GB1009776A - Supersonic jet propulsion nozzle - Google Patents

Supersonic jet propulsion nozzle

Info

Publication number
GB1009776A
GB1009776A GB34817/64A GB3481764A GB1009776A GB 1009776 A GB1009776 A GB 1009776A GB 34817/64 A GB34817/64 A GB 34817/64A GB 3481764 A GB3481764 A GB 3481764A GB 1009776 A GB1009776 A GB 1009776A
Authority
GB
United Kingdom
Prior art keywords
nozzle
plug
throat
casing
sleeve
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
GB34817/64A
Inventor
Francis Jeffrey Colville
Norman Roberts
David Morris Brown
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 GB34817/64A priority Critical patent/GB1009776A/en
Priority to GB34818/64A priority patent/GB1009777A/en
Priority to US474795A priority patent/US3352494A/en
Priority to DER41245A priority patent/DE1286334B/en
Priority to FR28342A priority patent/FR1445892A/en
Publication of GB1009776A publication Critical patent/GB1009776A/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
    • F02K1/46—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
    • 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
    • F02K1/08—Varying effective area of jet pipe or nozzle by axially moving or transversely deforming an internal member, e.g. the exhaust cone
    • 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
    • F02K1/08—Varying effective area of jet pipe or nozzle by axially moving or transversely deforming an internal member, e.g. the exhaust cone
    • F02K1/085—Varying effective area of jet pipe or nozzle by axially moving or transversely deforming an internal member, e.g. the exhaust cone by transversely deforming an internal member
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Special Spraying Apparatus (AREA)

Abstract

1,009,776. Jet propulsion nozzles. ROLLS-ROYCE Ltd. Aug. 25, 1964, No. 34817/64. Heading F1J. A supersonic jet propulsion nozzle has a substantially cylindrical nozzle casing assembly and a bulbous plug mounted therein, the plug and casing assembly being relatively movable axially to permit the throat of the nozzle to be disposed either in a position at the downstream end of the casing assembly or in a position upstream of said downstream end, whereby the nozzle may be employed either as a convergent or as a convergent-divergent nozzle, and silencing means for substantially increasing the peripheral area over which the jet gases mix with the ambient air. A gas turbine jet propulsion engine supersonic nozzle 19, Fig. 2, comprises a nozzle casing having an axially slidable cylindrical outer-portion 22 and a fixed inner portion 23. A bulbous plug 25 is supported within the nozzle casing by struts 26 attached to upstream plug portion 30. Casing portion 22 is slidable between positions shown in full and dotted lines to define respectively with plug 25 a convergent or a convergentdivergent flow passage, the throat remaining at 24. Plug portion 30 is attached to a downstream portion 31 by a tube 32 upon which slide sleeves 42, 50. Sleeve 42 is moved by a rod 43 driven by rack and pinion 44, 45 and is pivotally connected by links 38 to a series of pivoted "fingers" 33, 34 forming the central surface of plug 25, such that axial movement of the sleeve causes radial movement of fingers 33, 34 and a variation in the nozzle throat area. Sleeve 50 is pivotally linked to a series of angularly spaced flaps 52, each pivoted on a fixed central portion of plug 25 intermediate each pair of fingers 33, 34, such that axial movement of the sleeve causes flaps 52 to move into or out of the jet stream. In the position shown dotted flaps 52 increase the peripheral area over which the jet stream mixes with ambient air to effect silencing of the nozzle. Outward movement of flaps 52 is accompanied by inward movement of fingers 33, 34 to compensate for the reduction in flow area of throat 24. In a modification, Fig. 4, an axially slidable nozzle casing portion 100 surrounds a plug 103 supported by struts 105, 106 from fixed casing portion 101 so that the nozzle can be set to convergent or convergent-divergent form, as in the previous embodiment. A series of angularly spaced aerofoil members 113 are pivoted at 115 within the plug outer casing 112 and can be moved into the jet stream at the throat 102 by movement of ram actuated sleeve 117 so as to reduce the throat flow area. A series of angularly spaced vanes 107 extend radially from plug 103 at throat 102. Each vane 107 comprises, Fig. 6, a fixed upstream portion 131 and a downstream portion consisting of two pivoted separable parts 132, 133. Actuation of a push rod 134 by way of a ram 147, slidable sleeve 145 and related linkwork causes parts 132, 133 to move to the dotted line position in which ambient air is admitted between parts 132, 133 to mix with the jet stream and effect silencing.
GB34817/64A 1964-08-25 1964-08-25 Supersonic jet propulsion nozzle Expired GB1009776A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB34817/64A GB1009776A (en) 1964-08-25 1964-08-25 Supersonic jet propulsion nozzle
GB34818/64A GB1009777A (en) 1964-08-25 1964-08-25 Supersonic jet propulsion nozzle
US474795A US3352494A (en) 1964-08-25 1965-07-26 Supersonic jet propulsion nozzle
DER41245A DE1286334B (en) 1964-08-25 1965-08-05 Supersonic thrust nozzle for gas turbine jet engines
FR28342A FR1445892A (en) 1964-08-25 1965-08-13 Supersonic jet propulsion nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34817/64A GB1009776A (en) 1964-08-25 1964-08-25 Supersonic jet propulsion nozzle

Publications (1)

