US2906089A - Air intake control for jet propulsion units - Google Patents

Air intake control for jet propulsion units Download PDF

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Publication number
US2906089A
US2906089A US35866653A US2906089A US 2906089 A US2906089 A US 2906089A US 35866653 A US35866653 A US 35866653A US 2906089 A US2906089 A US 2906089A
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US
United States
Prior art keywords
air intake
jet propulsion
propulsion units
intake control
air
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 - Lifetime
Application number
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English (en)
Inventor
Kadosch Marcel
Jean H Bertin
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.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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 SNECMA SAS filed Critical SNECMA SAS
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Publication of US2906089A publication Critical patent/US2906089A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/148—Blades with variable camber, e.g. by ejection of fluid
    • 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
    • F02K1/28—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto using fluid jets to influence the jet flow
    • 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
    • F02K1/28—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto using fluid jets to influence the jet flow
    • F02K1/32—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto using fluid jets to influence the jet flow for reversing thrust
    • 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
    • F02K1/54—Nozzles having means for reversing jet thrust
    • F02K1/64—Reversing fan flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
    • F02K7/02—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
    • F02K7/02—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet
    • F02K7/04—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet with resonant combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
    • F02K7/02—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet
    • F02K7/06—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet with combustion chambers having valves
    • F02K7/067—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet with combustion chambers having valves having aerodynamic valves
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0536—Highspeed fluid intake means [e.g., jet engine intake]

Definitions

  • the present invention relates to the control of air intakes of jet propulsion unit.
  • An object of this invention is to provide aerodynamically operating means for varying the effective area and outline of an air intake casing without requiring displacement of movable members in said air intake.
  • a further object of this invention is to adapt the air intake to various flight conditions.
  • the invention enables the cross-section of the air intake passage and/or its internal shape to be varied according to whether the speed of travel through the air is subsonic or supersonic.
  • the auxiliary jet When the auxiliary jet is not in operation, the full physical cross-section of the air intake passage is available for the quantity of air passing into the reaction unit, which is satisfactory for flight at low speed.
  • this auxiliary jet when the auxiliary jet is blown into the air intake opening, this auxiliary jet causes a fluid wall to be substituted for the solid wall of the air intake passage, so that the cross-section available for the air drawn in is reduced.
  • the fluid wall takes, in its proper flow, the form of a convergent-divergent fluid dischargenozzle and the passage of the air intake is thus adapted to supersonic flight.
  • the fairing 1 of the air intake of a reaction unit which is supposed in this example to be a ram-jet unit, surrounds a streamlined body 2 such that the general outline, from the forward end up to the neighborhood of the maximum cross-section of this streamlined body, is slightly convergent, only to become later more strongly divergent up to the combustion chamber 3.
  • Blowing slots extended at 4 on the internal periphery of the fairing, and at 5 on the external periphery of the streamlined body. These slots are so shaped as to expand the fluid which passes through them, thus producing a jet at a high dynamic pressure.
  • the slots may have a convergentdivergent form; they are arranged at the beginning of the divergent portion of the reactor air intake and may be supplied with a suitable auxiliary fluid having a total pressure greater than the static pressure of the air flowing through the intake opening of the reaction unit.
  • the slots may be supplied, for example, with compressed air obtained from a small compressor 3a driven by a suitable auxiliary engine, for example by a gas turbine 3b.
  • the supply of air to the slots is controlled by a valve 7.
  • the slots When the flow of air in front of the ram-jet unit is subsonic, the slots are not supplied with air and the air intake opening is divergent. When the flow is supersonic, the slots are supplied with compressed air and there is thus obtained a convergent-divergent discharge-nozzle by the action of the blowing jet or jets (along the arrows shown at the top) which constitute fluid walls the shape of which may be varied at will and which permit the presence of a subsonic flow at the point at which the main flow becomes divergent.
  • an aerodynamically-operating device for adapting said air intake to supersonic flow, comprising a circular slotlike nozzle extending through each of said walls and opening towards the interior of said air intake in a forwardly inclined direction, said slot-like nozzles being substantially opposite each other, and controllable means for supplying pressure fluid to said nozzles to form screenlike jets projecting into said intake from said walls whereby a convergent-divergent duct with fluid walls is substi tuted for said divergent passage with physical walls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Testing Of Engines (AREA)
US35866653 1951-01-04 1953-06-01 Air intake control for jet propulsion units Expired - Lifetime US2906089A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR970090X 1951-01-04
FR767513X 1952-12-12

Publications (1)

Publication Number Publication Date
US2906089A true US2906089A (en) 1959-09-29

Family

ID=31979954

Family Applications (1)

Application Number Title Priority Date Filing Date
US35866653 Expired - Lifetime US2906089A (en) 1951-01-04 1953-06-01 Air intake control for jet propulsion units

Country Status (4)

Country Link
US (1) US2906089A (fr)
DE (1) DE970090C (fr)
FR (3) FR1030483A (fr)
GB (2) GB757496A (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047208A (en) * 1956-09-13 1962-07-31 Sebac Nouvelle Sa Device for imparting movement to gases
US3086357A (en) * 1959-04-30 1963-04-23 Mithras Inc Supersonic flow control device
US3259065A (en) * 1959-04-30 1966-07-05 Massachusetts Inst Technology Shock wave inducing means for supersonic vehicles
US3446223A (en) * 1966-02-04 1969-05-27 Lockheed Aircraft Corp Air intake for gas turbine engines
US3623668A (en) * 1968-03-04 1971-11-30 Gen Electric Wash manifold
US3643901A (en) * 1970-05-27 1972-02-22 Isidor C Patapis Ducted spike diffuser
US3966355A (en) * 1975-06-24 1976-06-29 Westinghouse Electric Corporation Steam turbine extraction system
US4161281A (en) * 1976-08-30 1979-07-17 Erb Elisha Pneumatic nebulizer and method
US4261511A (en) * 1978-08-07 1981-04-14 Erb Elisha Nebulizer and method
US6260567B1 (en) * 1997-07-22 2001-07-17 The Boeing Company Mission adaptive inlet
US20080315042A1 (en) * 2007-06-20 2008-12-25 General Electric Company Thrust generator for a propulsion system
US20090165864A1 (en) * 2007-12-26 2009-07-02 Rolls-Royce North American Technologies, Inc. Supersonic inlet
US20090288711A1 (en) * 2008-05-21 2009-11-26 Alvi Farrukh S Microjet creation and control of shock waves
US20140248119A1 (en) * 2012-10-01 2014-09-04 United Technologies Corporation Bifurcated Inlet Scoop for Gas Turbine Engine
US20160052621A1 (en) * 2009-07-10 2016-02-25 Peter Ireland Energy efficiency improvements for turbomachinery

