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IT1127678B - Rivestimenti acustici a piu stratti - Google Patents

Rivestimenti acustici a piu stratti

Info

Publication number
IT1127678B
IT1127678B IT28001/79A IT2800179A IT1127678B IT 1127678 B IT1127678 B IT 1127678B IT 28001/79 A IT28001/79 A IT 28001/79A IT 2800179 A IT2800179 A IT 2800179A IT 1127678 B IT1127678 B IT 1127678B
Authority
IT
Italy
Prior art keywords
layer acoustic
acoustic coatings
coatings
layer
acoustic
Prior art date
Application number
IT28001/79A
Other languages
English (en)
Other versions
IT7928001A0 (it
Inventor
John Frederick Chaoman
Original Assignee
Rolls Royce
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 Rolls Royce filed Critical Rolls Royce
Publication of IT7928001A0 publication Critical patent/IT7928001A0/it
Application granted granted Critical
Publication of IT1127678B publication Critical patent/IT1127678B/it

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
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/24—Heat or noise insulation
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Pipe Accessories (AREA)
IT28001/79A 1978-12-27 1979-12-07 Rivestimenti acustici a piu stratti IT1127678B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7850046A GB2038410B (en) 1978-12-27 1978-12-27 Acoustic lining utilising resonance

Publications (2)

Publication Number Publication Date
IT7928001A0 IT7928001A0 (it) 1979-12-07
IT1127678B true IT1127678B (it) 1986-05-21

Family

ID=10501954

Family Applications (1)

Application Number Title Priority Date Filing Date
IT28001/79A IT1127678B (it) 1978-12-27 1979-12-07 Rivestimenti acustici a piu stratti

Country Status (6)

Country Link
US (1) US4298090A (it)
JP (1) JPS5590791A (it)
DE (1) DE2950930A1 (it)
FR (1) FR2445436A1 (it)
GB (1) GB2038410B (it)
IT (1) IT1127678B (it)

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US7937927B2 (en) 2004-12-01 2011-05-10 United Technologies Corporation Counter-rotating gearbox for tip turbine engine
DE602004023769D1 (de) 2004-12-01 2009-12-03 United Technologies Corp Gestapelte ringförmige bauteile für turbinenmotoren
DE602004031986D1 (de) 2004-12-01 2011-05-05 United Technologies Corp Gebläse-turbinen-rotoranordnung für einen spitzenturbinenmotor
US7887296B2 (en) 2004-12-01 2011-02-15 United Technologies Corporation Fan blade with integral diffuser section and tip turbine blade section for a tip turbine engine
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US8061968B2 (en) 2004-12-01 2011-11-22 United Technologies Corporation Counter-rotating compressor case and assembly method for tip turbine engine
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WO2006059993A1 (en) 2004-12-01 2006-06-08 United Technologies Corporation Tip turbine engine with multiple fan and turbine stages
WO2006059994A1 (en) 2004-12-01 2006-06-08 United Technologies Corporation Seal assembly for a fan-turbine rotor of a tip turbine engine
WO2006059981A1 (en) 2004-12-01 2006-06-08 United Technologies Corporation Hydraulic seal for a gearbox of a tip turbine engine
US7959406B2 (en) 2004-12-01 2011-06-14 United Technologies Corporation Close coupled gearbox assembly for a tip turbine engine
WO2006059996A1 (en) 2004-12-01 2006-06-08 United Technologies Corporation Balanced turbine rotor fan blade for a tip turbine engine
WO2006060004A1 (en) 2004-12-01 2006-06-08 United Technologies Corporation Combustor for turbine engine
WO2006059975A1 (en) 2004-12-01 2006-06-08 United Technologies Corporation Peripheral combustor for tip turbine engine
WO2006060014A1 (en) 2004-12-01 2006-06-08 United Technologies Corporation Starter generator system for a tip turbine engine
US7883315B2 (en) 2004-12-01 2011-02-08 United Technologies Corporation Seal assembly for a fan rotor of a tip turbine engine
US7882695B2 (en) 2004-12-01 2011-02-08 United Technologies Corporation Turbine blow down starter for turbine engine
US7607286B2 (en) * 2004-12-01 2009-10-27 United Technologies Corporation Regenerative turbine blade and vane cooling for a tip turbine engine
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WO2006062497A1 (en) 2004-12-04 2006-06-15 United Technologies Corporation Tip turbine engine mount
US20060169532A1 (en) * 2005-02-03 2006-08-03 Patrick William P Acoustic liner with nonuniform impedance
US7311175B2 (en) 2005-08-10 2007-12-25 United Technologies Corporation Acoustic liner with bypass cooling
US7401682B2 (en) 2005-08-10 2008-07-22 United Technologies Corporation Architecture for an acoustic liner
AT503236B1 (de) * 2005-10-28 2009-01-15 Berger Johann Bauplatte od. dgl., deren herstellung und verwendung
US7959412B2 (en) * 2006-09-29 2011-06-14 General Electric Company Wind turbine rotor blade with acoustic lining
US8967945B2 (en) 2007-05-22 2015-03-03 United Technologies Corporation Individual inlet guide vane control for tip turbine engine
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FR2925463B1 (fr) * 2007-12-21 2010-04-23 Airbus France Structure pour le traitement acoustique plus particulierement adaptee a une entree d'air d'une nacelle d'aeronef
GB0907578D0 (en) * 2009-05-05 2009-06-10 Rolls Royce Plc A damping assembly
DE102009037956B4 (de) 2009-08-18 2024-06-06 MTU Aero Engines AG Turbinenaustrittsgehäuse
FR2960334B1 (fr) * 2010-05-19 2012-08-03 Snecma Panneau de traitement acoustique multicouches
JP5206818B2 (ja) * 2011-02-14 2013-06-12 トヨタ自動車株式会社 車両用吸音構造体
US9514734B1 (en) * 2011-06-30 2016-12-06 The United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration Acoustic liners for turbine engines
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US11047304B2 (en) 2018-08-08 2021-06-29 General Electric Company Acoustic cores with sound-attenuating protuberances
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US11143170B2 (en) 2019-06-28 2021-10-12 The Boeing Company Shape memory alloy lifting tubes and shape memory alloy actuators including the same
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US11970992B2 (en) * 2021-06-03 2024-04-30 General Electric Company Acoustic cores and tools and methods for forming the same
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US3831710A (en) * 1973-01-24 1974-08-27 Lockheed Aircraft Corp Sound absorbing panel
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US4265955A (en) * 1978-05-01 1981-05-05 The Boeing Company Honeycomb core with internal septum and method of making same

Also Published As

Publication number Publication date
GB2038410A (en) 1980-07-23
US4298090A (en) 1981-11-03
JPS5590791A (en) 1980-07-09
GB2038410B (en) 1982-11-17
FR2445436A1 (fr) 1980-07-25
DE2950930A1 (de) 1980-07-03
IT7928001A0 (it) 1979-12-07

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