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IT949978B - Riduzione mediante modulazione del disturbo dovuto al rumore di un turbomotore a gas - Google Patents

Riduzione mediante modulazione del disturbo dovuto al rumore di un turbomotore a gas

Info

Publication number
IT949978B
IT949978B IT21557/72A IT2155772A IT949978B IT 949978 B IT949978 B IT 949978B IT 21557/72 A IT21557/72 A IT 21557/72A IT 2155772 A IT2155772 A IT 2155772A IT 949978 B IT949978 B IT 949978B
Authority
IT
Italy
Prior art keywords
noise
turbomotor
modulation
reduction
gas
Prior art date
Application number
IT21557/72A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT949978B publication Critical patent/IT949978B/it

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
    • F02K1/78—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
    • F05D2200/00—Mathematical features
    • F05D2200/10—Basic functions
    • F05D2200/11—Sum

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
IT21557/72A 1971-04-26 1972-03-08 Riduzione mediante modulazione del disturbo dovuto al rumore di un turbomotore a gas IT949978B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13751671A 1971-04-26 1971-04-26

Publications (1)

Publication Number Publication Date
IT949978B true IT949978B (it) 1973-06-11

Family

ID=22477777

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21557/72A IT949978B (it) 1971-04-26 1972-03-08 Riduzione mediante modulazione del disturbo dovuto al rumore di un turbomotore a gas

Country Status (6)

Country Link
US (1) US3693749A (it)
BE (1) BE777942A (it)
DE (1) DE2214035A1 (it)
FR (1) FR2134364B1 (it)
GB (1) GB1370720A (it)
IT (1) IT949978B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936606A (en) * 1971-12-07 1976-02-03 Wanke Ronald L Acoustic abatement method and apparatus
US4044203A (en) * 1972-11-24 1977-08-23 National Research Development Corporation Active control of sound waves
FR2370171A1 (fr) * 1976-11-05 1978-06-02 Snecma Procede et dispositif pour la diminution du bruit des turbomachines
FR2370170A1 (fr) * 1976-11-05 1978-06-02 Snecma Procede et dispositif pour la diminution du bruit des turbomachines
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
US5420383A (en) * 1993-10-22 1995-05-30 United Technologies Corporation Anti-sound arrangement for multi-stage blade cascade
US5391053A (en) * 1993-11-01 1995-02-21 General Electric Company Active noise control using noise source having adaptive resonant frequency tuning through variable panel loading
US5423658A (en) * 1993-11-01 1995-06-13 General Electric Company Active noise control using noise source having adaptive resonant frequency tuning through variable ring loading
US5415522A (en) * 1993-11-01 1995-05-16 General Electric Company Active noise control using noise source having adaptive resonant frequency tuning through stress variation
DE4341996A1 (de) * 1993-12-09 1995-06-14 Abb Management Ag Verfahren zum Reinhalten bzw. Reinigen einer Gasturbine sowie Vorrichtung zur Durchführung des Verfahrens
EP0772744B1 (en) * 1994-07-28 2001-10-04 The Boeing Company Active control of tone noise in engine ducts
EP0786131B1 (en) * 1994-10-13 2002-01-02 The Boeing Company Jet engine fan noise reduction system utilizing electro pneumatic transducers
CA2293076C (en) * 1999-12-22 2010-03-30 Man-Chun Tse Fan and compressor noise attenuation
US6375118B1 (en) * 2000-08-30 2002-04-23 The Boeing Company High frequency excitation apparatus and method for reducing jet and cavity noise
JP4341608B2 (ja) * 2005-11-01 2009-10-07 トヨタ自動車株式会社 エンジン音制御装置
GB0710162D0 (en) * 2007-05-26 2007-07-04 Rolls Royce Plc Method and apparatus for suppressing aeroengine contrails
ES2796526T3 (es) * 2010-11-30 2020-11-27 Mtu Aero Engines Gmbh Sistema de paletas para un motor de avión
CN103971908B (zh) 2014-05-06 2016-03-09 国家电网公司 一种变压器噪声抑制方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR859276A (fr) * 1939-05-04 1940-12-14 Silencieux
US2783008A (en) * 1951-07-28 1957-02-26 Jr Albert G Bodine Acoustical boundary layer control for aerodynamic bodies
US2853852A (en) * 1956-12-10 1958-09-30 Jr Albert G Bodine Boundary layer control for aerodynamic ducts
US2990905A (en) * 1957-05-13 1961-07-04 Lilley Geoffrey Michael Jet noise suppression means
GB865661A (en) * 1958-02-14 1961-04-19 Expanded Metal Noise suppressor unit for gaseous currents
FR1194562A (fr) * 1958-04-11 1959-11-10 Perfectionnements aux silencieux pour moteurs à combustion interne
US2957537A (en) * 1958-05-16 1960-10-25 Conrad J Morgan Portable sound suppressor for aircraft jet engines
US3009529A (en) * 1958-08-07 1961-11-21 Western Electric Co Air nozzle
US3455413A (en) * 1967-08-22 1969-07-15 Jack C Henley Ultrasonic silencer for jet engines
US3572962A (en) * 1969-06-02 1971-03-30 Canadian Patents Dev Stator blading for noise reduction in turbomachinery
US3576232A (en) * 1969-09-29 1971-04-27 Herbert A Lebert Ultrasonic silencer

Also Published As

Publication number Publication date
FR2134364A1 (it) 1972-12-08
FR2134364B1 (it) 1976-08-06
DE2214035A1 (de) 1972-11-09
GB1370720A (en) 1974-10-16
BE777942A (fr) 1972-05-02
US3693749A (en) 1972-09-26

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