Title:
FLUID FLOW CONTROL DEVICE FOR A WING TIP
Document Type and Number:
WIPO Patent Application WO/2011/135343
Kind Code:
A3
Abstract:
A fluid flow control device (10) for an aerofoil (11) comprises an aerofoil -tip body (17) of aerofoil shape, coupling apparatus (36) adapted to couple one end of the body (17) to an aerofoil (11), and a passive tip blowing assembly (16). The passive tip blowing assembly (16) is provided at the other end of the aerofoil -tip and comprises a housing (18) defining a fluid chamber (23) and a vane (22) of aerofoil shape. The fluid chamber extends along part of the chord- length of the body and has a fluid inlet (27) and a fluid outlet (28). The vane is arranged along the chord of the aerofoil- tip, with its leading edge (22a) at the inlet and its trailing edge (22b) at the outlet. The aerofoil section of the aerofoil -tip (17) has a higher camber than that of the aerofoil (1), which turns fluid flow across the low pressure side (32) of the aerofoil towards the aerofoil -tip (17), so that the fluid flow mirrors the fluid flow across the high pressure side (33) of the aerofoil.
Inventors:
SMITH JOHN JAYCOTT (GB)
Application Number:
PCT/GB2011/050805
Publication Date:
December 22, 2011
Filing Date:
April 21, 2011
Export Citation:
Assignee:
AERODYNAMIC RES INNOVATIONS HOLDINGS LTD (GB)
SMITH JOHN JAYCOTT (GB)
SMITH JOHN JAYCOTT (GB)
International Classes:
B64C23/06
Domestic Patent References:
| WO2009149932A2 | 2009-12-17 | |||
| WO2009098442A2 | 2009-08-13 |
Foreign References:
| FR2780700A1 | 2000-01-07 | |||
| US6474604B1 | 2002-11-05 | |||
| US4382569A | 1983-05-10 | |||
| FR2783885A1 | 2000-03-31 | |||
| CH693949A5 | 2004-05-14 |
Other References:
PROCTOR P: "WINGLET DDESIGNS TO CUT FUEL BURN", AVIATION WEEK AND SPACE TECHNOLOGY, MCGRAW-HILL COMPAGNY, NEW YORK, NY, US, vol. 139, no. 23, 6 December 1993 (1993-12-06), pages 49, XP000413695, ISSN: 0005-2175
Attorney, Agent or Firm:
MOLONY, Anna (Thorpe House17 Dormer Place,Leamington Spa, Warwickshire CV32 5AA, GB)
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