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Class Information
Number: 244/199.3
Name: Aeronautics > Aircraft sustentation > Sustaining airfoils > With lift modification > By vortex control outside of boundary layer > Of tip vortex > Active
Description: Subject matter in which the airflow modification device is a jet, propeller, or other moving member located on the airfoil.










Patents under this class:

Patent Number Title Of Patent Date Issued
8651426 Jet engine installation Feb. 18, 2014
8387922 Aerodynamic element and wing with aerodynamic element, actuator-activation module, computer, computer program and method of influencing wake eddies Mar. 5, 2013
8376284 Systems and methods for tracing aircraft vortices Feb. 19, 2013
8376285 Active systems and methods for controlling an airfoil vortex Feb. 19, 2013
8256720 Smart vortex generator, and aircraft, vessel, and rotary machine being equipped with the same Sep. 4, 2012
8226047 Reduction of tip vortex and wake interaction effects in energy and propulsion systems Jul. 24, 2012
8226025 Wing tip docking system for aircraft Jul. 24, 2012
8172172 Wing tip docking system for aircraft May. 8, 2012
8172185 Establishment of laminar boundary layer flow on an aerofoil body May. 8, 2012
8083185 Aircraft wing tip having a variable incidence angle Dec. 27, 2011
8061661 System and method for reducing airfoil vortices Nov. 22, 2011
8061646 Wing tip docking system for aircraft Nov. 22, 2011
8016244 Active systems and methods for controlling an airfoil vortex Sep. 13, 2011
7874522 Systems and methods for tracing aircraft vortices Jan. 25, 2011
7757991 Helicopter blade vortex interaction noise reducing method and device Jul. 20, 2010
7744038 Controllable winglets Jun. 29, 2010
7728265 MEMS type flow actuated out-of-plane flap Jun. 1, 2010
7597289 Apparatus and method for the control of trailing wake flows Oct. 6, 2009
7316371 Method and device for steepening a landing approach of an aircraft Jan. 8, 2008
7017862 Wake vortex visualizer for an aircraft Mar. 28, 2006
6394397 Lifting surface with active variable tip member and method for influencing lifting surface behavior therewith May. 28, 2002
6082679 Active system for early destruction of trailing vortices Jul. 4, 2000
5934612 Wingtip vortex device for induced drag reduction and vortex cancellation Aug. 10, 1999
5918835 Wingtip vortex impeller device for reducing drag and vortex cancellation Jul. 6, 1999
5806807 Airfoil vortex attenuation apparatus and method Sep. 15, 1998
5791875 Tip vortex reduction system Aug. 11, 1998
5702071 Deployable vortex turbine for dissipating or extracting energy from a lift induced vortex emanating from an aircraft Dec. 30, 1997
5562414 Noise reduction device for rotorcraft Oct. 8, 1996
5492289 Lifting body with reduced-strength trailing vortices Feb. 20, 1996
5297764 Air foil providing vortex attenuation Mar. 29, 1994
5158251 Aerodynamic surface tip vortex attenuation system Oct. 27, 1992
5150859 Wingtip turbine Sep. 29, 1992
5100085 Aircraft wingtip vorticity redistribution apparatus Mar. 31, 1992
4917332 Wingtip vortex turbine Apr. 17, 1990
4533101 Wingtip vortex propeller Aug. 6, 1985
4478380 Wing tip vortices suppressor Oct. 23, 1984
4045144 Wind energy concentrators Aug. 30, 1977
4040578 Rotor vortex control Aug. 9, 1977
3997132 Method and apparatus for controlling tip vortices Dec. 14, 1976
3974986 Aircraft wing vortex deflector Aug. 17, 1976
3936013 Vortex control Feb. 3, 1976











 
 
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