Device to reduce flow induced pressure oscillations in open cavities
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0513025
(1974-10-08)
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발명자
/ 주소 |
- Maurer Otto F. (Dayton OH)
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출원인 / 주소 |
- The United States of America as represented by the Secretary of the Air Force (Washington DC 06)
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인용정보 |
피인용 횟수 :
8 인용 특허 :
0 |
초록
▼
A combined air flow deflector and diffuser assembly including a main flow deflector vane, a deflector base plate mountable adjacent the trailing edge of an open bomb bay or other cavity of a bomber aircraft, aerospace or other vehicle, and a plurality of support pylons interconnected between and sup
A combined air flow deflector and diffuser assembly including a main flow deflector vane, a deflector base plate mountable adjacent the trailing edge of an open bomb bay or other cavity of a bomber aircraft, aerospace or other vehicle, and a plurality of support pylons interconnected between and supporting the deflector vane in space relation to the base plate immediately behind the bomb bay or other cavity-trailing edge in the path of, and diverting the airstream away from the vehicle body to thereby partially stabilize the turbulent flow at the shield area or airstream flow adjacent the cavity entrance and, simultaneously therewith, induce a substantial decrease of the excessive pressure oscillations that would otherwise occur within the cavity from the air stream flow passing the open cavity. Additional significant reduction primarily in the cavity pressure oscillations results from the formation of a series of divergent, air flow diffusing slots respectively between the base plate and flow deflector vane, and the support pylons and through which a portion of the air stream flows.
대표청구항
▼
In an aircraft, aerospace or other vehicle having a bomb bay or other cavity for containing weapons or other stores, and door or other enclosure means openable during vehicular operation to expose the open cavity to the relatively fast moving air stream; a combined air flow deflector and diffuser de
In an aircraft, aerospace or other vehicle having a bomb bay or other cavity for containing weapons or other stores, and door or other enclosure means openable during vehicular operation to expose the open cavity to the relatively fast moving air stream; a combined air flow deflector and diffuser device for reducing excessive pressure oscillations being otherwise induced in and near the open cavity by the inherent unsteady nature of the relatively fast moving air stream flow past the said cavity, as is manifested by the normal considerable inward and outward movement of the said flow relative to the said open cavity when said device is not being utilized; said device comprising; a first, main flow diverter element located in a predetermined spaced relation from the body of said vehicle directly in the path of, and automatically operative to divert a substantial portion of the air stream away from its normal entry into, and thus reducing the intensity of the pressure oscillations both at the entry to, and within the open cavity; second, main flow diverter element-mounting means for attaching said first, flow diverter element in the said predetermined spaced relation from the aircraft fuselage or other vehicular body at a predetermined position in alignment with a location preferably adjacent or substantially adjacent the trailing edge of the open cavity; and third, flow diffuser means comprising divergent slotted means inherently incorporated in said combined air flow diverTer and diffuser device between said first, flow diverter element and said mounting means, and further disposed in the path of, and automatically acting to reduce the velocity of the incoming air stream by the diffused flow of a significant, additional portion of the air stream flowing past the open cavity through the said divergent slotted means to thereby further somewhat reduce the inherent turbulence and circulation of air that would otherwise normally occur throughout the interior of the open cavity, and, simultaneously therewith, effecting the substantial elimination of the excessive pressure oscillations resulting at the shield area and within the said open cavity from the inherent and substantial inwardly and outwardly-oriented movements normally tending to occur within, and causing the unsteady flow of the air stream during its movement past the open cavity.
이 특허를 인용한 특허 (8)
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Burdsall ; II Charles Wesley ; Volk John Alan, Adaptive deployable ramp for suppression of aircraft weapons bay acoustic loads.
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McNay Curtis E. (Wichita KS), Aircraft open viewing port configuration.
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Michael J. Stanek, Aircraft weapons bay high frequency acoustic suppression apparatus.
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Haslund Ralph L. (Mercer Island WA), Apparatus and method for providing an aero-optical interface.
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Hebert Leonard J. ; Miller Wendell R. ; Nesbitt Eric H. ; Piro Jerry ; Sangwin Michael L., Flow control device to eliminate cavity resonance.
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Taylor, Nigel John; Newby, Benjamin James, Structure for controlling the aero-acoustic environment in an aircraft weapons bay.
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Stol Israel (Monroeville PA), Ultrasonic excitation of underwater torpedoes for enhancing maneuverability, speed and targeting accuracy.
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Victor Paul F. (Redmond WA), Wing trailing edge air dam.
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