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Publication number Priority date Publication date Assignee Title
DE1073242B (de) * 1960-01-14 Power Jets (Research &. Develop ment) Limited London Schubdüse fur Strahlantrieb
FR1043343A (fr) * 1952-06-05 1953-11-09 Snecma Dispositif de régulation ou de contrôle d'un écoulement tournant
CH357923A (fr) * 1952-06-05 1961-10-31 Snecma Propulseur à réaction pourvu d'un dispositif de réglage de la section du jet propulsif
DE1045728B (de) * 1953-07-15 1958-12-04 Snecma Verbrennungseinrichtung
DE1083600B (de) * 1954-02-11 1960-06-15 Snecma Vorrichtung zum Regeln des wirksamen Querschnittes der Duese eines Rueckstossantriebes
US2807933A (en) * 1954-04-01 1957-10-01 Martin Peter Combustion chambers
US2933890A (en) * 1955-01-20 1960-04-26 Boeing Co Nozzle closing jet deflectors
US2791088A (en) * 1955-03-02 1957-05-07 Gen Electric Device for thrust spoiling and thrust reversal
US2957306A (en) * 1955-06-16 1960-10-25 John S Attinello Gas jets for controlling entrance and/or exit flow effective diameter
US3029011A (en) * 1955-10-13 1962-04-10 Bristol Siddeley Engines Ltd Rotary compressors or turbines
US2885856A (en) * 1956-03-23 1959-05-12 Curtiss Wright Corp Apparatus for increasing compressor pressure ratios in a gas turbine engine
DE1117815B (de) * 1956-04-09 1961-11-23 Bertin & Cie Turbomaschine
US3109284A (en) * 1956-06-14 1963-11-05 Power Jets Res & Dev Ltd Discharge nozzles for propulsive jets
US3020714A (en) * 1956-07-03 1962-02-13 Snecma Device for controlling the jet of a reaction propulsion motor
CH351801A (fr) * 1956-07-03 1961-01-31 Snecma Propulseur à réaction
DE1048092B (de) * 1956-07-03 1958-12-31 Snecma Verfahren und Vorrichtung zur Regelung des Querschnittes einer Ausstossduese von Strahltriebwerken
FR1155971A (fr) * 1956-07-11 1958-05-12 Snecma Perfectionnement aux propulseurs à réaction à plusieurs flux
GB820059A (en) * 1956-07-30 1959-09-16 Bristol Aero Engines Ltd Improvements in or relating to jet propulsion nozzles
US3002343A (en) * 1956-10-29 1961-10-03 Aerojet General Co Thrust-reversing mechanism for jet aircraft
US2968149A (en) * 1957-04-26 1961-01-17 Chance Vought Aircraft Inc Flight control means
DE1123919B (de) * 1957-08-14 1962-02-15 Snecma Vorrichtung zur Stabilisierung und Steuerung von lotrecht startenden und landenden Luftfahrzeugen
FR1182810A (fr) * 1957-09-16 1959-06-30 Snecma Perfectionnements aux tuyères d'éjection à section réglable
DE1207216B (de) * 1959-09-07 1965-12-16 Short Brothers & Harland Ltd Flugregelanlage fuer lotrecht startende und landende Luftfahrzeuge
DE1275840B (de) * 1961-01-12 1968-08-22 Bristol Siddeley Engines Ltd Gasturbinen-Strahltriebwerk mit schwenkbarer Strahlduese
DE1258195B (de) * 1962-03-12 1968-01-04 Gen Electric Antriebsanlage mit einem Gasturbinenhauptstrahltriebwerk
DE1283600B (de) * 1964-12-09 1968-11-21 Ver Flugtechnische Werke Staustrahltriebwerk mit einem in seinem Innern angeordneten intermittierenden Strahltriebwerk
US3450349A (en) * 1965-03-30 1969-06-17 Maurice Hamon Flow nozzle with variable coefficient of efflux
FR1483743A (fr) * 1965-12-02 1967-06-09 Snecma Turbomachine à compresseur contrarotatif
US3726604A (en) * 1971-10-13 1973-04-10 Gen Motors Corp Cooled jet flap vane
US4214441A (en) * 1978-09-12 1980-07-29 The United States Of America As Represented By The Secretary Of The Navy Infrared suppressor device
DE3301355C2 (de) * 1983-01-18 1984-11-08 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Starthilfeeinrichtung für eine Hochdruckbrennkammer
US4624104A (en) * 1984-05-15 1986-11-25 A/S Kongsberg Vapenfabrikk Variable flow gas turbine engine
US4674275A (en) * 1984-05-15 1987-06-23 Sigmunn Stroem Method for varying the cross-sectional flow area in a radial gas turbine inlet
GB2180299A (en) * 1985-06-20 1987-03-25 Khalil Aldoss Taha Pulsejet
GB8717584D0 (en) * 1987-07-24 1987-09-03 Friedrich T E Jet engine noise suppression arrangement
US5205119A (en) * 1991-06-14 1993-04-27 Aerojet-General Corporation Ejector ramjet
US5904320A (en) * 1994-07-14 1999-05-18 Northrop Gunman Corporation Blockerless thrust reverser
US5713537A (en) * 1995-12-11 1998-02-03 Northrop Grumman Corporation Blockerless thrust reverser
FR2883604B1 (fr) 2005-03-23 2010-03-12 Snecma Moteurs Systeme de deviation d'un flux de gaz dans une tuyere

