GB894299A - Jet propulsion engine low-noise propulsion nozzle with low base drag - Google Patents

Jet propulsion engine low-noise propulsion nozzle with low base drag

Info

Publication number
GB894299A
GB894299A GB31505/58A GB3150558A GB894299A GB 894299 A GB894299 A GB 894299A GB 31505/58 A GB31505/58 A GB 31505/58A GB 3150558 A GB3150558 A GB 3150558A GB 894299 A GB894299 A GB 894299A
Authority
GB
United Kingdom
Prior art keywords
nozzle
tubes
orifice
discharge
orifices
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
GB31505/58A
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.)
Boeing Co
Original Assignee
Boeing Co
Boeing Airplane Co
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 Boeing Co, Boeing Airplane Co filed Critical Boeing Co
Publication of GB894299A publication Critical patent/GB894299A/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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

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

Abstract

894,299. Jet propulsion nozzles. BOEING AIRPLANE CO. Oct. 2, 1958 [Oct. 15, 1957], No. 31505/58. Class 110 (3). A jet propulsion engine noise suppression nozzle comprises at least one pressurechamber through which the engine gases pass to which are attached a plurality of individual rearwardlydirected gas discharge ducts grouped about a central longitudinal axis, the ducts having rearwardly-projecting free portions spaced apart circumferentially and discharge orifices divergently directed in relation to each other so that the slipstream may flow between the jet streams. The propulsion nozzle, Fig. 1, comprises a cone or plug 10 surrounded by a main nozzle duct 14 which terminates in a discharge orifice 18. A cluster of rearwardly-directed discharge tubes 20, 22 surround the orifice 18. The tubes 20, 22 are arranged in two concentric circles with the tubes in one circle radially aligned with the tubes in the other. The tubes have convergentdivergent exits 20a, 22a, and diverge away from the nozzle axis 12. The outward inclination of the orifice direction is approximately proportional to the radial distance of the orifices from the central axis. In a modification, the angularity of the orifice direction may be varied. In another modification, the nozzle orifices are rectangular in section and fed by rectangular ducts. Specifications 831,152, 859,993 and 894,298 are referred to.
GB31505/58A 1957-10-15 1958-10-02 Jet propulsion engine low-noise propulsion nozzle with low base drag Expired GB894299A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US894299XA 1957-10-15 1957-10-15

Publications (1)

Publication Number Publication Date
GB894299A true GB894299A (en) 1962-04-18

Family

ID=22217598

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31505/58A Expired GB894299A (en) 1957-10-15 1958-10-02 Jet propulsion engine low-noise propulsion nozzle with low base drag

Country Status (1)

Country Link
GB (1) GB894299A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392529A (en) * 1965-07-23 1968-07-16 Rolls Royce Aircraft provided with a gas turbine vertical lift engine
DE1300356B (en) * 1966-06-17 1969-07-31 Rolls Royce Thrust nozzle assembly for gas turbine jet engines
US3612212A (en) * 1969-08-11 1971-10-12 Rohr Corp Method and apparatus for suppressing the noise of a jet engine
FR2491149A1 (en) * 1980-09-26 1982-04-02 United Technologies Corp LOBE MIXER FOR GAS TURBINE
US4474259A (en) * 1982-04-26 1984-10-02 The Boeing Company Internally ventilated noise suppressor for jet engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392529A (en) * 1965-07-23 1968-07-16 Rolls Royce Aircraft provided with a gas turbine vertical lift engine
DE1300356B (en) * 1966-06-17 1969-07-31 Rolls Royce Thrust nozzle assembly for gas turbine jet engines
US3612212A (en) * 1969-08-11 1971-10-12 Rohr Corp Method and apparatus for suppressing the noise of a jet engine
FR2491149A1 (en) * 1980-09-26 1982-04-02 United Technologies Corp LOBE MIXER FOR GAS TURBINE
US4474259A (en) * 1982-04-26 1984-10-02 The Boeing Company Internally ventilated noise suppressor for jet engine

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