GB1141784A - Nozzles capable of having a silencing effect - Google Patents

Nozzles capable of having a silencing effect

Info

Publication number
GB1141784A
GB1141784A GB2638/68A GB263868A GB1141784A GB 1141784 A GB1141784 A GB 1141784A GB 2638/68 A GB2638/68 A GB 2638/68A GB 263868 A GB263868 A GB 263868A GB 1141784 A GB1141784 A GB 1141784A
Authority
GB
United Kingdom
Prior art keywords
pipe
silencing
nozzle
flap
jan
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.)
Expired
Application number
GB2638/68A
Inventor
Henri Auguste Bonneaud
Rene Gerard Hoch
Louis Francois Jumelle
Gerhard Richter
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
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
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 Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of GB1141784A publication Critical patent/GB1141784A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F02K1/28—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto using fluid jets to influence the jet flow
    • F02K1/34—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto using fluid jets to influence the jet flow for attenuating noise
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipeline Systems (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

1,141,784. Silenced nozzles. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Jan. 17, 1968 [Jan. 18, 1967], No.2638/68. Heading F1J. A silenced nozzle comprises a duct 10 having pivoted flaps 21 at its downstream end, an annular compressed gas manifold 20 surrounding the duct and communicating with a piping arrangement 24, each pipe being mounted on a flap 21 and having a flexible section 25 allowing the pipe to move with the flap, silencing being achieved, when required, by jets of gas from the ends 16 of the pipes directed into the main gas stream. The end 16 of each pipe is of convergent-divergent form. The flaps 21 are pivoted about axes 22 normal to the nozzle axis and when silencing is required they are moved from the position shown in the upper half of Fig. 1 to the position shown in the lower half, a flexible bellows 25 permitting such movement. A fairing 11 surrounds the nozzle.
GB2638/68A 1967-01-18 1968-01-17 Nozzles capable of having a silencing effect Expired GB1141784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR91659A FR1515198A (en) 1967-01-18 1967-01-18 Fluid jet silencers for ejection systems

Publications (1)

Publication Number Publication Date
GB1141784A true GB1141784A (en) 1969-01-29

Family

ID=8624059

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2639/68A Expired GB1183893A (en) 1967-01-18 1968-01-17 Nozzles having Silencing Means
GB2638/68A Expired GB1141784A (en) 1967-01-18 1968-01-17 Nozzles capable of having a silencing effect

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2639/68A Expired GB1183893A (en) 1967-01-18 1968-01-17 Nozzles having Silencing Means

Country Status (2)

Country Link
FR (1) FR1515198A (en)
GB (2) GB1183893A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580417A2 (en) * 2004-03-26 2005-09-28 General Electric Company Noise suppression system for a gas turbine
WO2011052642A1 (en) * 2009-10-28 2011-05-05 株式会社Ihi Noise reduction device with chamber
EP2495423A1 (en) * 2009-10-28 2012-09-05 IHI Corporation Noise reduction device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123486B (en) * 1982-07-12 1986-01-02 Gen Electric Turbofan mixed flow exhaust system
US4537277A (en) * 1982-12-03 1985-08-27 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Silencer for high velocity gas flow
GB8717584D0 (en) * 1987-07-24 1987-09-03 Friedrich T E Jet engine noise suppression arrangement
US5706650A (en) * 1995-08-09 1998-01-13 United Technologies Corporation Vectoring nozzle using injected high pressure air
GB0226228D0 (en) * 2002-11-09 2002-12-18 Rolls Royce Plc Suppression of part of the noise from a gas turbine engine
FR2981134B1 (en) * 2011-10-06 2014-09-19 Snecma DEVICE WITH WALL WITH AT LEAST TWO OPENINGS DISCHARGING IN A GAS STREAM

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580417A2 (en) * 2004-03-26 2005-09-28 General Electric Company Noise suppression system for a gas turbine
EP1580417A3 (en) * 2004-03-26 2007-04-18 General Electric Company Noise suppression system for a gas turbine
US7412832B2 (en) 2004-03-26 2008-08-19 General Electric Company Method and apparatus for operating gas turbine engines
WO2011052642A1 (en) * 2009-10-28 2011-05-05 株式会社Ihi Noise reduction device with chamber
CN102575616A (en) * 2009-10-28 2012-07-11 株式会社Ihi Noise reduction device with chamber
EP2495423A1 (en) * 2009-10-28 2012-09-05 IHI Corporation Noise reduction device
EP2495424A1 (en) * 2009-10-28 2012-09-05 IHI Corporation Noise reduction device with chamber
US8813907B2 (en) 2009-10-28 2014-08-26 Ihi Corporation Noise reduction system with chamber
EP2495423A4 (en) * 2009-10-28 2015-04-15 Ihi Corp Noise reduction device
EP2495424A4 (en) * 2009-10-28 2015-04-22 Ihi Corp Noise reduction device with chamber
US9528468B2 (en) 2009-10-28 2016-12-27 Ihi Corporation Noise reduction system

Also Published As

Publication number Publication date
GB1183893A (en) 1970-03-11
FR1515198A (en) 1968-03-01

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