B.; Kutzmann, Aaron J.; Droney, Christopher K., Aircraft with thrust vectoring for switchably providing upper surface blowing.
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Kismarton, Max; Kutzmann, Aaron J.; Lutke, Kevin, Blended wing aircraft.
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Kismarton, Max; Kutzmann, Aaron J.; Lutke, Kevin, Blended wing aircraft.
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Kismarton, Max; Kutzmann, Aaron J.; Lutke, Kevin, Blended wing aircraft.
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Emunds, Rolf, Casing for a lifting aid.
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Harrison, Neal; Vassberg, John C., Controllable upper surface blown nozzle.
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Viets Hermann (144 Scenery Dr. Morgantown WV 26505), Directional control of engine exhaust thrust vector in a STOL-type aircraft.
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Evulet, Andrei, Fluidic propulsive system and thrust and lift generator for aerial vehicles.
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Shmilovich, Arvin; Yadlin, Yoram; Gregg, III, Robert D.; Clark, Roger W., Method and apparatus for enhancing engine-powered lift in an aircraft.
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Shmilovich, Arvin; Yadlin, Yoram, Method and apparatus for robust lift generation.
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Shmilovich, Arvin; Yadlin, Yoram, Method and apparatus for robust lift generation.
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Shmilovich, Arvin; Yadlin, Yoram, Methods and apparatus for robust lift generation.
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Domel, Neal D.; Charlton, Eric F.; Miller, Daniel N., Minimally intrusive wingtip vortex wake mitigation using microvane arrays.
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Bennett John A. (Marietta GA) Englar Robert J. (Marietta GA) Thomas Andrew S. W. (Marietta GA), Pneumatic aerodynamic control surface.
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Shmilovich, Arvin; Yadlin, Yoram; Clark, Roger W.; Gregg, III, Robert D., Propulsion system and method for efficient lift generation.
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Manley, David J.; Grip, Robert E., Shape-changing control surface.
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Janardan, Bangalore Ananthamurthy; Brausch, John Francis, Stub airfoil exhaust nozzle.
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Gregg, III, Robert D.; Kutzmann, Aaron J.; Manley, David J.; Vassberg, John C.; Harrison, Neal; Kismarton, Max, Swept-wing powered-lift aircraft.
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Gregg, III, Robert D; Kutzmann, Aaron J.; Manley, David J.; Vassberg, John C.; Harrison, Neal; Kismarton, Max, Swept-wing powered-lift aircraft.
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Shmilovich, Arvin; Yadlin, Yoram; Gregg, III, Robert D.; Clark, Roger W., Systems and methods for control of engine exhaust flow.
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Kawai, Ronald Tatsuji, Thrust vectoring system and method.
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Kismarton, Max; Kutzmann, Aaron J.; Lutke, Kevin, Twin-boom empennage.
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Kismarton, Max; Kutzmann, Aaron J.; Lutke, Kevin, Twin-boom empennage.
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Lawson, Edward; Kutzmann, Aaron J., Universal convergent nozzle and distinct nozzle aperture.
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Wang Timothy (Bellevue WA), Upper surface blown powered lift system.
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Wang Timothy (Bellevue WA), Upper surface blown powered lift system for aircraft.
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Wang Timothy (Bellevue WA), Upper surface blown powered lift system for aircraft.
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Bonnaud, Cyril; Hormiere, Arnaud, Vortex generator at hot gas output.
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[미국특허] Method of and apparatus for enhancing Coanda flow attachment over a wing and flap surface 원문보기