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FR2396868A1 - Combined thermal and noise insulation for jet pipes - has metallic honeycomb covered with layer of porous refractory material in metal casing - Google Patents

Combined thermal and noise insulation for jet pipes - has metallic honeycomb covered with layer of porous refractory material in metal casing

Info

Publication number
FR2396868A1
FR2396868A1 FR7721832A FR7721832A FR2396868A1 FR 2396868 A1 FR2396868 A1 FR 2396868A1 FR 7721832 A FR7721832 A FR 7721832A FR 7721832 A FR7721832 A FR 7721832A FR 2396868 A1 FR2396868 A1 FR 2396868A1
Authority
FR
France
Prior art keywords
layer
refractory material
porous refractory
metal casing
jet pipes
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
FR7721832A
Other languages
French (fr)
Other versions
FR2396868B1 (en
Inventor
Jean-Paul Bernard
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.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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 SNECMA SAS filed Critical SNECMA SAS
Priority to FR7721832A priority Critical patent/FR2396868A1/en
Publication of FR2396868A1 publication Critical patent/FR2396868A1/en
Application granted granted Critical
Publication of FR2396868B1 publication Critical patent/FR2396868B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2581/00—Seals; Sealing equipment; Gaskets

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)
  • Laminated Bodies (AREA)

Abstract

The jet pipe of a jet engine has a jacket which insulates both heat and noise. The jacket has a metal outer surface (40) which supports a layer (50) of porous refractory material (50). The inner surface of the refractory has a lining of metal foil (60) which supports a honeycomb structure (11). The inner surface of the honeycomb is covered with a perforated metal sheet (12) so that each cell of the honeycomb communicates with the jet gases. The metal parts are made of titanius or heat resisting super alloys whilst silicon fibres are used for the refractory layer (50).
FR7721832A 1977-07-07 1977-07-07 Combined thermal and noise insulation for jet pipes - has metallic honeycomb covered with layer of porous refractory material in metal casing Granted FR2396868A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7721832A FR2396868A1 (en) 1977-07-07 1977-07-07 Combined thermal and noise insulation for jet pipes - has metallic honeycomb covered with layer of porous refractory material in metal casing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7721832A FR2396868A1 (en) 1977-07-07 1977-07-07 Combined thermal and noise insulation for jet pipes - has metallic honeycomb covered with layer of porous refractory material in metal casing

Publications (2)

Publication Number Publication Date
FR2396868A1 true FR2396868A1 (en) 1979-02-02
FR2396868B1 FR2396868B1 (en) 1980-01-04

Family

ID=9193402

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721832A Granted FR2396868A1 (en) 1977-07-07 1977-07-07 Combined thermal and noise insulation for jet pipes - has metallic honeycomb covered with layer of porous refractory material in metal casing

Country Status (1)

Country Link
FR (1) FR2396868A1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460779A1 (en) * 1979-07-06 1981-01-30 Rohr Industries Inc METHOD FOR MANUFACTURING AN ALVEOLAR SOUNDPROOFING STRUCTURE AND STRUCTURE THUS MANUFACTURED
JPS57143198A (en) * 1981-01-29 1982-09-04 Nashionaare Dechiyuudo E Do Co Sound attenuating lining for gas pipe passage, especially, flow pipe of turboengine blower and installation for producing same
EP0436685A1 (en) * 1989-06-26 1991-07-17 Grumman Aerospace Corp An acoustic liner.
EP0445431A2 (en) * 1990-03-09 1991-09-11 G + H Montage Gmbh Resonator screen for a sound damping screen
EP0557597A1 (en) * 1991-12-18 1993-09-01 Rex-Patent Graf von Rex KG Thermal and acoustic insulating laminate
EP0636780A1 (en) * 1993-06-25 1995-02-01 Nordam Noise suppression liner for jet engines
EP0702141A2 (en) * 1994-09-14 1996-03-20 Mitsubishi Jukogyo Kabushiki Kaisha Sound absorbing apparatus for a supersonic jet propelling engine
FR2765142A1 (en) * 1997-06-30 1998-12-31 Lorraine Laminage LIGHT STRUCTURAL PANEL
EP0895852A1 (en) * 1997-08-06 1999-02-10 Usinor Multilayered sheet, also known as sandwich sheet
WO2010012900A2 (en) * 2008-07-30 2010-02-04 Aircelle Acoustic attenuation panel for aircraft engine nacelle
FR2934641A1 (en) * 2008-07-30 2010-02-05 Aircelle Sa Sound attenuation panel for jet engine nacelle of aircraft, has porous material placed on structuring skin that is fixed with stiffener, where porous material is used as sound absorption material
FR2938014A1 (en) * 2008-11-06 2010-05-07 Aircelle Sa Inner partition and outer panel assembly for air inlet structure of nacelle of turbojet engine of aircraft, has connecting element comprising structural skin fixed to partition and porous material attached to skin and fixed to outer panel
DE102011108533A1 (en) * 2011-07-26 2013-01-31 Rolls-Royce Deutschland Ltd & Co Kg Exhaust gas turbine cone with three-dimensionally profiled partition and plate-like wall element
US20150118023A1 (en) * 2013-07-03 2015-04-30 Pratt & Whitney Canada Corp. Acoustic structure for a gas turbine engine
EP3232434A1 (en) * 2016-04-15 2017-10-18 Rohr, Inc. Acoustic panel with vertical stiffeners
US20180142621A1 (en) * 2016-11-18 2018-05-24 Rohr, Inc. Acoustic panel with sidewall stringers
US10316755B2 (en) * 2016-11-18 2019-06-11 Rohr, Inc. Acoustic panel with sidewall stringers

