KR20180114089A - 만곡된 후면을 사용하여 공동 유동 진동 및 음향 부하를 억제하는 방법 및 공동 - Google Patents

만곡된 후면을 사용하여 공동 유동 진동 및 음향 부하를 억제하는 방법 및 공동 Download PDF

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Publication number
KR20180114089A
KR20180114089A KR1020187025346A KR20187025346A KR20180114089A KR 20180114089 A KR20180114089 A KR 20180114089A KR 1020187025346 A KR1020187025346 A KR 1020187025346A KR 20187025346 A KR20187025346 A KR 20187025346A KR 20180114089 A KR20180114089 A KR 20180114089A
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KR
South Korea
Prior art keywords
cavity
longitudinal axis
cross
flow
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
KR1020187025346A
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English (en)
Korean (ko)
Inventor
Jacob Cohen
수디프 다스
Original Assignee
Jacob Cohen
제이에스에이씨 엘엘씨
수디프 다스
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Publication date
Application filed by Jacob Cohen, 제이에스에이씨 엘엘씨, 수디프 다스 filed Critical Jacob Cohen
Publication of KR20180114089A publication Critical patent/KR20180114089A/ko
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/002—Influencing flow of fluids by influencing the boundary layer
    • F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
    • F15D1/003—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/002—Influencing flow of fluids by influencing the boundary layer
    • F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
    • F15D1/003—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions
    • F15D1/005—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions in the form of dimples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/001—Devices not provided for in the groups B64C25/02 - B64C25/68
    • B64C2025/003—Means for reducing landing gear noise, or turbulent flow around it, e.g. landing gear doors used as deflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D1/00—Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight
    • B64D1/02—Dropping, ejecting, or releasing articles
    • B64D1/04—Dropping, ejecting, or releasing articles the articles being explosive, e.g. bombs
    • B64D1/06—Bomb releasing; Bomb doors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2087—Means to cause rotational flow of fluid [e.g., vortex generator]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
KR1020187025346A 2016-02-02 2017-02-02 만곡된 후면을 사용하여 공동 유동 진동 및 음향 부하를 억제하는 방법 및 공동 Withdrawn KR20180114089A (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201662289936P 2016-02-02 2016-02-02
US62/289,936 2016-02-02
PCT/IL2017/050127 WO2017134666A1 (en) 2016-02-02 2017-02-02 Method and cavity for suppression of cavity flow oscillations and acoustic loads using curved rear face

Publications (1)

Publication Number Publication Date
KR20180114089A true KR20180114089A (ko) 2018-10-17

Family

ID=58428326

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020187025346A Withdrawn KR20180114089A (ko) 2016-02-02 2017-02-02 만곡된 후면을 사용하여 공동 유동 진동 및 음향 부하를 억제하는 방법 및 공동

Country Status (5)

Country Link
US (1) US10823207B2 (https=)
EP (1) EP3411598B1 (https=)
JP (1) JP6917030B2 (https=)
KR (1) KR20180114089A (https=)
WO (1) WO2017134666A1 (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10876732B2 (en) * 2016-10-19 2020-12-29 Gloyer-Taylor Laboratories Llc Scalable acoustically-stable combustion chamber and design methods
JP6691896B2 (ja) * 2017-08-25 2020-05-13 三菱重工業株式会社 航空機
CA3037923C (en) 2018-03-29 2025-12-09 Bombardier Inc. System and method for improving the operation of an aircraft
TR202022407A1 (tr) * 2020-12-30 2022-07-21 Tusas Tuerk Havacilik Ve Uzay Sanayii Anonim Sirketi Bir kavite.
FR3120699B1 (fr) * 2021-03-10 2023-03-17 Airbus Operations Sas Dispositif de mesure acoustique

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578264A (en) 1968-07-09 1971-05-11 Battelle Development Corp Boundary layer control of flow separation and heat exchange
US4718620A (en) 1984-10-15 1988-01-12 Braden John A Terraced channels for reducing afterbody drag
US5340054A (en) 1991-02-20 1994-08-23 The United States Of America As Represented By The Secretary Of The Navy Suppressor of oscillations in airframe cavities
US5699981A (en) 1996-03-18 1997-12-23 The United States Of America As Represented By The Secretary Of The Air Force Aircraft cavity acoustic resonance suppression system
US6050527A (en) 1997-12-19 2000-04-18 The Boeing Company Flow control device to eliminate cavity resonance
US6446904B1 (en) 2001-10-05 2002-09-10 The United States Of America As Represented By The Secretary Of The Air Force Aircraft weapons bay high frequency acoustic suppression apparatus
US6739554B1 (en) * 2003-06-02 2004-05-25 The United States Of America As Represented By The Secretary Of The Air Force Aircraft weapons bay acoustic resonance suppression system
US7322195B2 (en) 2005-04-19 2008-01-29 United Technologies Corporation Acoustic dampers
US8684040B2 (en) * 2007-05-25 2014-04-01 The Regents Of The University Of Michigan Reduction of vortex induced forces and motion through surface roughness control
NL1035216C2 (nl) * 2007-07-24 2009-01-27 Kick Off Ltd Wrijvingsweerstand reducerende laag en werkwijze voor de vervaardiging daarvan.
ES2326356B1 (es) * 2008-03-31 2010-07-13 Maria Desamparados Segura Mecho Elemento impulsor aerodinamico.
DE102008059536A1 (de) 2008-11-29 2010-06-02 Eugen Radtke Oberflächenstruktur
JP3165679U (ja) * 2010-11-18 2011-01-27 瑞麟 林 流体に対する抵抗体
GB201213451D0 (en) * 2012-07-27 2012-09-12 Imp Innovations Ltd Drag reduction

Also Published As

Publication number Publication date
US10823207B2 (en) 2020-11-03
EP3411598A1 (en) 2018-12-12
EP3411598B1 (en) 2019-08-21
US20190040883A1 (en) 2019-02-07
JP2019510174A (ja) 2019-04-11
WO2017134666A1 (en) 2017-08-10
JP6917030B2 (ja) 2021-08-11

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Date Code Title Description
PA0105 International application

Patent event date: 20180831

Patent event code: PA01051R01D

Comment text: International Patent Application

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination