GB1379684A - Foam acoustic damping for an internal combustion engine - Google Patents

Foam acoustic damping for an internal combustion engine

Info

Publication number
GB1379684A
GB1379684A GB1139072A GB1139072A GB1379684A GB 1379684 A GB1379684 A GB 1379684A GB 1139072 A GB1139072 A GB 1139072A GB 1139072 A GB1139072 A GB 1139072A GB 1379684 A GB1379684 A GB 1379684A
Authority
GB
United Kingdom
Prior art keywords
foam
discharged
gases
manifold
jet
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
GB1139072A
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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
Priority claimed from US00122857A external-priority patent/US3815356A/en
Application filed by TRW Inc filed Critical TRW Inc
Publication of GB1379684A publication Critical patent/GB1379684A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K9/00Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/42Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
    • F02K9/60Constructional parts; Details not otherwise provided for
    • F02K9/62Combustion or thrust chambers
    • F02K9/64Combustion or thrust chambers having cooling arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K1/00Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/28Plants 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02KJET-PROPULSION PLANTS
    • F02K1/00Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/28Plants 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
    • F02K1/34Plants 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Engines (AREA)

Abstract

1379684 Rocket engines - silencing TRW Inc 10 March 1972 [10 March 1971 (2)] 11390/72 Headings F1B F1J and F1L The invention relates to a method of cooling and acoustic damping of the exhaust gases of an internal combustion engine by injecting foam into the boundary of the exhaust gases, the invention being described with reference to a rocket engine. The rocket engine shown comprises a fuel injector 15 and an oxidizer supply duct 18. An annular manifold 20 is disposed around the upstream end of the combustion chamber and communicates therewith through apertures 21. A foam generator 25 communicates with the manifold whereby foam may be discharged into the combustion chamber adjacent the outer surface of the combustion gases. A foam agent may be discharged directly into the flow of oxidizer whereby the foam is formed directly in the combustion chamber. In another embodiment the foam manifold is disposed around the jet pipe whereby the foam is discharged into the outer peripheral surface of the jet gases. In Fig. 3 the foam is discharged from an annular manifold 36 disposed around the outlet of the jet nozzle, a cylindrical screen 37 being so disposed that foam discharges through the screen into the jet gases.
GB1139072A 1971-03-10 1972-03-10 Foam acoustic damping for an internal combustion engine Expired GB1379684A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12285871A 1971-03-10 1971-03-10
US00122857A US3815356A (en) 1971-03-10 1971-03-10 Foam cooling and acoustic damping of exhaust gases produced by an internal combustion engine

Publications (1)

Publication Number Publication Date
GB1379684A true GB1379684A (en) 1975-01-08

Family

ID=26820969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1139072A Expired GB1379684A (en) 1971-03-10 1972-03-10 Foam acoustic damping for an internal combustion engine

Country Status (1)

Country Link
GB (1) GB1379684A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113833661A (en) * 2021-09-18 2021-12-24 珠海格力节能环保制冷技术研究中心有限公司 Pump body structure and compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113833661A (en) * 2021-09-18 2021-12-24 珠海格力节能环保制冷技术研究中心有限公司 Pump body structure and compressor

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees