GB868868A - Improvements in or relating to jet propulsion nozzle arrangements - Google Patents

Improvements in or relating to jet propulsion nozzle arrangements

Info

Publication number
GB868868A
GB868868A GB1576/59A GB157659A GB868868A GB 868868 A GB868868 A GB 868868A GB 1576/59 A GB1576/59 A GB 1576/59A GB 157659 A GB157659 A GB 157659A GB 868868 A GB868868 A GB 868868A
Authority
GB
United Kingdom
Prior art keywords
segments
nozzle
jet
segment
pivot
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
GB1576/59A
Inventor
Rowan Herbert Colley
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 GB1576/59A priority Critical patent/GB868868A/en
Priority to FR814696A priority patent/FR1247562A/en
Priority to US889A priority patent/US2997842A/en
Publication of GB868868A publication Critical patent/GB868868A/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
    • F02K1/11—Varying effective area of jet pipe or nozzle by means of pivoted eyelids

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Advancing Webs (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

868,868. Jet-propulsion nozzles. ROLLSROYCE Ltd. Jan. 7, 1960 [Jan. 15, 1959], No. 1576/59. Class 110 (3). A jet-propulsion nozzle comprising a fixed nozzle portion, a plurality of arcuate longitudinally tapering nozzle segments of flexible sheet material pivotally mounted within and closely contacting and conforming to the shape of the fixed nozzle portion and means to pivot the segments to vary the outlet area of the nozzle, has each segment mounted so that a degree of free radial movement relative to the pivoting axis is permitted in order to allow the segments to be held by the pressure of the jet gases in sealing contact with the fixed nozzle portion or means carried thereby. The jet pipe 10 is provided at its outlet end with an adjustable area discharge nozzle comprising a fixed nozzle portion 11 including an end ring 12, and a pair of longitudinally tapering adjustable nozzle segments 13 mounted within the portion 11. Each segment is mounted at each side on a pivot-pin 14 itself mounted in the portion 11. The portion 11 has an enlarged diameter portion 15 formed at its down-stream end with a lip 16 which closely conforms to the shape of and forms a seal with the adjacent surfaces of the nozzle segments 13. Each segment is provided with a pair of diametrically-spaced elongated slots 17 which engage the pivot-pins 14 to allow each segment 13 a degree of free radial movement relative to the pivot axis. The arrangement is such that the jet gases force the segments 13 radially outwards into contact with the lip 16. To assist the sealing, the nozzle segments are formed of thin flexible sheet metal whose flexibility and lightness is increased by holes 18 arranged inwardly of the seal between the lip 16 and the segments 13. The segments 13 are moved by rams 19. In a modification, the rams are disposed transversely of the fixed nozzle portion. The segments may be operated by screw-thread arrangements operated by an air motor if it is desired to place the nozzle in a number of positions between the maximum and minimum area positions.
GB1576/59A 1959-01-15 1959-01-15 Improvements in or relating to jet propulsion nozzle arrangements Expired GB868868A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1576/59A GB868868A (en) 1959-01-15 1959-01-15 Improvements in or relating to jet propulsion nozzle arrangements
FR814696A FR1247562A (en) 1959-01-15 1959-12-31 Jet Nozzles for Jet Engines
US889A US2997842A (en) 1959-01-15 1960-01-06 Jet nozzle arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1576/59A GB868868A (en) 1959-01-15 1959-01-15 Improvements in or relating to jet propulsion nozzle arrangements

Publications (1)

Publication Number Publication Date
GB868868A true GB868868A (en) 1961-05-25

Family

ID=9724354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1576/59A Expired GB868868A (en) 1959-01-15 1959-01-15 Improvements in or relating to jet propulsion nozzle arrangements

Country Status (3)

Country Link
US (1) US2997842A (en)
FR (1) FR1247562A (en)
GB (1) GB868868A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110050A (en) * 1974-09-07 1992-05-05 Rolls-Royce (1971) Limited Gas turbine engine nozzle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230620B (en) * 1963-01-09 1966-12-15 Rolls Royce Vertical lift engine system for aircraft
FR1422203A (en) * 1964-11-03 1965-12-24 Snecma Improvement in section regulation of silencer effect nozzles
US5833140A (en) * 1996-12-12 1998-11-10 United Technologies Corporation Variable geometry exhaust nozzle for a turbine engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667226A (en) * 1946-05-18 1954-01-26 Fairey Aviat Co Ltd Jet-driven helicopter rotor
US2738644A (en) * 1950-04-15 1956-03-20 Gen Electric Surge control for axial flow compressors
GB721558A (en) * 1952-04-10 1955-01-05 Rolls Royce Improvements relating to jet nozzles for jet propulsion units

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110050A (en) * 1974-09-07 1992-05-05 Rolls-Royce (1971) Limited Gas turbine engine nozzle

Also Published As

Publication number Publication date
US2997842A (en) 1961-08-29
FR1247562A (en) 1960-12-02

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