IT1135607B - AERODYNAMIC RESISTANCE REDUCING SHIP - Google Patents

AERODYNAMIC RESISTANCE REDUCING SHIP

Info

Publication number
IT1135607B
IT1135607B IT19946/81A IT1994681A IT1135607B IT 1135607 B IT1135607 B IT 1135607B IT 19946/81 A IT19946/81 A IT 19946/81A IT 1994681 A IT1994681 A IT 1994681A IT 1135607 B IT1135607 B IT 1135607B
Authority
IT
Italy
Prior art keywords
bypass
exit
exhaust
exhaust system
stream
Prior art date
Application number
IT19946/81A
Other languages
Italian (it)
Other versions
IT8119946A0 (en
Inventor
Daniel John Lahti
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IT8119946A0 publication Critical patent/IT8119946A0/en
Application granted granted Critical
Publication of IT1135607B publication Critical patent/IT1135607B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
    • F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
    • F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D29/00—Power-plant nacelles, fairings, or cowlings
    • B64D29/02—Power-plant nacelles, fairings, or cowlings associated with wings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
    • B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
    • 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
    • F02K1/52—Nozzles specially constructed for positioning adjacent to another nozzle or to a fixed member, e.g. fairing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/20—Boundary layer controls by passively inducing fluid flow, e.g. by means of a pressure difference between both ends of a slot or duct
    • 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
    • Y02T50/10—Drag reduction

Abstract

A wind-mounted gas turbofan engine 10 is provided with a bypass exhaust system that reduces airflow drag during subsonic aircraft flight operation by first, inwardly curving the exhaust system exit 28 to turn the bypass flow away from the airplane wing; second, by predetermining the location of a nozzle throat within the bypass stream to control exit exhaust pressure so as to match outside air pressure and third, by decreasing the diameter of a portion of the engine core casing 18 just downstream of the bypass exhaust stream exit referenced at 29 in phantom. <IMAGE>
IT19946/81A 1980-03-03 1981-02-24 AERODYNAMIC RESISTANCE REDUCING SHIP IT1135607B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12677980A 1980-03-03 1980-03-03

Publications (2)

Publication Number Publication Date
IT8119946A0 IT8119946A0 (en) 1981-02-24
IT1135607B true IT1135607B (en) 1986-08-27

Family

ID=22426613

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19946/81A IT1135607B (en) 1980-03-03 1981-02-24 AERODYNAMIC RESISTANCE REDUCING SHIP

Country Status (6)

Country Link
JP (1) JPS56143330A (en)
CA (1) CA1185101A (en)
DE (1) DE3107496A1 (en)
FR (1) FR2477100B1 (en)
GB (1) GB2071769B (en)
IT (1) IT1135607B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU555526B2 (en) * 1982-10-29 1986-09-25 General Electric Company Aircraft engine nacelle
FR2916737B1 (en) * 2007-06-01 2010-05-28 Airbus France AIRCRAFT ENGINE ASSEMBLY WITH SLIDING CARGO.
US9181899B2 (en) * 2008-08-27 2015-11-10 General Electric Company Variable slope exhaust nozzle
US9810178B2 (en) 2015-08-05 2017-11-07 General Electric Company Exhaust nozzle with non-coplanar and/or non-axisymmetric shape

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1211192A (en) * 1964-07-01 1970-11-04 Gen Electric Improvements in low drag exhaust nozzle and nacelle arrangement for turbofan engines
US3670964A (en) * 1971-01-18 1972-06-20 Gen Motors Corp Jet nozzle
GB1420625A (en) * 1972-08-10 1976-01-07 Rolls Royce Pitch varying mechanism for a variable pitch fan or propeller
US3896615A (en) * 1973-02-08 1975-07-29 United Aircraft Corp Gas turbine engine for subsonic flight
US3881315A (en) * 1973-03-19 1975-05-06 Gen Electric Fan duct flow deflector
CA1020365A (en) * 1974-02-25 1977-11-08 James E. Johnson Modulating bypass variable cycle turbofan engine
DE2512082A1 (en) * 1974-03-26 1975-10-09 Rolls Royce 1971 Ltd GAS TURBINE JET
GB1522558A (en) * 1976-04-05 1978-08-23 Rolls Royce Duct linings

Also Published As

Publication number Publication date
DE3107496A1 (en) 1981-12-24
JPS56143330A (en) 1981-11-09
CA1185101A (en) 1985-04-09
FR2477100B1 (en) 1986-03-21
GB2071769B (en) 1984-08-22
DE3107496C2 (en) 1989-12-07
IT8119946A0 (en) 1981-02-24
GB2071769A (en) 1981-09-23
FR2477100A1 (en) 1981-09-04
JPH0310560B2 (en) 1991-02-13

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19980225