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GB1466874A - Gas rurbine engine variable area exhaust nozzle - Google Patents

Gas rurbine engine variable area exhaust nozzle

Info

Publication number
GB1466874A
GB1466874A GB5560873A GB5560873A GB1466874A GB 1466874 A GB1466874 A GB 1466874A GB 5560873 A GB5560873 A GB 5560873A GB 5560873 A GB5560873 A GB 5560873A GB 1466874 A GB1466874 A GB 1466874A
Authority
GB
United Kingdom
Prior art keywords
flaps
chute
arcuate
rollers
cams
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
GB5560873A
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB5560873A priority Critical patent/GB1466874A/en
Publication of GB1466874A publication Critical patent/GB1466874A/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
    • 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
    • F02K1/46—Nozzles having means for adding air to the jet or for augmenting the mixing region between the jet and the ambient air, e.g. for silencing
    • F02K1/48—Corrugated nozzles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

1466874 Jet propulsion nozzles - variable geometry ROLLS ROYCE (1971) Ltd 15 Nov 1974 [30 Nov 1973] 55608/73 Heading F1J A gas turbine jet engine variable geometry propulsion nozzle comprises two sets of pivotallymounted flaps, the flaps 12 of one set being alternately disposed with the flaps 14 of the other set; the flaps 12 are of arcuate section and the flaps 14 are of chute-shape section. The arcuate flaps 12 each have two movable sealing flaps 12a, 12b which contact the chute-shape flaps 14 at each side of the arcuate flap. An actuating mechanism comprising an axially-movable ring member 20 carrying rollers 22 is provided, the rollers engaging cam members 16, 18 carried by the arcuate flaps and the chute flaps respectively. The cams 16 have a surface 16a which rises and a surface 16b which falls while the cams 18 have a surface 18a which corresponds to surface 16a of cam 16, and a surface 18b which continues to rise after a point of inflexion. The nozzle is movable between a maximum area position Fig. 1a for use with re-heat in operation, to a cruise position of smaller area but of circular form Fig. 1b, to a convoluted form Fig. 1c for use when noise reduction procedure is called for, the chute flaps being in their innermost positions, the rollers 22 engaging the portions 18b of the cams. The flaps are held outwardly against the cam rollers by gas-pressure within the nozzle.
GB5560873A 1974-11-15 1974-11-15 Gas rurbine engine variable area exhaust nozzle Expired GB1466874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5560873A GB1466874A (en) 1974-11-15 1974-11-15 Gas rurbine engine variable area exhaust nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5560873A GB1466874A (en) 1974-11-15 1974-11-15 Gas rurbine engine variable area exhaust nozzle

Publications (1)

Publication Number Publication Date
GB1466874A true GB1466874A (en) 1977-03-09

Family

ID=10474390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5560873A Expired GB1466874A (en) 1974-11-15 1974-11-15 Gas rurbine engine variable area exhaust nozzle

Country Status (1)

Country Link
GB (1) GB1466874A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661715A1 (en) * 1990-05-07 1991-11-08 Gen Electric EXHAUST ASSEMBLY FOR MOTORS OF HIGH-SPEED CIVIL TRANSPORT AIRPLANES.
EP0644325A1 (en) * 1993-09-21 1995-03-22 Sener, Ingenieria Y Sistemas, S.A. Exhaust nozzle for a gas turbine
US9261046B2 (en) 2013-01-21 2016-02-16 Lockheed Martin Corporation Gas turbine exhaust noise reduction
US12540587B1 (en) 2024-08-15 2026-02-03 Pratt & Whitney Canada Corp. Gas turbine engine nozzle with variable area

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661715A1 (en) * 1990-05-07 1991-11-08 Gen Electric EXHAUST ASSEMBLY FOR MOTORS OF HIGH-SPEED CIVIL TRANSPORT AIRPLANES.
EP0644325A1 (en) * 1993-09-21 1995-03-22 Sener, Ingenieria Y Sistemas, S.A. Exhaust nozzle for a gas turbine
US5513799A (en) * 1993-09-21 1996-05-07 Sener, Ingenieria, Y Sistemas, S.A. Divergent master petal for orientable nozzles of variable geometry intended for gas turbine engines
US9261046B2 (en) 2013-01-21 2016-02-16 Lockheed Martin Corporation Gas turbine exhaust noise reduction
US12540587B1 (en) 2024-08-15 2026-02-03 Pratt & Whitney Canada Corp. Gas turbine engine nozzle with variable area

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee