GB933672A - An outlet nozzle for a ramjet engine - Google Patents

An outlet nozzle for a ramjet engine

Info

Publication number
GB933672A
GB933672A GB39654/61A GB3965461A GB933672A GB 933672 A GB933672 A GB 933672A GB 39654/61 A GB39654/61 A GB 39654/61A GB 3965461 A GB3965461 A GB 3965461A GB 933672 A GB933672 A GB 933672A
Authority
GB
United Kingdom
Prior art keywords
nozzle
destructible
permanent
convergent
outlet
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
GB39654/61A
Inventor
Maurice Ravel
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.)
Nord Aviation Societe Nationale de Constructions Aeronautiques
Original Assignee
Nord Aviation Societe Nationale de Constructions Aeronautiques
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 Nord Aviation Societe Nationale de Constructions Aeronautiques filed Critical Nord Aviation Societe Nationale de Constructions Aeronautiques
Publication of GB933672A publication Critical patent/GB933672A/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
    • F02K1/06—Varying effective area of jet pipe or nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
    • F02K7/10—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/97—Rocket nozzles
    • F02K9/978—Closures for nozzles; Nozzles comprising ejectable or discardable elements

Landscapes

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

Abstract

933,672. Ram jet engine-propulsion nozzles. NORD-AVIATION SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. Nov. 6, 1961 [Feb. 23, 1961], No. 39654/61. Class 110 (3). The invention relates to means for facilitating the starting of a ram jet engine and comprises the provision of a destructible, constricted, outlet nozzle serving as the initial jet pipe outlet, the nozzle being adapted to be melted by the heat of the exhaust gases within a predetermined time after the engine is ignited so as to leave the permanent outlet nozzle whose outlet area is greater than that of the destructible nozzle. The assembly shown in Fig. 1 comprises a ram jet nozzle 1 of convergent-divergent form having a convergent portion 3 and a throat 5, there being disposed therein a destructible nozzle 2 of convergent form, the outlet 4 of which is of smaller cross-sectional area than the throat 5 of the permanent nozzle. The nozzle 2 is disposed against the convergent portion 3 of the permanent nozzle and is secured by means of bolts 7 passing through the cylindrical wall portion of the permanent nozzle and through a cylindrical extension 6 of the destructible nozzle. A row of holes 8 is formed in the destructible nozzle 2, the nozzle first failing in the region of the holes when the ram jet unit comes into operation. The destructible nozzle is formed of material having a low-melting point such as magnesium alloy. In a second embodiment, the convergent destructible nozzle is disposed wholly within the cylindrical portion of the permanent nozzle. In Fig. 2 the destructible nozzle is supported within the permanent nozzle 1 by means of springs 9, while in Fig. 3, the destructible nozzle is supported within the permanent nozzle by means of studs 10, 11. In a further embodiment, Fig. 4, the permanent nozzle is of convergent form and the destructible nozzle comprises a correspondingly convergent portion 12 and a second portion 13 of greater convergence, the destructible nozzle being supported within the permanent nozzle by means of tension springs 9a. In a further embodiment similar to Fig. 3, the circumferential row of holes 8 is replaced by rows of holes extending along generatrices of the destructible nozzle.
GB39654/61A 1961-02-23 1961-11-06 An outlet nozzle for a ramjet engine Expired GB933672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR853662A FR1289601A (en) 1961-02-23 1961-02-23 Releasable outlet nozzle for stato-reactor

Publications (1)

Publication Number Publication Date
GB933672A true GB933672A (en) 1963-08-08

Family

ID=8749510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39654/61A Expired GB933672A (en) 1961-02-23 1961-11-06 An outlet nozzle for a ramjet engine

Country Status (4)

Country Link
US (1) US3184916A (en)
DE (1) DE1181496B (en)
FR (1) FR1289601A (en)
GB (1) GB933672A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302884A (en) * 1963-09-16 1967-02-07 Boeing Co Self-trimming ablative nozzle
US3270504A (en) * 1965-07-20 1966-09-06 Donald R Ward Automatically deploying nozzle exit cone extension
DE2948197C2 (en) * 1979-11-30 1981-12-24 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Launch thrust nozzle for recoil engines, especially rocket ramjet engines
CN103742296B (en) * 2013-12-23 2017-03-01 中国航天科技集团公司第六研究院第十一研究所 A kind of gaseous film control jet pipe
FR3048417B1 (en) * 2016-03-07 2019-08-16 Arianegroup Sas ENGINE-FUSEE LIGHTED BY THE FLOOR
US20220074142A1 (en) * 2020-09-10 2022-03-10 The Babcock & Wilcox Company Smelt shattering method and apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912820A (en) * 1953-07-31 1959-11-17 Quentin R Whitmore Combined ram jet and rocket engine
DE1085720B (en) * 1954-04-27 1960-07-21 Napier & Son Ltd Jet engine
US2880576A (en) * 1954-05-25 1959-04-07 Peter G Kappus Supersonic variable throat nozzle
BE539725A (en) * 1954-08-09
US2952972A (en) * 1957-09-09 1960-09-20 Norman A Kimmel Rocket motor and method of operating same
DE1099804B (en) * 1957-12-31 1961-02-16 Heinrich Klein Dr Ing Two-stage rocket with a combustible base stage
US2984972A (en) * 1958-05-28 1961-05-23 Gen Electric Variable area nozzle arrangement
US3040517A (en) * 1960-06-27 1962-06-26 Carl V Ryden Releasable rocket nozzle

Also Published As

Publication number Publication date
FR1289601A (en) 1962-04-06
US3184916A (en) 1965-05-25
DE1181496B (en) 1964-11-12

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