GB808608A - Improvements in nozzles for jet propulsion units - Google Patents

Improvements in nozzles for jet propulsion units

Info

Publication number
GB808608A
GB808608A GB14803/57A GB1480357A GB808608A GB 808608 A GB808608 A GB 808608A GB 14803/57 A GB14803/57 A GB 14803/57A GB 1480357 A GB1480357 A GB 1480357A GB 808608 A GB808608 A GB 808608A
Authority
GB
United Kingdom
Prior art keywords
jet
nozzle
members
blades
grid
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
GB14803/57A
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 GB808608A publication Critical patent/GB808608A/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
    • F02K1/54—Nozzles having means for reversing jet thrust
    • F02K1/56—Reversing jet main flow
    • F02K1/60—Reversing jet main flow by blocking the rearward discharge by means of pivoted eyelids or clamshells, e.g. target-type reversers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
    • B64C23/005—Influencing air flow over aircraft surfaces, not otherwise provided for by other means not covered by groups B64C23/02 - B64C23/08, e.g. by electric charges, magnetic panels, piezoelectric elements, static charges or ultrasounds

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Testing Of Engines (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Toys (AREA)

Abstract

808,608. Jet propelled aircraft. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. May 9, 1957 [May 11, 1956], No. 14803/57. Class 4. [Also in Group XXVI] A jet propulsion nozzle ending in a circular outlet comprises an outwardly convex curved annular surface having a minimum diameter greater than that of the outlet and extending around the outlet in radially spaced relation to form an annular gap facing upstream and downstream, and flaps pivoted on the nozzle and movable through the gap between a retracted position outside the nozzle and jet stream and an operative position lying across part of the jet stream. In Fig. 4, the annular surface is in two parts 2a, 2b, the former fixed and the latter attached to a grid of blades 3 and movable between inoperative (upper part of Fig. 4) and operative (lower part of Fig. 4) positions. The movable members are each in two parts 6a and 6<SP>1</SP>a, and 6b and 6<SP>1</SP>b. The upper part of Fig. 4 shows the nozzle in normal operation, members 6a, 6<SP>1</SP>a being retracted into the gap 5. For deflection, members 6<SP>1</SP>a and 6<SP>1</SP>b remain retracted and members 6a, 6b are moved to a central abutting position as shown for member 6b, and the jet is deflected into the grid of blades. To vary the nozzle area, the members are operated in the manner of eyelids, either equally or to different extents to give a deflection of the jet. Ambient air is drawn in through the gap 5 by the jet, and serves to detach the jet from the guide surface 2a, 2b, when deflection is not required. Alternatively, Fig. 5 (not shown), the guide surface may be in one part, fixed with the grid of blades to the nozzle, and the exterior fairing of the nozzle may be movable axially to cover or expose the grid of blades.
GB14803/57A 1956-05-11 1957-05-09 Improvements in nozzles for jet propulsion units Expired GB808608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1037867X 1956-05-11

Publications (1)

Publication Number Publication Date
GB808608A true GB808608A (en) 1959-02-04

Family

ID=9587296

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14803/57A Expired GB808608A (en) 1956-05-11 1957-05-09 Improvements in nozzles for jet propulsion units

Country Status (3)

Country Link
DE (1) DE1037867B (en)
FR (1) FR1150555A (en)
GB (1) GB808608A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224473A (en) * 1987-05-06 1990-05-09 Astech S A Jet-engine thrust-reversers
US4966327A (en) * 1988-10-27 1990-10-30 The Dee Howard Company Jet engine provided with a thrust reverser
US5192023A (en) * 1988-10-27 1993-03-09 The Dee Howard Company Jet engine provided with a thrust reverser
US5310117A (en) * 1988-10-27 1994-05-10 The Dee Howard Company Jet engine provided with a thrust reverser
WO2008107605A2 (en) * 2007-02-01 2008-09-12 Airbus France Aircraft nacelle incorporating a thrust-reversing device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003312A (en) * 1957-08-19 1961-10-10 Thompson Ramo Wooldridge Inc Exhaust nozzle for jet engines
DE1147122B (en) * 1959-06-30 1963-04-11 Rolls Royce Jet nozzle with jet deflectors
US3024601A (en) * 1960-04-12 1962-03-13 Gen Electric Thrust spoiler and reingestion control
US3053045A (en) * 1960-05-19 1962-09-11 Gen Motors Corp Telescoping vanes for jet thrust reverser

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224473A (en) * 1987-05-06 1990-05-09 Astech S A Jet-engine thrust-reversers
GB2224473B (en) * 1987-05-06 1992-12-02 Astech S A Jet-engine thrust-reversers
US4966327A (en) * 1988-10-27 1990-10-30 The Dee Howard Company Jet engine provided with a thrust reverser
US5192023A (en) * 1988-10-27 1993-03-09 The Dee Howard Company Jet engine provided with a thrust reverser
US5310117A (en) * 1988-10-27 1994-05-10 The Dee Howard Company Jet engine provided with a thrust reverser
WO2008107605A2 (en) * 2007-02-01 2008-09-12 Airbus France Aircraft nacelle incorporating a thrust-reversing device
WO2008107605A3 (en) * 2007-02-01 2008-12-24 Airbus France Aircraft nacelle incorporating a thrust-reversing device
JP2010517845A (en) * 2007-02-01 2010-05-27 エアバス フランス Aircraft nacelle with built-in device to reverse thrust
CN101646857B (en) * 2007-02-01 2012-07-18 空中客车运营简化股份公司 Aircraft nacelle incorporating a thrust-reversing device
US8448420B2 (en) 2007-02-01 2013-05-28 Airbus Operations Sas Aircraft nacelle that incorporates a device for reversing thrust

Also Published As

Publication number Publication date
FR1150555A (en) 1958-01-15
DE1037867B (en) 1958-08-28

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