Publication Number Publication Date
GB1009776A true GB1009776A (en) 1965-11-10

Family

ID=10370275

Family Applications (2)

Application Number Title Priority Date Filing Date
GB34817/64A Expired GB1009776A (en) 1964-08-25 1964-08-25 Supersonic jet propulsion nozzle
GB34818/64A Expired GB1009777A (en) 1964-08-25 1964-08-25 Supersonic jet propulsion nozzle

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB34818/64A Expired GB1009777A (en) 1964-08-25 1964-08-25 Supersonic jet propulsion nozzle

Country Status (3)

Country Link
US (1) US3352494A (en)
DE (1) DE1286334B (en)
GB (2) GB1009776A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582424A1 (en) * 1992-08-03 1994-02-09 General Electric Company Noise-suppressed exhaust nozzles for jet engines

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598318A (en) * 1970-04-10 1971-08-10 Boeing Co Movable acoustic splitter for nozzle area control and thrust reversal
US3814324A (en) * 1972-06-19 1974-06-04 Gen Electric Propulsion nozzle and actuator system employed therein
US3774868A (en) * 1972-12-11 1973-11-27 G Goetz Integrated nozzle
US4043508A (en) * 1975-12-01 1977-08-23 General Electric Company Articulated plug nozzle
US4039146A (en) * 1975-12-01 1977-08-02 General Electric Company Variable cycle plug nozzle and flap and method of operating same
US4088270A (en) * 1976-03-31 1978-05-09 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Two dimensional wedge/translating shroud nozzle
US4074859A (en) * 1976-11-10 1978-02-21 The United States Of America As Represented By The Secretary Of The Air Force Deformable plug for an aircraft engine exhaust nozzle
US4196856A (en) * 1977-11-25 1980-04-08 The Boeing Company Variable geometry convergent divergent exhaust nozzle
GB2333806B (en) * 1979-08-17 1999-11-10 Rolls Royce Variable configuration final nozzle assembly for a combined rocket/ramjet engine
US4537026A (en) * 1982-04-07 1985-08-27 Rolls-Royce Inc. Variable area nozzles for turbomachines
US5463866A (en) * 1993-12-30 1995-11-07 The Boeing Company Supersonic jet engine installation and method with sound suppressing nozzle
US5884843A (en) * 1996-11-04 1999-03-23 The Boeing Company Engine noise suppression ejector nozzle
US5941065A (en) * 1996-11-04 1999-08-24 The Boeing Company Stowable mixer ejection nozzle
US5908159A (en) * 1997-02-24 1999-06-01 The Boeing Company Aircraft chute ejector nozzle
US7886518B2 (en) * 2006-11-14 2011-02-15 General Electric Company Turbofan engine cowl assembly and method of operating the same
US9828943B2 (en) * 2014-06-09 2017-11-28 United Technologies Corporation Variable area nozzle for gas turbine engine
FR3097016B1 (en) * 2019-06-06 2021-07-23 Safran Aircraft Engines CONFLUENCE STRUCTURE OF A PRIMARY VEIN AND A SECONDARY VEIN IN A DOUBLE-FLOW TURBOMACHINE
US11319832B2 (en) 2020-02-27 2022-05-03 Rolls-Royce North American Technologies Inc. Single movement convergent and convergent-divergent nozzle
US11313320B2 (en) * 2020-02-27 2022-04-26 Rolls-Royce North American Technologies Inc. Exhaust nozzle with centerbody support structure for a gas turbine engine
US11274631B2 (en) 2020-02-27 2022-03-15 Rolls-Royce North American Technologies Inc. Methodology for minimizing aerodynamic buzz in an exhaust nozzle
USD1015134S1 (en) * 2022-02-21 2024-02-20 Jason D. Kerlin Spool head thumb screw

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570629A (en) * 1945-10-05 1951-10-09 Anxionnaz Adjustable pipe for the intake of air and expansion of the driving gases in reactionjet propellers for projectiles and vehicles
GB677973A (en) * 1951-02-22 1952-08-27 Blackburn & Gen Aircraft Ltd Improvements in and relating to variable area nozzles for turbo-jet engine installations
US2788635A (en) * 1953-10-22 1957-04-16 North American Aviation Inc Device for varying a jet engine orifice
BE537645A (en) * 1954-06-10
US2940252A (en) * 1956-02-07 1960-06-14 Boeing Co Gas stream thrust reaction propulsion engines with noise-suppression and thrust-reversing nozzle means
US2845775A (en) * 1956-06-01 1958-08-05 United Aircraft Corp Noise suppressors for jet engines
US3055174A (en) * 1957-01-14 1962-09-25 Boeing Co Retractable noise suppressor for jet engines
US2938335A (en) * 1958-04-14 1960-05-31 Boeing Co Noise suppressor and thrust reverser
GB950288A (en) * 1959-08-18 1964-02-26 Bristol Siddeley Engines Ltd Improvements in nozzles for aircraft propulsion
GB920889A (en) * 1960-11-14 1963-03-13 Rolls Royce Improvements relating to the silencing of gas turbine engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582424A1 (en) * 1992-08-03 1994-02-09 General Electric Company Noise-suppressed exhaust nozzles for jet engines

Also Published As

Publication number Publication date
US3352494A (en) 1967-11-14
DE1286334B (en) 1969-01-02
GB1009777A (en) 1965-11-10

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