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GB439805A (en) * 1933-06-07 1935-12-06 Rene Leduc Improvements in jet propulsion apparatus for aircraft, projectiles and turbine apparatus
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FR50033E (fr) * 1938-07-05 1939-11-10 Procédé de transformation de l'énergie calorifique en énergie cinétique ou potentielle
US2409433A (en) * 1943-09-10 1946-10-15 Goodrich Co B F Duct throttle
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US2577919A (en) * 1947-07-22 1951-12-11 Snecma Association on flying machine of compressor-jet units with ramjet units
US2612749A (en) * 1946-04-11 1952-10-07 Tenney Resonant pulse jet device with restricted flow passage
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US2631425A (en) * 1948-09-11 1953-03-17 Bofors Ab Compression nozzle for ram-jet engines
US2632295A (en) * 1943-06-28 1953-03-24 Lockheed Aircraft Corp Inlet ram for power plants
US2663993A (en) * 1945-10-10 1953-12-29 Westinghouse Electric Corp Deicing apparatus
US2692800A (en) * 1951-10-08 1954-10-26 Gen Electric Nozzle flow control
US2705863A (en) * 1950-06-30 1955-04-12 Curtiss Wright Corp Jet engine with adjustable air inlet capture area
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Publication number Priority date Publication date Assignee Title
GB439805A (en) * 1933-06-07 1935-12-06 Rene Leduc Improvements in jet propulsion apparatus for aircraft, projectiles and turbine apparatus
FR779655A (fr) * 1934-01-02 1935-04-10 Procédé de transformation de l'énergie calorifique en énergie cinétique ou potentielle
GB444103A (en) * 1936-01-13 1936-03-13 Babcock & Wilcox Ltd Method of and means for controlling the flow of a gaseous fluid in a conduit, duct or the like
FR50033E (fr) * 1938-07-05 1939-11-10 Procédé de transformation de l'énergie calorifique en énergie cinétique ou potentielle
US2632295A (en) * 1943-06-28 1953-03-24 Lockheed Aircraft Corp Inlet ram for power plants
US2409433A (en) * 1943-09-10 1946-10-15 Goodrich Co B F Duct throttle
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
US2663993A (en) * 1945-10-10 1953-12-29 Westinghouse Electric Corp Deicing apparatus
US2612749A (en) * 1946-04-11 1952-10-07 Tenney Resonant pulse jet device with restricted flow passage
US2577919A (en) * 1947-07-22 1951-12-11 Snecma Association on flying machine of compressor-jet units with ramjet units
US2628473A (en) * 1948-05-03 1953-02-17 Frye Jack Stationary power plant having radially and axially displaced jet engines
US2631425A (en) * 1948-09-11 1953-03-17 Bofors Ab Compression nozzle for ram-jet engines
US2705863A (en) * 1950-06-30 1955-04-12 Curtiss Wright Corp Jet engine with adjustable air inlet capture area
BE503064A (fr) * 1951-05-10 1900-01-01
US2692800A (en) * 1951-10-08 1954-10-26 Gen Electric Nozzle flow control
US2763984A (en) * 1954-09-17 1956-09-25 Snecma Device for regulating the effective cross-section of a discharge-nozzle

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3047208A (en) * 1956-09-13 1962-07-31 Sebac Nouvelle Sa Device for imparting movement to gases
US3086357A (en) * 1959-04-30 1963-04-23 Mithras Inc Supersonic flow control device
US3259065A (en) * 1959-04-30 1966-07-05 Massachusetts Inst Technology Shock wave inducing means for supersonic vehicles
US3446223A (en) * 1966-02-04 1969-05-27 Lockheed Aircraft Corp Air intake for gas turbine engines
US3623668A (en) * 1968-03-04 1971-11-30 Gen Electric Wash manifold
US3643901A (en) * 1970-05-27 1972-02-22 Isidor C Patapis Ducted spike diffuser
US3966355A (en) * 1975-06-24 1976-06-29 Westinghouse Electric Corporation Steam turbine extraction system
US4161282A (en) * 1976-08-30 1979-07-17 Erb Elisha Microcapillary nebulizer and method
US4161281A (en) * 1976-08-30 1979-07-17 Erb Elisha Pneumatic nebulizer and method
US4261511A (en) * 1978-08-07 1981-04-14 Erb Elisha Nebulizer and method
US6260567B1 (en) * 1997-07-22 2001-07-17 The Boeing Company Mission adaptive inlet
US20080315042A1 (en) * 2007-06-20 2008-12-25 General Electric Company Thrust generator for a propulsion system
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Also Published As

Publication number Publication date
DE970090C (de) 1958-08-21
FR1030483A (fr) 1953-06-15
GB767513A (en) 1957-02-06
FR63348E (fr) 1955-09-13
GB757496A (en) 1956-09-19
FR62595E (fr) 1955-06-15

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