CA2019802A1 - Revetement insonorisant - Google Patents

Revetement insonorisant

Info

Publication number
CA2019802A1
CA2019802A1 CA2019802A CA2019802A CA2019802A1 CA 2019802 A1 CA2019802 A1 CA 2019802A1 CA 2019802 A CA2019802 A CA 2019802A CA 2019802 A CA2019802 A CA 2019802A CA 2019802 A1 CA2019802 A1 CA 2019802A1
Authority
CA
Canada
Prior art keywords
core member
sound
outside
closed annulus
annular chamber
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.)
Granted
Application number
CA2019802A
Other languages
English (en)
Other versions
CA2019802C (fr
Inventor
Noe Arcas
Charles A. Parente
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.)
Grumman Corp
Original Assignee
Individual
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
Priority claimed from US07/371,398 external-priority patent/US5014815A/en
Priority claimed from US07/371,399 external-priority patent/US5025888A/en
Priority claimed from US07/371,593 external-priority patent/US4969535A/en
Application filed by Individual filed Critical Individual
Publication of CA2019802A1 publication Critical patent/CA2019802A1/fr
Application granted granted Critical
Publication of CA2019802C publication Critical patent/CA2019802C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F02K1/82—Jet pipe walls, e.g. liners
    • F02K1/827—Sound absorbing structures or liners
    • 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
    • B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B64D2033/0206—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes comprising noise reduction means, e.g. acoustic liners
    • 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
    • B64D33/00—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • B64D2033/0266—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for particular type of power plants
    • B64D2033/0286—Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes specially adapted for particular type of power plants for turbofan engines
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
CA002019802A 1989-06-26 1990-06-26 Revetement insonorisant Expired - Fee Related CA2019802C (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US07/371,398 US5014815A (en) 1989-06-26 1989-06-26 Acoustic liner
US371,398 1989-06-26
US371,399 1989-06-26
US07/371,399 US5025888A (en) 1989-06-26 1989-06-26 Acoustic liner
US371,593 1989-06-26
US07/371,593 US4969535A (en) 1989-06-26 1989-06-26 Acoustic liner

Publications (2)

Publication Number Publication Date
CA2019802A1 true CA2019802A1 (fr) 1990-12-26
CA2019802C CA2019802C (fr) 2000-11-28

Family

ID=27409016

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002019802A Expired - Fee Related CA2019802C (fr) 1989-06-26 1990-06-26 Revetement insonorisant

Country Status (5)

Country Link
EP (1) EP0436685B1 (fr)
JP (1) JP3043402B2 (fr)
CA (1) CA2019802C (fr)
DE (1) DE69019133T2 (fr)
WO (1) WO1991001034A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131777A1 (de) * 1991-09-24 1993-03-25 Linde Ag Fluiddurchstroemter schalldaempfer
IT1318059B1 (it) * 2000-06-28 2003-07-21 Aermacchi S P A Struttura fonoassorbente e di rinforzo per pannelli acustici digondole motore.
US8220588B2 (en) * 2010-03-31 2012-07-17 The Boeing Company Unitized engine nacelle structure
FR3022218B1 (fr) * 2014-06-12 2016-07-15 Airbus Operations Sas Nacelle d'aeronef comprenant une entree d'air amelioree
US9771868B2 (en) * 2015-07-21 2017-09-26 The Boeing Company Sound attenuation apparatus and method
US9587563B2 (en) 2015-07-21 2017-03-07 The Boeing Company Sound attenuation apparatus and method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419971A (en) * 1943-06-05 1947-05-06 Rumpf Herman Padding and soundproofing material
BE554083A (fr) * 1956-02-18
US2826261A (en) * 1956-08-30 1958-03-11 Oliver C Eckel Acoustical control apparatus
US3599749A (en) * 1969-07-28 1971-08-17 Rohr Corp Jet noise control system
GB1274343A (en) * 1970-02-24 1972-05-17 Rolls Royce Improvements in or relating to acoustic linings
GB1406844A (en) * 1972-09-01 1975-09-17 Short Brothers & Harland Ltd Sound absorbing panels
US3960236A (en) * 1974-06-17 1976-06-01 Mcdonnell Douglas Corporation Lock core panel
JPS5312970A (en) * 1976-07-21 1978-02-06 Nissan Motor Process for molding packing material of corrugated cardboard
FR2396868A1 (fr) * 1977-07-07 1979-02-02 Snecma Garniture insonorisante pour paroi interne de conduit de gaz, notamment de conduit de turboreacteur
US4226299A (en) * 1978-05-22 1980-10-07 Alphadyne, Inc. Acoustical panel
GB2038410B (en) 1978-12-27 1982-11-17 Rolls Royce Acoustic lining utilising resonance
US4433751A (en) * 1981-12-09 1984-02-28 Pratt & Whitney Aircraft Of Canada Limited Sound suppressor liner

Also Published As

Publication number Publication date
DE69019133D1 (de) 1995-06-08
WO1991001034A2 (fr) 1991-01-24
JPH04500401A (ja) 1992-01-23
EP0436685B1 (fr) 1995-05-03
JP3043402B2 (ja) 2000-05-22
EP0436685A1 (fr) 1991-07-17
EP0436685A4 (en) 1991-11-21
DE69019133T2 (de) 1996-01-04
WO1991001034A3 (fr) 1991-02-21
CA2019802C (fr) 2000-11-28

Similar Documents

Publication Publication Date Title
AU3893978A (en) Reducing the resonant frequency ofa piezoelectric transducer
JPS57113697A (en) Piezoelectric type speaker
EP0400048A4 (en) Improved audio transducer with controlled flexibility diaphragm
US2410413A (en) Acoustic tile
JPS5628600A (en) Piezo-electric speaker
DE3066552D1 (en) Acoustic liner for attenuating noise
GB2049886B (en) Acoustic liner for attenuating noise
GB2064267B (en) Microphone sound inlets
WO1991001034A3 (fr) Garniture d'insonorisation
JPS5698651A (en) Sound converter
USD264790S (en) Place mat
DE3170117D1 (en) Acoustic surface wave transducer with improved inband frequency characteristics
JPS5439626A (en) Cone type honeycomb form diaphragm
JPS5783998A (en) Piezoelectric speaker
AU2600988A (en) Electro-acoustic transducers
GB2075785A (en) Surface acoustic waves converter
JPS5779800A (en) Piezoelectric type speaker
JPS5251929A (en) Diaphragm for speakers
DE3579097D1 (de) Akustisches wellenfilter.
JPS56168496A (en) Speaker
JPS5769997A (en) 360 degrees
GB1334216A (en) Acoustic transducer for use under water
JPS5676700A (en) Diaphragm plate for small-sized sound production body
JPS52117168A (en) Alarm electronic wrist watch
JPS57113698A (en) Piezoelectric speaker

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20030626