GB1457789A - Method of attenuating by mask effect the noise emitted by the jet nozzles of jet engines - Google Patents

Method of attenuating by mask effect the noise emitted by the jet nozzles of jet engines

Info

Publication number
GB1457789A
GB1457789A GB3420074A GB3420074A GB1457789A GB 1457789 A GB1457789 A GB 1457789A GB 3420074 A GB3420074 A GB 3420074A GB 3420074 A GB3420074 A GB 3420074A GB 1457789 A GB1457789 A GB 1457789A
Authority
GB
United Kingdom
Prior art keywords
jet
jet nozzle
attenuating
noise
noise emitted
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
GB3420074A
Other languages
English (en)
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
Publication of GB1457789A publication Critical patent/GB1457789A/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
    • F02K1/44—Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/182—Two-dimensional patterned crenellated, notched

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
GB3420074A 1973-08-31 1974-08-02 Method of attenuating by mask effect the noise emitted by the jet nozzles of jet engines Expired GB1457789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7331582A FR2242570B1 (enExample) 1973-08-31 1973-08-31

Publications (1)

Publication Number Publication Date
GB1457789A true GB1457789A (en) 1976-12-08

Family

ID=9124511

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3420074A Expired GB1457789A (en) 1973-08-31 1974-08-02 Method of attenuating by mask effect the noise emitted by the jet nozzles of jet engines

Country Status (4)

Country Link
US (1) US3968853A (enExample)
DE (1) DE2441345A1 (enExample)
FR (1) FR2242570B1 (enExample)
GB (1) GB1457789A (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288984A (en) * 1978-09-19 1981-09-15 The Boeing Company Noise suppressing turbofan nozzles and method
US4280587A (en) * 1979-05-08 1981-07-28 The Boeing Company Noise-suppressing jet engine nozzles and method
US11319859B2 (en) * 2019-05-30 2022-05-03 Ford Global Technologies, Llc Noise attenuating exhaust tail pipe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3033494A (en) * 1958-08-01 1962-05-08 United Aircraft Corp Jet wake noise intensity pattern control means
GB886201A (en) * 1959-06-01 1962-01-03 Rolls Royce Jet noise silencer for an aircraft
US3174282A (en) * 1963-04-19 1965-03-23 Ryan Aeronautical Co Asymmetrical jet nozzle noise suppressor
US3743185A (en) * 1970-11-26 1973-07-03 Secr Defence Noise suppressor for jet engines
US3706353A (en) * 1970-11-30 1972-12-19 Secr Defence Noise suppressor for jet engines

Also Published As

Publication number Publication date
FR2242570A1 (enExample) 1975-03-28
DE2441345A1 (de) 1975-03-27
FR2242570B1 (enExample) 1976-06-18
US3968853A (en) 1976-07-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee