GB1291490A - Jet pipe with variable effective cross-sectional area for a gas turbine engine - Google Patents

Jet pipe with variable effective cross-sectional area for a gas turbine engine

Info

Publication number
GB1291490A
GB1291490A GB6366069A GB6366069A GB1291490A GB 1291490 A GB1291490 A GB 1291490A GB 6366069 A GB6366069 A GB 6366069A GB 6366069 A GB6366069 A GB 6366069A GB 1291490 A GB1291490 A GB 1291490A
Authority
GB
United Kingdom
Prior art keywords
jet pipe
valve
jet
gas turbine
turbine engine
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
GB6366069A
Inventor
Wilfred Thomas Watts
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
Publication of GB1291490A publication Critical patent/GB1291490A/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
    • F02K1/09—Varying effective area of jet pipe or nozzle by axially moving an external member, e.g. a shroud
    • 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
    • F02K1/40—Nozzles having means for dividing the jet into a plurality of partial jets or having an elongated cross-section outlet
    • F02K1/42—Nozzles having means for dividing the jet into a plurality of partial jets or having an elongated cross-section outlet the means being movable into an inoperative position

Abstract

1291490 Variable area jet nozzles ROLLS-ROYCE Ltd 29 Dec 1970 [31 Dec 1969] 63600/69 Heading F1J The invention relates to a variable area jet nozzle for a gas turbine engine, the engine comprising a jet pipe 15 which terminates in a jet nozzle 16. The jet pipe is formed with a series of circumferentially-spaced openings 17, with which are associated a valve-member comprising a cylindrical sleeve 18 formed with circumferentially-spaced openings 19, the sleeve 18 being angularly movable between open and closed positions in which the openings 19 and 17 are aligned and non-aligned so as to permit and prevent flow of gases from the jet pipe respectively. A sleeve member 26 is disposed around the jet pipe so as to provide an annular space 28 and annular nozzle 27 through which the gases flow when the valve is in the open position. The upstream end 38, 39 of the valve-member is supported by a ball-bearing 41 from fixed structure 42, 37. The upstream end of the valvemember is also formed with sprocket teeth 47 and a chain 46 engages with the teeth 47 and with a sprocket wheel 45 of a rotary actuator 44, whereby the valve member may be rotated between the open and closed positions. The chain 46 passes through openings 48 in a fixed cylindrical member 35.
GB6366069A 1969-12-31 1969-12-31 Jet pipe with variable effective cross-sectional area for a gas turbine engine Expired GB1291490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6360069 1969-12-31

Publications (1)

Publication Number Publication Date
GB1291490A true GB1291490A (en) 1972-10-04

Family

ID=10489174

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6366069A Expired GB1291490A (en) 1969-12-31 1969-12-31 Jet pipe with variable effective cross-sectional area for a gas turbine engine

Country Status (1)

Country Link
GB (1) GB1291490A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008045071A1 (en) * 2006-10-12 2008-04-17 United Technologies Corporation Gas turbine engine with a variable exit area fan nozzle, nacelle assembly of such a engine, and corresponding operating method
CN114526175A (en) * 2022-04-24 2022-05-24 中国航发四川燃气涡轮研究院 Gear-driven rear duct ejector for afterburner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008045071A1 (en) * 2006-10-12 2008-04-17 United Technologies Corporation Gas turbine engine with a variable exit area fan nozzle, nacelle assembly of such a engine, and corresponding operating method
US8256225B2 (en) 2006-10-12 2012-09-04 United Technologies Corporation Gas turbine engine with a variable exit area fan nozzle, nacelle assembly of such a engine, and corresponding operating method
CN114526175A (en) * 2022-04-24 2022-05-24 中国航发四川燃气涡轮研究院 Gear-driven rear duct ejector for afterburner

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees