GB623049A - Improvements in means for removing the boundary layer of flow appearing on the surfaces of aircraft - Google Patents

Improvements in means for removing the boundary layer of flow appearing on the surfaces of aircraft

Info

Publication number
GB623049A
GB623049A GB29266/46A GB2926646A GB623049A GB 623049 A GB623049 A GB 623049A GB 29266/46 A GB29266/46 A GB 29266/46A GB 2926646 A GB2926646 A GB 2926646A GB 623049 A GB623049 A GB 623049A
Authority
GB
United Kingdom
Prior art keywords
aircraft
boundary layer
aperture
air intake
compressor
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
GB29266/46A
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.)
SVENSKA TURBINFAB AB
Original Assignee
SVENSKA TURBINFAB AB
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 SVENSKA TURBINFAB AB filed Critical SVENSKA TURBINFAB AB
Publication of GB623049A publication Critical patent/GB623049A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/01—Boundary layer ingestion [BLI] propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
    • B64C21/06—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for sucking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/06—Boundary layer controls by explicitly adjusting fluid flow, e.g. by using valves, variable aperture or slot areas, variable pump action or variable fluid pressure
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

623,049. Reducing surface friction on aircraft. SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTROM. Oct. 1, 1946, No. 29266. Convention date, Oct. 10, 1945. [Class 4] In an aircraft having an internal-combustion turbine or turbines 1 fed by a compressor 4, the boundary layer of air is removed through slots 11 and ducts 10 in the wing 2 and other surfaces and through an aperture 8 in the air intake 7 of the compressor, the area of the air intake 7 being adjustable manually or automatically to ensure that the static pressure thereat is less than that at any part of the aircraft surface. The aperture 8 is preferably near the narrowest section of the air intake. The area of the aperture 8, which may comprise an annular set of small apertures, may also be variable and non-return valves may be provided in the ducts 10. As shown, a non-rotary member 52 is mounted at the front of a rotary member 5<SP>1</SP> carrying the moving blades of the axial-flow compressor 4 and the fixed blades 3 are carried by the casing. The boundary layer air may be removed in part from the fuselage and ailerons, and some of the slots employed for this purpose may be adapted to be closed by flap valves.
GB29266/46A 1945-10-10 1946-10-01 Improvements in means for removing the boundary layer of flow appearing on the surfaces of aircraft Expired GB623049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE623049X 1945-10-10

Publications (1)

Publication Number Publication Date
GB623049A true GB623049A (en) 1949-05-11

Family

ID=20313311

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29266/46A Expired GB623049A (en) 1945-10-10 1946-10-01 Improvements in means for removing the boundary layer of flow appearing on the surfaces of aircraft

Country Status (1)

Country Link
GB (1) GB623049A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149804A (en) * 1963-03-13 1964-09-22 Jr Charles J Litz Anti-stall system
GB2285669A (en) * 1994-01-13 1995-07-19 Short Brothers Plc Boundary layer control in aerodynamic structures
WO2006012809A1 (en) * 2004-07-31 2006-02-09 Birgit Bergmann Aerodynamics optimised by combined air intake for an engine and a boundary suctioning layer
CN102649475A (en) * 2012-04-20 2012-08-29 徐长法 Three-hole-seam control airplane

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149804A (en) * 1963-03-13 1964-09-22 Jr Charles J Litz Anti-stall system
GB2285669A (en) * 1994-01-13 1995-07-19 Short Brothers Plc Boundary layer control in aerodynamic structures
US5743493A (en) * 1994-01-13 1998-04-28 Short Brothers Plc Boundary layer control in aerodynamic low drag structures
GB2285669B (en) * 1994-01-13 1998-06-10 Short Brothers Plc Boundary layer control in aerodynamic low drag structures
WO2006012809A1 (en) * 2004-07-31 2006-02-09 Birgit Bergmann Aerodynamics optimised by combined air intake for an engine and a boundary suctioning layer
CN102649475A (en) * 2012-04-20 2012-08-29 徐长法 Three-hole-seam control airplane

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