GB745697A - Improvements in or relating to propulsive nozzles for jet propulsion units - Google Patents

Improvements in or relating to propulsive nozzles for jet propulsion units

Info

Publication number
GB745697A
GB745697A GB25629/53A GB2562953A GB745697A GB 745697 A GB745697 A GB 745697A GB 25629/53 A GB25629/53 A GB 25629/53A GB 2562953 A GB2562953 A GB 2562953A GB 745697 A GB745697 A GB 745697A
Authority
GB
United Kingdom
Prior art keywords
slot
nozzle
jet propulsion
jet
gas
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
GB25629/53A
Inventor
Jean Henri Bertin
Louis Alexandre Jules Bauger
Marcel Kadosch
Franqois Marie Louis Maunoury
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
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
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 Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of GB745697A publication Critical patent/GB745697A/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
    • F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/08—Plants including a gas turbine driving a compressor or a ducted fan with supplementary heating of the working fluid; Control thereof
    • F02K3/10—Plants including a gas turbine driving a compressor or a ducted fan with supplementary heating of the working fluid; Control thereof by after-burners
    • 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
    • F02K1/30—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 varying effective area of jet pipe or nozzle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

745,697. Jet propulsion plant. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Sept. 16, 1953 [Sept. 18, 1952], No. 25629/53. Class 110(3) In a device for varying the area of the nozzle of the jet pipe of a jet propulsion engine by means of an auxiliary fluid injected into the nozzle, near its outlet end, through a slot or like passage, the fluid is supplied through a duct which is further connected to a secondary jet propulsion nozzle, controllable valve means being provided for proportioning the supply of fluid to the slot and to the secondary nozzle. In the jet propulsion engine shown in Fig. 1, combustion gas is tapped off from combustion chambers 3 through holes 17 in an inner casing 15 and conveyed through the annular passage 14 between the inner casing 15 and an outer casing 16 to a circumferential slot 13 near the discharge nozzle of the jet pipe 5. The jet of gas flowing from the slot 13 impinges upon the main flow through the jet pipe and reduces the effective cross-sectional area of the discharge nozzle. Shutters 19, which overlap as shown in Fig. 3a are movable by means of a jack 20 between a position in which the slot 13 is fully closed and the tappedoff gas is discharged through an annular nozzle 18 and a position in which nozzle 18 is fully closed and the slot 13 is fully open. When reheat burners 6 are put into operation, the shutters 19 are simultaneously operated to close the slot 13 so as to increase the effective cross-sectional area of the discharge nozzle. Instead of being continuous, the slot 13 may comprise a number of separate segments. Combustion chambers or other heating devices may be provided within the annular passage 14. Water, steam or methanol may be injected into the tapped-off gas. Instead of combustion gas, compressed air tapped off from the air compressor 2 may be used. The annular passage may be contained within two casings spaced from and separate from the casing of the engine. The passage may only partially surround the engine and may be crescent-shaped in cross-section. Specification 745,630 is referred to.
GB25629/53A 1952-09-18 1953-09-16 Improvements in or relating to propulsive nozzles for jet propulsion units Expired GB745697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1009441X 1952-09-18

Publications (1)

Publication Number Publication Date
GB745697A true GB745697A (en) 1956-02-29

Family

ID=9568167

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25629/53A Expired GB745697A (en) 1952-09-18 1953-09-16 Improvements in or relating to propulsive nozzles for jet propulsion units

Country Status (3)

Country Link
DE (1) DE1009441B (en)
FR (1) FR1063453A (en)
GB (1) GB745697A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971327A (en) * 1957-11-26 1961-02-14 Westinghouse Electric Corp Discharge control of an overexpanding propulsion nozzle
US3000178A (en) * 1957-09-16 1961-09-19 Snecma Ejection nozzles having variable cross-sectional area
EP2816202A1 (en) * 2013-06-21 2014-12-24 Siemens Aktiengesellschaft Combined power generation power plant installation
EP3244054A4 (en) * 2015-06-16 2018-08-15 IHI Corporation Structure for rear part of engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073242B (en) * 1960-01-14 Power Jets (Research &. Develop ment) Limited London Jet propulsion nozzle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000178A (en) * 1957-09-16 1961-09-19 Snecma Ejection nozzles having variable cross-sectional area
US2971327A (en) * 1957-11-26 1961-02-14 Westinghouse Electric Corp Discharge control of an overexpanding propulsion nozzle
EP2816202A1 (en) * 2013-06-21 2014-12-24 Siemens Aktiengesellschaft Combined power generation power plant installation
EP3244054A4 (en) * 2015-06-16 2018-08-15 IHI Corporation Structure for rear part of engine
US10830180B2 (en) 2015-06-16 2020-11-10 Ihi Corporation Engine aft section structure

Also Published As

Publication number Publication date
DE1009441B (en) 1957-05-29
FR1063453A (en) 1954-05-04

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