GB2555086B - Cavity acoustic tones supression - Google Patents

Cavity acoustic tones supression Download PDF

Info

Publication number
GB2555086B
GB2555086B GB1617217.3A GB201617217A GB2555086B GB 2555086 B GB2555086 B GB 2555086B GB 201617217 A GB201617217 A GB 201617217A GB 2555086 B GB2555086 B GB 2555086B
Authority
GB
United Kingdom
Prior art keywords
supression
acoustic tones
cavity acoustic
cavity
tones
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.)
Active
Application number
GB1617217.3A
Other versions
GB2555086A (en
GB201617217D0 (en
Inventor
Euan Patience David
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems PLC
Original Assignee
BAE Systems PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BAE Systems PLC filed Critical BAE Systems PLC
Priority to GB1617217.3A priority Critical patent/GB2555086B/en
Publication of GB201617217D0 publication Critical patent/GB201617217D0/en
Priority to EP17777370.2A priority patent/EP3526117A1/en
Priority to US16/337,949 priority patent/US11407497B2/en
Priority to PCT/GB2017/052951 priority patent/WO2018069671A1/en
Publication of GB2555086A publication Critical patent/GB2555086A/en
Application granted granted Critical
Publication of GB2555086B publication Critical patent/GB2555086B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F15D1/10—Influencing flow of fluids around bodies of solid material
    • F15D1/12—Influencing flow of fluids around bodies of solid material by influencing the boundary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/40—Sound or heat insulation, e.g. using insulation blankets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • 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
    • 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
    • F15D1/10—Influencing flow of fluids around bodies of solid material
    • 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
    • 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/20—Reflecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
GB1617217.3A 2016-10-11 2016-10-11 Cavity acoustic tones supression Active GB2555086B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1617217.3A GB2555086B (en) 2016-10-11 2016-10-11 Cavity acoustic tones supression
EP17777370.2A EP3526117A1 (en) 2016-10-11 2017-10-02 Cavity acoustic tones suppression
US16/337,949 US11407497B2 (en) 2016-10-11 2017-10-02 Cavity acoustic tones suppression
PCT/GB2017/052951 WO2018069671A1 (en) 2016-10-11 2017-10-02 Cavity acoustic tones suppression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1617217.3A GB2555086B (en) 2016-10-11 2016-10-11 Cavity acoustic tones supression

Publications (3)

Publication Number Publication Date
GB201617217D0 GB201617217D0 (en) 2016-11-23
GB2555086A GB2555086A (en) 2018-04-25
GB2555086B true GB2555086B (en) 2021-10-13

Family

ID=57610476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1617217.3A Active GB2555086B (en) 2016-10-11 2016-10-11 Cavity acoustic tones supression

Country Status (1)

Country Link
GB (1) GB2555086B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112623196A (en) * 2020-12-29 2021-04-09 中国航空工业集团公司西安飞机设计研究所 Cavity noise control method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934846A (en) * 1974-10-08 1976-01-27 The United States Of America As Represented By The Secretary Of The Air Force Device to reduce flow induced pressure oscillations in open cavities
USH501H (en) * 1987-02-27 1988-08-02 The United States Of America As Represented By The Secretary Of The Army Apparatus for acoustical quieting of a cavity
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
JP2002205639A (en) * 2001-01-10 2002-07-23 West Japan Railway Co Aerodynamic sound reducing structure for recessed part with bar
EP2778045A1 (en) * 2013-03-15 2014-09-17 BAE Systems PLC Cavity acoustic tones suppression
FR3010971A1 (en) * 2013-09-25 2015-03-27 Airbus Operations Sas DEVICE FOR ACOUSTICALLY PROTECTING AN AIR INPUT / OUTPUT OF A PART OF AN AIRCRAFT FUSELAGE
CN105751869A (en) * 2016-03-23 2016-07-13 西北工业大学 Deformable cavity device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934846A (en) * 1974-10-08 1976-01-27 The United States Of America As Represented By The Secretary Of The Air Force Device to reduce flow induced pressure oscillations in open cavities
USH501H (en) * 1987-02-27 1988-08-02 The United States Of America As Represented By The Secretary Of The Army Apparatus for acoustical quieting of a cavity
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
JP2002205639A (en) * 2001-01-10 2002-07-23 West Japan Railway Co Aerodynamic sound reducing structure for recessed part with bar
EP2778045A1 (en) * 2013-03-15 2014-09-17 BAE Systems PLC Cavity acoustic tones suppression
FR3010971A1 (en) * 2013-09-25 2015-03-27 Airbus Operations Sas DEVICE FOR ACOUSTICALLY PROTECTING AN AIR INPUT / OUTPUT OF A PART OF AN AIRCRAFT FUSELAGE
CN105751869A (en) * 2016-03-23 2016-07-13 西北工业大学 Deformable cavity device

Also Published As

Publication number Publication date
GB2555086A (en) 2018-04-25
GB201617217D0 (en) 2016-11-23

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