[특허]Noise absorption system having active acoustic liner

Noise absorption system having active acoustic liner 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-025/04
출원번호	US-0751544 (1996-11-15)
발명자 / 주소	Van Nostrand William C. Parente Charles A. Arcas Noe
출원인 / 주소	Northrop Grumman Corporation
대리인 / 주소	Anderson
인용정보	피인용 횟수 : 18 인용 특허 : 18

초록 ▼

The present invention is embodied in an aircraft engine noise absorption system having a resonator cavity for absorbing incident noise except for a residue noise signal having a predominant frequency, the system comprising an actuator providing an actuator acoustic signal, a noise sensor for sensing the predominant frequency, and a controller for setting the actuator acoustic signal to the predominant frequency and varying one of a phase and an amplitude of the actuator acoustic signal to decrease the residue noise signal.

대표청구항 ▼

[ What is claimed:] [1.] An aircraft engine noise absorption system having a resonator cavity for absorbing incident noise except for a residue noise signal having a predominant frequency, said system comprising:an actuator providing an actuator acoustic signal;a microphone mounted in said cavity for sensing said predominant frequency; anda controller for setting said actuator acoustic signal to said predominant frequency and varying one of a phase and an amplitude of said actuator acoustic signal to decrease said residue noise signal.

이 특허에 인용된 특허 (18)

Eriksson Larry J. (Madison WI) Allie Mark C. (Oregon WI) Hoops Richard H. (Stoughton WI), Active acoustic attenuation system for higher order mode non-uniform sound field in a duct.
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Kraft Robert E. (Cincinnati OH) Kontos Karen B. (Loveland OH), Active acoustic liner.
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Burdisso Ricardo (Blacksburg VA) Fuller Chris R. (Blacksburg VA) O\Brien Walter F. (Blacksburg VA) Thomas Russell H. (Blacksburg VA) Dungan Mary E. (Malden SC), Active control of aircraft engine inlet noise using compact sound sources and distributed error sensors.
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Pla Frederic G. (Schenectady NY), Active control of aircraft engine noise using vibrational inputs.
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Swinbanks Malcolm Alexander (Glasgow SC), Active control of sound waves.
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Gossman William (Silver Spring MD) Eatwell Graham (Cambridge GBX), Active high transmission loss panel.
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Gliebe Philip R. (Waynesville OH), Active low noise fan assembly.
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Pla Frederic G. (Clifton Park NY) Rajiyah Harindra (Clifton Park NY), Active noise control of aircraft engine discrete tonal noise.
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Pla Frederic G. (Nashotah WI) Rajiyah Harindra (Clifton Park NY), Active noise control using a tunable plate radiator.
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Pla Frederic G. (Clifton Park NY), Active noise control using an array of plate radiators and acoustic resonators.
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Pla Frederic G. (Schenectady NY) Rajiyah Harindra (Clifton Park NY) Renshaw Anthony A. (Albany NY) Hedeen Robert A. (Clifton Park NY), Active noise control using noise source having adaptive resonant frequency tuning through stiffness variation.
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Pla Frederic G. (Schenectady NY) Rajiyah Harindra (Clifton Park NY) Renshaw Anthony A. (Albany NY) Hedeen Robert A. (Clifton Park NY), Active noise control using noise source having adaptive resonant frequency tuning through variable ring loading.
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Kraft Robert E. (Cincinnati OH) Syed Asif A. (Loveland OH), Actively controlled acoustic treatment panel.
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Fuller Christopher R. (312 Reynolds St. Apt. 3 Blacksburg VA 24060), Apparatus and method for global noise reduction.
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Hersh Alan S. (10707 Overman Ave. Chatsworth CA 91311) Tso Jin (15036 Hesby St. Sherman Oaks CA 91403), Extended frequency range Helmholtz resonators.
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Bravo Sergio M. (2872 Tigertail Dr. Los Alamitos CA 90720), Gasoline containment systems with leak-resistant plastic fittings.
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Olsen Ronald F. ; Orzechowski Jeffrey M.,CAX, Jet engine fan noise reduction system utilizing electro pneumatic transducers.
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Sawyers Craig G. (St. Neots GB2) Edge Gordon M. (Nr. Saffron Walden GB2), Noise attenuation.
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이 특허를 인용한 특허 (18)

Liu, Zheji, Acoustic liner and a fluid pressurizing device and method utilizing same.
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Jones, Michael G.; Grady, Joseph E.; Kiser, James D.; Miller, Christopher; Heidmann, James D., Acoustic liners for turbine engines.
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Jones, Michael G; Grady, Joseph E; Kiser, James D.; Miller, Christopher; Heidmann, James D., Acoustic liners for turbine engines.
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Gandhi, Umesh N., Adjustable sound panel with electroactive actuators.
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Henning Strehlow DE; Peter Jaenker DE; Rudolf Maier DE, Apparatus for suppressing structure borne noises.
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Berkhoff, Arthur Perry, Device for actively reducing sound transmission, and panel comprising such device.
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Liu, Zheji, Double layer acoustic liner and a fluid pressurizing device and method utilizing same.
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Liu, Zheji, Gas compression apparatus and method with noise attenuation.
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Busekros, Armin; Kramer, Thomas; Fischer, Jochem; Hoffmann, Juergen, Gas turbine air intake manifold controllably changing a mechnical rigidity of the walls of said intake manifold.
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Bouchard, Richard; Girard, Gaetan; Pronovost, Christian, Gas turbine exhaust case with acoustic panels.
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Vuillemin, Alexandre Alfred Gaston, Method of processing acoustic waves emitted at the outlet of a turbo engine of an aircraft with a dielectric-barrier discharge device and aircraft comprising such a device.
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Hermiller, Jason Michael; Maddux, Michael, Morphing resonators for adaptive noise reduction.
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Hermiller, Jason Michael; Maddux, Michael Richard, Morphing resonators for adaptive noise reduction.
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Liu, Zheji, Multi-degree of freedom resonator array.
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Hosny,Diaa; Ahmad,Samir S., Noise control.
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Beltman, Willem; Gullbrand, Jessica, Quiet system cooling using coupled optimization between integrated micro porous absorbers and rotors.
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Tobik,Steven E.; Sattinger,Stanley S.; Ohri,Rajeev; Koenig,Michael H., Resonator performance by local reduction of component thickness.
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Hobelsberger, Maximilian Hans, Tunable active sound absorbers.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Noise absorption system having active acoustic liner 원문보기