BRPI0402648A - Sistema de controle de ruìdo em motor a jato - Google Patents

Sistema de controle de ruìdo em motor a jato

Info

Publication number
BRPI0402648A
BRPI0402648A BR0402648-9A BRPI0402648A BRPI0402648A BR PI0402648 A BRPI0402648 A BR PI0402648A BR PI0402648 A BRPI0402648 A BR PI0402648A BR PI0402648 A BRPI0402648 A BR PI0402648A
Authority
BR
Brazil
Prior art keywords
jet
noise control
jet engine
control system
main
Prior art date
Application number
BR0402648-9A
Other languages
English (en)
Inventor
Paolo Graziosi
Kevin Kirtley
Ramani Mani
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of BRPI0402648A publication Critical patent/BRPI0402648A/pt
Publication of BRPI0402648B1 publication Critical patent/BRPI0402648B1/pt

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
    • F02K1/46—Nozzles having means for adding air to the jet or for augmenting the mixing region between the jet and the ambient air, e.g. for silencing
    • F02K1/48—Corrugated nozzles
    • 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
    • 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
    • F02K1/44—Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

"SISTEMA DE CONTROLE DE RUìDO EM MOTOR A JATO". Um sistema para o controle de ruído de um motor a jato de um motor a jato apresentando um fluxo de jato principal (32) que deixa o bocal de exaustão (44) e que flui ao longo do eixo do jato (30) inclui um escudo termo acústico (42) dirigido em um ângulo diferente de zero em relação ao eixo do jato (30). O escudo termo acústico (42) pode ser configurado ao redor do fluxo principal do eixo (32). O sistema ainda pode incluir pelo menos um chevron de fluido (40) injetado em um local em relação à saída do bocal (44) para incrementar a mistura no fluxo principal de jato (32) e para criar um fluxo de jato não circular.
BRPI0402648A 2003-06-30 2004-04-29 sistema de controle de ruído em motor a jato BRPI0402648B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/610,718 US7581692B2 (en) 2003-06-30 2003-06-30 Fluidic chevrons and configurable thermal shield for jet noise reduction

Publications (2)

Publication Number Publication Date
BRPI0402648A true BRPI0402648A (pt) 2005-02-09
BRPI0402648B1 BRPI0402648B1 (pt) 2017-04-04

Family

ID=33435412

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0402648A BRPI0402648B1 (pt) 2003-06-30 2004-04-29 sistema de controle de ruído em motor a jato

Country Status (7)

Country Link
US (1) US7581692B2 (pt)
EP (1) EP1493912B1 (pt)
JP (1) JP2005023929A (pt)
CN (1) CN100507252C (pt)
BR (1) BRPI0402648B1 (pt)
CA (1) CA2464830C (pt)
DE (1) DE602004001934T2 (pt)

Families Citing this family (13)

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US7308966B2 (en) * 2003-12-30 2007-12-18 General Electric Company Device for reducing jet engine exhaust noise using oscillating jets
US7305817B2 (en) 2004-02-09 2007-12-11 General Electric Company Sinuous chevron exhaust nozzle
FR2872549B1 (fr) 2004-07-05 2006-09-22 Centre Nat Rech Scient Cnrse Reacteur d'avion equipe d'un dispositif de reduction de bruit des jets propulsifs
US7685806B2 (en) 2005-12-29 2010-03-30 General Electric Company Method and apparatus for supersonic and shock noise reduction in aircraft engines using pneumatic corrugations
FR2902758B1 (fr) * 2006-06-21 2009-04-10 Airbus France Sas Ensemble propulsif d'aeronef comportant un conduit d'ejection avec un bord de fuite echancre
US7966826B2 (en) * 2007-02-14 2011-06-28 The Boeing Company Systems and methods for reducing noise from jet engine exhaust
FR2929336B1 (fr) * 2008-03-31 2012-06-01 Airbus France Dispositif a jets plans de reduction du bruit genere par un reacteur d'aeronef
US8356468B2 (en) * 2009-06-12 2013-01-22 The Boeing Company Gas turbine engine nozzle configurations
DE102009032841A1 (de) * 2009-07-13 2011-01-20 Rolls-Royce Deutschland Ltd & Co Kg Geräuschreduziertes Flugzeugtriebwerk sowie Verfahren zur Verminderung von Geräuschemissionen eines Flugzeugtriebwerks
US9145801B2 (en) 2013-07-01 2015-09-29 The Boeing Company Systems and methods for acoustic resonance mitigation
FR3009027B1 (fr) * 2013-07-26 2018-04-06 Airbus Operations Ensemble turbomachine d'aeronef a bruit de jet attenue.
US10611458B2 (en) * 2017-05-09 2020-04-07 The Boeing Company Aircraft cabin noise reduction systems and methods
CN111810315B (zh) * 2020-06-30 2021-08-17 西安航天动力试验技术研究所 一种基于柔性水幕的噪声吸收导流装置

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US3565208A (en) * 1970-02-02 1971-02-23 Rohr Corp Retractable silencing shield for jet engine nozzle
FR2126922B1 (pt) * 1971-01-20 1975-01-17 Snecma
US3726091A (en) * 1971-02-16 1973-04-10 Rohr Corp Sound suppressing apparatus
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US6705547B2 (en) * 2002-02-01 2004-03-16 Luis Manuel Braga Da Costa Campos Active noise reducing nozzle
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Also Published As

Publication number Publication date
DE602004001934D1 (de) 2006-09-28
CN100507252C (zh) 2009-07-01
BRPI0402648B1 (pt) 2017-04-04
CN1576560A (zh) 2005-02-09
EP1493912A1 (en) 2005-01-05
JP2005023929A (ja) 2005-01-27
DE602004001934T2 (de) 2007-03-08
CA2464830C (en) 2011-04-12
EP1493912B1 (en) 2006-08-16
US7581692B2 (en) 2009-09-01
US20040262447A1 (en) 2004-12-30
CA2464830A1 (en) 2004-12-30

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Legal Events

Date Code Title Description
B03H Publication of an application: rectification [chapter 3.8 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: A CLASSIFICACAO ANTERIOR ERA: G10K 11/16

Ipc: F02K 1/34 (2006.01), B64D 33/04 (2006.01)

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 15A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2512 DE 26-02-2019 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.