GB1127867A - Improvements in or relating to jet propulsion nozzles - Google Patents

Improvements in or relating to jet propulsion nozzles

Info

Publication number
GB1127867A
GB1127867A GB41925/66A GB4192566A GB1127867A GB 1127867 A GB1127867 A GB 1127867A GB 41925/66 A GB41925/66 A GB 41925/66A GB 4192566 A GB4192566 A GB 4192566A GB 1127867 A GB1127867 A GB 1127867A
Authority
GB
United Kingdom
Prior art keywords
flaps
nozzle
jet
centre body
indicated
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
GB41925/66A
Inventor
Henry Marie Andre Rene Lacombe
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 GB1127867A publication Critical patent/GB1127867A/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
    • F02K1/12—Varying effective area of jet pipe or nozzle by means of pivoted flaps
    • F02K1/123—Varying effective area of jet pipe or nozzle by means of pivoted flaps of two series of flaps, both having their flaps hinged at their upstream ends on a fixed structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Nozzles (AREA)

Abstract

1,127,867. Jet propulsion nozzles. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Sept.20, 1966 [Sept. 21, 1965], No.41925/66. Heading F1J. A jet propulsion nozzle comprises an outer wall 5 and an inner centre body 1 which together define an annular flow path, the centre body comprising a portion 3 of maximum diameter which is followed by a portion 4 of decreasing diameter. The nozzle comprises also a series of flaps 6 pivotally mounted at 7 on the wall 5 for adjusting the area of the nozzle throat, the flaps extending downstream of the portion 3 of the centre body of maximum diameter and forming therewith a convergent - divergent nozzle portion. The general direction of discharge of the divergent portion of the nozzle is convergent in the direction of jet flow. The centre body comprises also an upstream portion of increasing diameter in the direction of flow. The nozzle comprises also an outer fairing member 11 on which a further series of flaps 8 pivotally is mounted at 9. The flaps 6 are shown in two positions 6 1 and 6 2 , 6 1 being the position for take-off without reheat operation and 6 2 for takeoff with reheat operation, the boundary of the jet stream being indicated at A 1 and A 2 respectively. The flaps 8 are indicated in three operational positions, the innermost position being that for take-off, the mid position that for transonic speed and the outermost position that for supersonic cruising speed, the jet boundary for the latter two phases being indicated at B and C respectively.
GB41925/66A 1965-09-21 1966-09-20 Improvements in or relating to jet propulsion nozzles Expired GB1127867A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR32137A FR1458489A (en) 1965-09-21 1965-09-21 Advanced jet for jet thruster

Publications (1)

Publication Number Publication Date
GB1127867A true GB1127867A (en) 1968-09-18

Family

ID=8588772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41925/66A Expired GB1127867A (en) 1965-09-21 1966-09-20 Improvements in or relating to jet propulsion nozzles

Country Status (3)

Country Link
US (1) US3424384A (en)
FR (1) FR1458489A (en)
GB (1) GB1127867A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026472A (en) * 1965-12-08 1977-05-31 General Electric Company Convergent-divergent plug nozzle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799989A (en) * 1954-09-24 1957-07-23 Peter G Kappus Variable area jet nozzle
US3055174A (en) * 1957-01-14 1962-09-25 Boeing Co Retractable noise suppressor for jet engines
GB950288A (en) * 1959-08-18 1964-02-26 Bristol Siddeley Engines Ltd Improvements in nozzles for aircraft propulsion
GB906384A (en) * 1960-07-22 1962-09-19 Power Jets Res & Dev Ltd Jet propulsion nozzles
GB1020018A (en) * 1962-08-16 1966-02-16 Messerschmitt Boelkow Blohm Jet nozzle system for a by-pass type gas turbine jet engine

Also Published As

Publication number Publication date
FR1458489A (en) 1966-03-04
US3424384A (en) 1969-01-28

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