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GB744196A - Improvements in or relating to silencing means - Google Patents

Improvements in or relating to silencing means

Info

Publication number
GB744196A
GB744196A GB2228253A GB2228253A GB744196A GB 744196 A GB744196 A GB 744196A GB 2228253 A GB2228253 A GB 2228253A GB 2228253 A GB2228253 A GB 2228253A GB 744196 A GB744196 A GB 744196A
Authority
GB
United Kingdom
Prior art keywords
section
rectangular
cross
outlet end
outlet
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
GB2228253A
Inventor
Ferdinand Basil Greatrex
Frederick Reginald Murray
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 GB2228253A priority Critical patent/GB744196A/en
Publication of GB744196A publication Critical patent/GB744196A/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
    • F02K1/40—Nozzles having means for dividing the jet into a plurality of partial jets or having an elongated cross-section outlet

Landscapes

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

Abstract

744,196. Silencers for exhaust gases. ROLLS-ROYCE Ltd. Oct. 14, 1954 [Aug. 12, 1953]. No. 22282/53. Class 7(2) [Also in Group XXVI] - A conduit 10; e.g, the jet pipe of a jet propulsion engine, through which the high velocity gas flow is of a non-pulsating nature, has an outlet portion 13 of which the periphery increases from the inlet towards the outlet end, and the - crosssectional area in a plane 'normal to the mean direction of the gas flow either remains constant or decreases immediately or after an initial constant portion to provide a throat having a cross-sectional area less than that of the inlet end of the portion 13. The outlet end may be rectangular, oval or elliptical, and there may be a further section of' increasing crosssectional area downstream of the throat thereby providing a convergent-divergent nozzle. As shown, the portion 13 changes gradually from circular cross-section at the inlet end to a rectangular cross-section at the outlet end, the length of the rectangular section being 3. 6 or 10 times the width; the sides of the rectangular end are inclined inwardly as at 14 and that end is divided by struts 15 of trapezoidal form into six apertures 18, square in cross-section. In a modification (Fig. 2, not shown), the walls of the apertures 18 are frusto-conical giving rise to corrugations in the portion 13.
GB2228253A 1953-08-12 1953-08-12 Improvements in or relating to silencing means Expired GB744196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2228253A GB744196A (en) 1953-08-12 1953-08-12 Improvements in or relating to silencing means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2228253A GB744196A (en) 1953-08-12 1953-08-12 Improvements in or relating to silencing means

Publications (1)

Publication Number Publication Date
GB744196A true GB744196A (en) 1956-02-01

Family

ID=10176858

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2228253A Expired GB744196A (en) 1953-08-12 1953-08-12 Improvements in or relating to silencing means

Country Status (1)

Country Link
GB (1) GB744196A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944392A (en) * 1956-03-29 1960-07-12 United Aircraft Corp Hollow vane exhaust silencer effecting thrust generation
US2976681A (en) * 1957-09-17 1961-03-28 Boeing Co Clam shell thrust reversers with noise suppressors
US3025667A (en) * 1957-07-22 1962-03-20 Boeing Co Rotary turret reversible thrust noise suppression jet engine nozzles
US3027713A (en) * 1958-01-31 1962-04-03 United Aircraft Corp Slotted jet engine noise suppressor
US3033494A (en) * 1958-08-01 1962-05-08 United Aircraft Corp Jet wake noise intensity pattern control means
US3063661A (en) * 1958-03-12 1962-11-13 United Aircraft Corp Ducted fan engine
US3092205A (en) * 1957-09-02 1963-06-04 Rolls Royce Jet noise suppressor nozzle
US3095166A (en) * 1963-06-25 briggs
US3113636A (en) * 1959-10-09 1963-12-10 Rolls Royce Jet noise silencing appartus for an aircraft
US3212700A (en) * 1962-01-12 1965-10-19 Bertin & Cie Ejector devices having slot-like inducing nozzles, especially for sustentation
US4109750A (en) * 1977-05-24 1978-08-29 Lockheed Aircraft Corporation Zeno duct sound attenuating means
USRE31275E (en) * 1977-05-24 1983-06-14 Lockheed Corporation Zeno duct sound attenuating means
WO2006049552A1 (en) * 2004-11-05 2006-05-11 Volvo Aero Corporation Outlet device for a jet engine and a craft comprising such an outlet device
EP1712769A1 (en) * 2005-04-14 2006-10-18 Snecma Exhaust nozzle of an aircraft engine
US7533517B2 (en) 2005-04-14 2009-05-19 Snecma Exhaust nozzle for an engine of a flying craft

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095166A (en) * 1963-06-25 briggs
US2944392A (en) * 1956-03-29 1960-07-12 United Aircraft Corp Hollow vane exhaust silencer effecting thrust generation
US3025667A (en) * 1957-07-22 1962-03-20 Boeing Co Rotary turret reversible thrust noise suppression jet engine nozzles
US3092205A (en) * 1957-09-02 1963-06-04 Rolls Royce Jet noise suppressor nozzle
US2976681A (en) * 1957-09-17 1961-03-28 Boeing Co Clam shell thrust reversers with noise suppressors
US3027713A (en) * 1958-01-31 1962-04-03 United Aircraft Corp Slotted jet engine noise suppressor
US3063661A (en) * 1958-03-12 1962-11-13 United Aircraft Corp Ducted fan engine
DE1299650B (en) * 1958-08-01 1969-07-24 United Aircraft Corp Sound-dampened thrust nozzle of a gas turbine jet engine
US3033494A (en) * 1958-08-01 1962-05-08 United Aircraft Corp Jet wake noise intensity pattern control means
US3113636A (en) * 1959-10-09 1963-12-10 Rolls Royce Jet noise silencing appartus for an aircraft
US3212700A (en) * 1962-01-12 1965-10-19 Bertin & Cie Ejector devices having slot-like inducing nozzles, especially for sustentation
US4109750A (en) * 1977-05-24 1978-08-29 Lockheed Aircraft Corporation Zeno duct sound attenuating means
USRE31275E (en) * 1977-05-24 1983-06-14 Lockheed Corporation Zeno duct sound attenuating means
WO2006049552A1 (en) * 2004-11-05 2006-05-11 Volvo Aero Corporation Outlet device for a jet engine and a craft comprising such an outlet device
US8215096B2 (en) 2004-11-05 2012-07-10 Volvo Aero Corporation Outlet device for a jet engine and a craft comprising such an outlet device
EP1712769A1 (en) * 2005-04-14 2006-10-18 Snecma Exhaust nozzle of an aircraft engine
FR2884560A1 (en) * 2005-04-14 2006-10-20 Snecma Moteurs Sa EJECTION TUBE OF A FLYING ENGINE ENGINE
JP2006290341A (en) * 2005-04-14 2006-10-26 Snecma Exhaust nozzle for airplane engine
US7533517B2 (en) 2005-04-14 2009-05-19 Snecma Exhaust nozzle for an engine of a flying craft
JP4711876B2 (en) * 2005-04-14 2011-06-29 スネクマ Exhaust nozzle for airplane engine

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