US2944386A - Device for increasing the impulsion of a fluid, especially applicable as a lift or propulsion device - Google Patents

Device for increasing the impulsion of a fluid, especially applicable as a lift or propulsion device Download PDF

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Publication number
US2944386A
US2944386A US667831A US66783157A US2944386A US 2944386 A US2944386 A US 2944386A US 667831 A US667831 A US 667831A US 66783157 A US66783157 A US 66783157A US 2944386 A US2944386 A US 2944386A
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US
United States
Prior art keywords
fluid
divergent
convergent
lift
impulsion
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
US667831A
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English (en)
Inventor
Bertin Jean Henri
Schmitt Henri Francois
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.)
Bertin Technologies SAS
Original Assignee
Bertin et Cie SA
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Filing date
Publication date
Application filed by Bertin et Cie SA filed Critical Bertin et Cie SA
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Publication of US2944386A publication Critical patent/US2944386A/en
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
    • B64C23/005—Influencing air flow over aircraft surfaces, not otherwise provided for by other means not covered by groups B64C23/02 - B64C23/08, e.g. by electric charges, magnetic panels, piezoelectric elements, static charges or ultrasounds
    • 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
    • F02K1/36—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto having an ejector

Definitions

  • Thisapparatus is characterised by the combination of a convergent tubular member which brings the fluid up to speed and a divergent portion serving to reduce the convergent 1 is induced by the action of the fluid screen discharged from the slot 3.
  • the divergent tube 5 is intended to channel the flow induced through the convergent 1 and the screenissuing from the slot 3, when this screen, after a certain active trajectory through the air, indicated by the arrows F and F, has lost the greater part of its energy and therefore of its eifectiveness.
  • the tube 5 then acts to relay this fluid screen in its action and improves the pressure coupling between the induced i jet and the atmosphere. In addition, this regularisation of.
  • the tube 5 must be coupled to the fluid screen and in view of the large divergence of this screen (half-angle at the apex of,30, for example), its diameter at'the neck must be clearly greater than that of the, neck 2 of the convergent '1 (by, 'to 50%, for' 1 example).
  • the said portion being formed by a fluid screen produced by the discharge of a fluid under pressure through a nozzle in the form of a suitably orientatedslotarranged on the solid convergent tubular member.
  • the present invention has for its object improvements made to this device, in particular with a'view to rendering its use more convenient, more practical and more efiective. r
  • a solid divergent is provided at a certain distance from the convergent so as.
  • this divergent having an intake section suitably adapted to thatoflthe fluid 7 screen and greater than the neck of the convergent from which it is separated by a space in which the fluidrscreen acts alone.
  • Fig. 1 shows in axial cross-section an impulsionincreasing device combined with a solid divergent.
  • Fig. 2 relates to an improvement in the lift device applicable to the casein which the divergent fluid screen is formed'by a liquid.
  • Fig. 1 there is seen at 1 the convergent of the lift device terminating at the neck 2 or very slightly on the certain distance by a tubular divergent member '5, which 5 is usually fairly short, and which is coupled to the convergent 1 by arms 6 and 6'.
  • This tube 5 may comprise a small convergent 7.
  • Fig. 2 shows a lift device of this type, in which the fluid divergent is formed by a liquid passed into the collector 4.
  • a pump'41' driven by a motor 42 brings back this liquid, under pressure, into the collector 4.
  • Jet augmenter comprising a convergent duct bounded by a physical wall and ending with an orifice open tothe atmosphere, a pressure chamber integral with said wall and extending outside said duct in the vicinity of said orifice, means for supplying pressure liquid to said chamber, a slot-like nozzle communicating with said chamber'and adapted to dischargesaid liquid in the form said orifice and facing in a direction diverging slightly 1 from the axis of said duct whereby the jet issuingv from, said nozzle forms a divergent liquid wall extending the convergent physical wall of the duct and bathed by the atmosphere, a divergent duct bounded by a physical wall and substantially coaxial with the convergent duct, said divergent duct extending at a distance downstream of the convergent duct and around the path of the divergent .jet, an annular chamber formed on said divergent duct and having an annular: inlet. facing towards said slot-like,

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
US667831A 1956-06-25 1957-06-25 Device for increasing the impulsion of a fluid, especially applicable as a lift or propulsion device Expired - Lifetime US2944386A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR864028X 1956-06-25

Publications (1)

Publication Number Publication Date
US2944386A true US2944386A (en) 1960-07-12

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ID=9343612

Family Applications (1)

Application Number Title Priority Date Filing Date
US667831A Expired - Lifetime US2944386A (en) 1956-06-25 1957-06-25 Device for increasing the impulsion of a fluid, especially applicable as a lift or propulsion device

Country Status (3)

Country Link
US (1) US2944386A (enrdf_load_stackoverflow)
DE (1) DE1049712B (enrdf_load_stackoverflow)
GB (1) GB864028A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230702A (en) * 1959-10-16 1966-01-25 Bertin & Cie Jet diffuser usable as a propeller shroud
US4272499A (en) * 1979-11-28 1981-06-09 Lone Star Steel Company Process and apparatus for the removal of particulate matter and reactive or water soluble gases from carrier gases
WO1983003777A1 (en) * 1982-04-26 1983-11-10 Western Electric Company, Inc. Vapor-phase axial deposition system
US4428762A (en) 1982-04-26 1984-01-31 Western Electric Company, Inc. Vapor-phase axial deposition system
US4435199A (en) 1982-04-26 1984-03-06 Western Electric Co., Inc. Exhaust system for a vapor deposition chamber

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE223896C (enrdf_load_stackoverflow) *
US284962A (en) * 1883-09-11 William huston
US1415406A (en) * 1917-06-01 1922-05-09 British Westinghouse Electric Elastic-fluid-operated ejector
US2000762A (en) * 1933-10-26 1935-05-07 Gen Electric Fluid jet pump
US2379436A (en) * 1942-05-20 1945-07-03 Distillation Products Inc Method and apparatus for producing vacuums

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE223896C (enrdf_load_stackoverflow) *
US284962A (en) * 1883-09-11 William huston
US1415406A (en) * 1917-06-01 1922-05-09 British Westinghouse Electric Elastic-fluid-operated ejector
US2000762A (en) * 1933-10-26 1935-05-07 Gen Electric Fluid jet pump
US2379436A (en) * 1942-05-20 1945-07-03 Distillation Products Inc Method and apparatus for producing vacuums

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230702A (en) * 1959-10-16 1966-01-25 Bertin & Cie Jet diffuser usable as a propeller shroud
US4272499A (en) * 1979-11-28 1981-06-09 Lone Star Steel Company Process and apparatus for the removal of particulate matter and reactive or water soluble gases from carrier gases
WO1983003777A1 (en) * 1982-04-26 1983-11-10 Western Electric Company, Inc. Vapor-phase axial deposition system
US4428762A (en) 1982-04-26 1984-01-31 Western Electric Company, Inc. Vapor-phase axial deposition system
US4435199A (en) 1982-04-26 1984-03-06 Western Electric Co., Inc. Exhaust system for a vapor deposition chamber

Also Published As

Publication number Publication date
GB864028A (en) 1961-03-29
DE1049712B (enrdf_load_stackoverflow) 1959-01-29

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