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460779A1 (en) * 1979-07-06 1981-01-30 Rohr Industries Inc METHOD FOR MANUFACTURING AN ALVEOLAR SOUNDPROOFING STRUCTURE AND STRUCTURE THUS MANUFACTURED
JPS57143198A (en) * 1981-01-29 1982-09-04 Nashionaare Dechiyuudo E Do Co Sound attenuating lining for gas pipe passage, especially, flow pipe of turboengine blower and installation for producing same
US4449607A (en) * 1981-01-29 1984-05-22 S.N.E.C.M.A. Soundproofing for a gas pipe, in particular for the fan jet of a turbojet, and equipment for its fabrication
JPS6361520B2 (en) * 1981-01-29 1988-11-29
EP0436685A4 (en) * 1989-06-26 1991-11-21 Grumman Aerospace Corporation An acoustic liner
EP0436685A1 (en) * 1989-06-26 1991-07-17 Grumman Aerospace Corp An acoustic liner.
EP0445431A2 (en) * 1990-03-09 1991-09-11 G + H Montage Gmbh Resonator screen for a sound damping screen
EP0445431A3 (en) * 1990-03-09 1992-10-21 G + H Montage Gmbh Resonator screen for a sound damping screen
EP0557597A1 (en) * 1991-12-18 1993-09-01 Rex-Patent Graf von Rex KG Thermal and acoustic insulating laminate
EP0636780A1 (en) * 1993-06-25 1995-02-01 Nordam Noise suppression liner for jet engines
EP0702141A2 (en) * 1994-09-14 1996-03-20 Mitsubishi Jukogyo Kabushiki Kaisha Sound absorbing apparatus for a supersonic jet propelling engine
EP0702141A3 (en) * 1994-09-14 1998-12-02 Mitsubishi Jukogyo Kabushiki Kaisha Sound absorbing apparatus for a supersonic jet propelling engine
FR2765142A1 (en) * 1997-06-30 1998-12-31 Lorraine Laminage LIGHT STRUCTURAL PANEL
EP0888881A1 (en) * 1997-06-30 1999-01-07 Sollac Lightweight structural panel
US6387535B1 (en) 1997-08-06 2002-05-14 Usinor Sheet having a multilayer structure
EP0895852A1 (en) * 1997-08-06 1999-02-10 Usinor Multilayered sheet, also known as sandwich sheet
FR2767088A1 (en) * 1997-08-06 1999-02-12 Usinor MULTI-LAYER STRUCTURAL SHEET SAID SANDWICH SHEET
WO2010012900A3 (en) * 2008-07-30 2014-11-13 Aircelle Acoustic attenuation panel for aircraft engine nacelle
WO2010012900A2 (en) * 2008-07-30 2010-02-04 Aircelle Acoustic attenuation panel for aircraft engine nacelle
FR2934641A1 (en) * 2008-07-30 2010-02-05 Aircelle Sa Sound attenuation panel for jet engine nacelle of aircraft, has porous material placed on structuring skin that is fixed with stiffener, where porous material is used as sound absorption material
US8899512B2 (en) 2008-07-30 2014-12-02 Aircelle Acoustic attenuation panel for aircraft for engine nacelle
FR2938014A1 (en) * 2008-11-06 2010-05-07 Aircelle Sa Inner partition and outer panel assembly for air inlet structure of nacelle of turbojet engine of aircraft, has connecting element comprising structural skin fixed to partition and porous material attached to skin and fixed to outer panel
US8479877B2 (en) 2011-07-26 2013-07-09 Rolls-Royce Deutschland Ltd & Co Kg Gas-turbine exhaust cone with three-dimensionally profiled partition wall and plate-type wall element
DE102011108533A1 (en) * 2011-07-26 2013-01-31 Rolls-Royce Deutschland Ltd & Co Kg Exhaust gas turbine cone with three-dimensionally profiled partition and plate-like wall element
EP2551507A3 (en) * 2011-07-26 2017-10-04 Rolls-Royce Deutschland Ltd & Co KG Waste gas turbine cone with three dimensional profiled partition wall and board-shaped wall element
US20150118023A1 (en) * 2013-07-03 2015-04-30 Pratt & Whitney Canada Corp. Acoustic structure for a gas turbine engine
US9909501B2 (en) * 2013-07-03 2018-03-06 Pratt & Whitney Canada Corp. Acoustic structure for a gas turbine engine
EP3232434A1 (en) * 2016-04-15 2017-10-18 Rohr, Inc. Acoustic panel with vertical stiffeners
US9978354B2 (en) 2016-04-15 2018-05-22 Rohr, Inc. Acoustic panel with vertical stiffeners
US20180142621A1 (en) * 2016-11-18 2018-05-24 Rohr, Inc. Acoustic panel with sidewall stringers
US10309305B2 (en) * 2016-11-18 2019-06-04 Rohr, Inc. Acoustic panel with sidewall stringers
US10316755B2 (en) * 2016-11-18 2019-06-11 Rohr, Inc. Acoustic panel with sidewall stringers

Also Published As

Publication number Publication date
FR2396868B1 (en) 1980-01-04

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