Patents
Sitemap › B64 - Aircraft; Aviation; Cosmonautics › B64C - Aeroplanes; Helicopters › B64C 21 - Influencing air-flow over aircraft surfaces by affecting boundary-layer flow
Patents for B64C 21 - Influencing air-flow over aircraft surfaces by affecting boundary-layer flow (1,724)
04/1993
04/15/1993WO1993008076A1 Method for controlling boundary layer on an aerodynamic surface of a flying vehicle, and a flying vehicle
04/15/1993CA2098278A1 Method for control of the boundary layer on the aerodynamic surface of an aircraft, and the aircraft provided with the boundary layer control system
04/14/1993EP0536874A1 Control of boundary layer flow
04/13/1993US5201829 Flight control device to provide directional control
03/1993
03/17/1993EP0532093A1 Perforated wing panel with variable porosity
12/1992
12/16/1992EP0518592A1 Vortex suppression for an eductor
12/15/1992US5171623 Drag reducing surface depressions
12/14/1992CA2068110A1 Vortex suppression for an eductor
12/09/1992EP0517459A1 Aircraft gas turbine engine bleed air energy recovery apparatus
12/05/1992CA2068177A1 Aircraft gas turbine engine bleed air energy recovery apparatus
12/01/1992WO1992021560A1 Boundary layer control
12/01/1992US5167387 Porous airfoil and process
12/01/1992CA2106850A1 Boundary layer control
12/01/1992CA1310943C Airfoil-shaped body
10/1992
10/27/1992US5158251 Aerodynamic surface tip vortex attenuation system
10/20/1992US5156353 Aircraft pylon
09/1992
09/02/1992EP0500875A1 Rotor
09/01/1992US5143329 Gas turbine engine powered aircraft environmental control system and boundary layer bleed
08/1992
08/25/1992US5141182 Gas turbine engine fan duct base pressure drag reduction
08/12/1992EP0498559A1 Method of providing a patterned surface on a substrate
08/11/1992US5137230 Aircraft gas turbine engine bleed air energy recovery apparatus
08/07/1992CA2060583A1 Method of providing a patterned surface on a substrate
07/1992
07/28/1992US5133519 Drag reduction method and surface
07/28/1992US5133516 Drag reduction article
06/1992
06/30/1992US5125597 Gas turbine engine powered aircraft environmental control system and boundary layer bleed with energy recovery system
06/17/1992EP0489871A1 System and method for suppressing noise produced by rotors
06/09/1992CA1302841C Diffuser
05/1992
05/19/1992US5114103 Aircraft engine electrically powered boundary layer bleed system
05/19/1992US5114102 Boundary layer control
05/19/1992US5114100 Anti-icing system for aircraft
05/19/1992US5114099 Surface for low drag in turbulent flow
04/1992
04/28/1992US5107626 Method of providing a patterned surface on a substrate
03/1992
03/15/1992WO1992005341A1 Rotor
03/15/1992CA2068539A1 Rotor
03/11/1992EP0464158A4 Lightweight airfoil
02/1992
02/28/1992CA2046765A1 Aircraft engine electrically powered boundary layer bleed system
01/1992
01/08/1992EP0464158A1 Lightweight airfoil.
12/1991
12/24/1991US5075564 Combined solar and wind powered generator with spiral surface pattern
12/10/1991CA1292931C Patterned, conformable sheet material for drag reduction
12/04/1991EP0459816A1 Gas turbine engine powered aircraft environmental control system and boundary layer bleed
12/04/1991EP0459815A1 Gas turbine engine fan duct base pressure drag reduction
12/03/1991US5069403 Applying patterned radiation curable polymer; curing
12/03/1991US5069397 Stabilized aero-optical free shear layer interface
12/02/1991CA2042201A1 Gas turbine engine powered aircraft environmental control system and boundary layer bleed
09/1991
09/24/1991US5050819 Rotatable non-circular forebody flow controller
07/1991
07/11/1991WO1991009776A1 Venturi-enhanced airfoil
07/10/1991EP0436243A2 Anti-icing system for aircraft
06/1991
06/25/1991US5026232 Boundary layer devices
05/1991
05/21/1991US5016837 Venturi enhanced airfoil
05/02/1991EP0425136A1 Mask and method for the production of at least one groove, rib or different intensity strip in or on a surface
04/1991
04/22/1991CA2028039A1 Mask and method for the production of at least one groove, rib or different intensity strip in or on a surface
03/1991
03/21/1991WO1991003623A1 System and method for suppressing noise produced by rotors
02/1991
02/19/1991US4994639 Methods of manufacture and surface treatment using laser radiation
02/19/1991US4993663 Engine of an aircraft
02/05/1991US4989810 Method and apparatus for influencing a laminar turbulent boundary layer transition on bodies in flow
01/1991
01/22/1991US4986496 Drag reduction article
01/10/1991WO1991000212A1 Lightweight airfoil
12/1990
12/19/1990EP0305374B1 Aerodynamic components having leading edge devices
12/11/1990US4976349 Aerofoil/hydrofoil
12/04/1990US4974633 System for controlling the flow of a fluid medium relative to an object
12/01/1990CA2012248A1 Hybrid laminar flow nacelle
09/1990
09/05/1990EP0319574A4 Venturi enhanced airfoil
08/1990
08/29/1990EP0383852A1 Improvements in or relating to reduction of drag
07/1990
07/18/1990EP0378340A2 Methods of manufacture and surface treatment using laser radiation
07/05/1990DE3913678C1 Boundary flow regulator for control bodies - uses evaluator circuit supplied by sensors measuring surface pressure and flow distribution
06/1990
06/12/1990US4932612 Method and apparatus for reducing turbulent skin friction
06/12/1990US4932610 Active control of boundary layer transition and turbulence
06/05/1990US4930729 Control of fluid flow
05/1990
05/10/1990DE3835213A1 Wing construction for energy transmission in the media of water and gas, and for a vehicle for movement on land or water and in the air
05/03/1990DE3836673A1 Method and arrangement for reducing the induced drag of a wing
04/1990
04/03/1990US4913381 Aerodynamic components having leading edge devices
03/1990
03/14/1990CN1007171B Airstream eductor
03/13/1990US4907765 Wall with a drag reducing surface and method for making such a wall
03/08/1990WO1990002079A1 Generation of an aerodynamic force by lateral blowing of air at the underwing of aircraft wings from the wing extremities towards the wing root at the aircraft fuselage
03/07/1990EP0356601A1 Improvements in jet-propelled aircraft
02/1990
02/07/1990EP0354022A2 Drag reduction article
01/1990
01/23/1990US4895323 Rag control for powered lift aircraft
01/11/1990WO1989011343A3 Improvements in or relating to reduction of drag
01/02/1990US4890803 Airfoil with fixed and variable upper camber portions
12/1989
12/20/1989EP0216384B1 Device to reduce friction drag
11/1989
11/30/1989WO1989011343A2 Improvements in or relating to reduction of drag
10/1989
10/10/1989US4872484 System for controlling the flow of a fluid medium relative to an object
09/1989
09/12/1989US4865271 Boundary layer devices
09/05/1989US4863121 Boundary layer devices
08/1989
08/31/1989DE3804931A1 Method for directional control of a missile flying in the relatively high supersonic domain, and such a missile
08/29/1989US4860976 Attached jet spanwise blowing lift augmentation system
07/1989
07/18/1989US4848701 Vertical take-off and landing aircraft
07/04/1989US4844385 Pneumatic aerodynamic control surface
06/1989
06/14/1989EP0319574A1 Venturi enhanced airfoil
06/06/1989US4836473 Apparatus for influencing a boundary layer on the surface of a body moving through a medium
05/1989
05/23/1989CA1254547A1 Surface exhibiting reduced flow resistance of a body over which turbulent flow takes place
05/17/1989EP0315806A2 Method and device to cause the laminar-turbulent boundary layer transition on a body
05/16/1989US4830315 Airfoil-shaped body
05/10/1989EP0315563A1 Convoluted plate to reduce base drag
03/1989
03/21/1989US4813635 Projectile with reduced base drag
03/21/1989US4813633 Airfoil trailing edge
03/21/1989US4813631 Laminar flow control airfoil
03/08/1989EP0305374A1 Aerodynamic components having leading edge devices.
02/1989
02/28/1989US4807831 Combination boundary layer control system for high altitude aircraft
12/1988
12/29/1988WO1988010210A1 Venturi enhanced airfoil
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