CA2136000A1 - Wing with a wing grid as the end section - Google Patents

Wing with a wing grid as the end section

Info

Publication number
CA2136000A1
CA2136000A1 CA002136000A CA2136000A CA2136000A1 CA 2136000 A1 CA2136000 A1 CA 2136000A1 CA 002136000 A CA002136000 A CA 002136000A CA 2136000 A CA2136000 A CA 2136000A CA 2136000 A1 CA2136000 A1 CA 2136000A1
Authority
CA
Canada
Prior art keywords
wing
grid
winglets
end section
span
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.)
Granted
Application number
CA002136000A
Other languages
French (fr)
Other versions
CA2136000C (en
Inventor
Ulrich La Roche
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.)
Individual
Original Assignee
Individual
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
Priority claimed from CH1032/93A external-priority patent/CH684588A5/en
Application filed by Individual filed Critical Individual
Publication of CA2136000A1 publication Critical patent/CA2136000A1/en
Application granted granted Critical
Publication of CA2136000C publication Critical patent/CA2136000C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C23/00—Influencing air flow over aircraft surfaces, not otherwise provided for
    • B64C23/06—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices
    • B64C23/065—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices at the wing tips
    • B64C23/069—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices at the wing tips using one or more wing tip airfoil devices, e.g. winglets, splines, wing tip fences or raked wingtips
    • B64C23/076—Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices at the wing tips using one or more wing tip airfoil devices, e.g. winglets, splines, wing tip fences or raked wingtips the wing tip airfoil devices comprising one or more separate moveable members thereon affecting the vortices, e.g. flaps
    • 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)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Wind Motors (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Prostheses (AREA)
  • Toys (AREA)

Abstract

The wing with the span (b) according to the invention has a main part (1), which has a substantially closed surface with respect to the flow (v) and is provided at its free end with an end section in the form of a wing grid. The wing grid has at least two parallel-staggered winglets (2). Such a wing grid as part of the wing span (b) takes over the intended profile cir-culation at the attachment point to the main part and subdiv-ides said circulation approximately uniformly over the winglets.
Thus, the same lift is produced in the end section with at least two winglets. Thus, for the wing the circulation distri-bution is more complete and the induced resistance is decreased.
An upper or lower limit for the action is obtained, as a function of whether as a result of the fixed wing grid for the entire wing a rectangular circulation distribution is produced or only for the part of the overall span replaced by the wing grid. Thus, for the wing with wing grid there is a correspon-ding reduction of the induced resistance as compared with a conventional wing without a wing grid for the same resulting aspect ratio.
CA002136000A 1993-04-05 1994-03-30 Wing with a wing grid as the end section Expired - Fee Related CA2136000C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH1032/93-2 1993-04-05
CH1032/93A CH684588A5 (en) 1993-04-05 1993-04-05 Wing with a wing grating as an end section in order to reduce the glide angle
CH3293/93-7 1993-11-02
CH329393 1993-11-02
PCT/CH1994/000067 WO1994022713A1 (en) 1993-04-05 1994-03-30 Wing with a wing grid as the end section

Publications (2)

Publication Number Publication Date
CA2136000A1 true CA2136000A1 (en) 1994-10-13
CA2136000C CA2136000C (en) 2001-10-30

Family

ID=25686435

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002136000A Expired - Fee Related CA2136000C (en) 1993-04-05 1994-03-30 Wing with a wing grid as the end section

Country Status (5)

Country Link
EP (1) EP0642440B1 (en)
AT (1) ATE149933T1 (en)
CA (1) CA2136000C (en)
DE (1) DE59402023D1 (en)
WO (1) WO1994022713A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8783623B2 (en) 2008-06-10 2014-07-22 Airbus Operations Gmbh Device for the generation of aerodynamic vortices and also a regulating flap and wing with a device for the generation of aerodynamic vortices

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1205384B1 (en) 2000-11-10 2005-04-20 LA ROCHE, Ulrich Wing grid type wing tip
DE102009011480A1 (en) 2009-03-06 2010-09-09 Thomas Dr. Gartner Flexible high performance sail

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1466551A (en) * 1921-12-06 1923-08-28 Bristol Aeroplane Co Ltd Aircraft, submarine, torpedo, and other totally immersed craft or structure
GB196410A (en) * 1922-02-01 1923-04-26 William Robert Douglas Shaw Improvements in wings for aerial machines
GB846322A (en) * 1956-08-24 1960-08-31 Commw Of Australia Crown Solic Lift augmenting means
FR2349494A1 (en) * 1976-04-27 1977-11-25 Ducout Marcel Boat with sails formed of vertical panels - has vertical panels held to mast by horizontal ties and rotatable about longitudinal axes to give curved appearance to sail
US4671473A (en) * 1984-11-08 1987-06-09 Goodson Kenneth W Airfoil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8783623B2 (en) 2008-06-10 2014-07-22 Airbus Operations Gmbh Device for the generation of aerodynamic vortices and also a regulating flap and wing with a device for the generation of aerodynamic vortices

Also Published As

Publication number Publication date
DE59402023D1 (en) 1997-04-17
ATE149933T1 (en) 1997-03-15
EP0642440B1 (en) 1997-03-12
CA2136000C (en) 2001-10-30
WO1994022713A1 (en) 1994-10-13
EP0642440A1 (en) 1995-03-15

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed