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Class Information
Number: 244/199.1
Name: Aeronautics > Aircraft sustentation > Sustaining airfoils > With lift modification > By vortex control outside of boundary layer
Description: Subject matter in which the airfoil comprises or includes airflow modification means designed to create or disperse a swirling air flow, this flow either circulating about the surface of the airfoil outside of the boundary layer or flowing toward or away from the surface of the airfoil to effect changes in the lift of the airfoil.










Sub-classes under this class:

Class Number Class Name Patents
244/199.2 Of tip vortex 28


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8656957 Vortex generators to control boundary layer interactions Feb. 25, 2014
8657238 Retractable vortex generator for reducing stall speed Feb. 25, 2014
8657236 Aircraft provided with aerodynamic seal for reduction of noise generated by aircraft control surfaces Feb. 25, 2014
8651426 Jet engine installation Feb. 18, 2014
RE44548 Open roof construction for a vehicle Oct. 22, 2013
8528601 Passive boundary layer control elements Sep. 10, 2013
8453974 Flow channels Jun. 4, 2013
8444092 Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing same May. 21, 2013
8382040 Hamilton H.N2 laminar flow diskette wing Feb. 26, 2013
8328516 Systems and methods of assembling a rotor blade extension for use in a wind turbine Dec. 11, 2012
8186619 Airplane engine pylon comprising at least one protruding element to generate a vortex of the airflow May. 29, 2012
8181912 Engine pod for an aircraft with a vortex generator arrangement May. 22, 2012
8172185 Establishment of laminar boundary layer flow on an aerofoil body May. 8, 2012
8118265 Devices and methods to improve wing aerodynamics at low airspeeds Feb. 21, 2012
8118263 Method of controlling an aircraft in flight, especially to reduce wake vortices Feb. 21, 2012
8087617 Retractable nacelle chine Jan. 3, 2012
8047233 Apparatus and method for generating vortexes in fluid flow adjacent to a surface Nov. 1, 2011
7997528 Reducing runway requirement for aircraft Aug. 16, 2011
7988099 Winglet Aug. 2, 2011
7988092 Vortex generator at hot gas output Aug. 2, 2011
7934686 Reducing drag on a mobile body May. 3, 2011
7874523 Method of controlling an aircraft in flight, especially to reduce wake vortices Jan. 25, 2011
7866608 Device for controlling a vortex trail generated by the oblong element of an aircraft bearing surface Jan. 11, 2011
7815150 Beam director flow control Oct. 19, 2010
7766279 Vortex ring generator Aug. 3, 2010
7744038 Controllable winglets Jun. 29, 2010
7673834 Vortex ring generator Mar. 9, 2010
7520470 Aircraft configuration with improved aerodynamic performance Apr. 21, 2009
7484589 Apparatus and method for reducing aircraft noise and acoustic fatigue Feb. 3, 2009
7431244 Device for the generation of eddies and method for operating of said device Oct. 7, 2008
7241113 Vorticity control in a gas turbine engine Jul. 10, 2007
7150434 Vehicle wake vortex modifier Dec. 19, 2006
7114685 Wing for an aircraft or spacecraft Oct. 3, 2006
6964397 Nacelle chine installation for drag reduction Nov. 15, 2005
6908063 Vortex shedding and drag force reduction Jun. 21, 2005
6719246 Process and device for accelerating the destruction of at least two vortices in the wake of a moving body, particularly an aircraft Apr. 13, 2004
6607168 Bearing structure with reduced tip vortex Aug. 19, 2003
6601348 Structures for mitigating wind suction atop a flat or slightly inclined roof Aug. 5, 2003
6578798 Airlifting surface division Jun. 17, 2003
6520449 Lifting platform with positive horizontal stability Feb. 18, 2003
6513761 Method and apparatus for reducing trailing vortices in the wake of an aircraft Feb. 4, 2003
6491260 Noise reducing vortex generators on aircraft wing control surfaces Dec. 10, 2002
6409126 Passive flow control of bluff body wake turbulence Jun. 25, 2002
6394396 Aerodynamic noise reducing structure for aircraft wing slats May. 28, 2002
6318677 Method and apparatus for generating a stable leading-edge lifting-vortex controller Nov. 20, 2001
6276636 Gas or fluid de-organizers for moving objects Aug. 21, 2001
6186445 Method and apparatus for mitigating junction flows Feb. 13, 2001
6161802 Trapped vortex airfoil nose Dec. 19, 2000
6152404 Apparatus for influencing a wing root airflow in an aircraft Nov. 28, 2000
6131853 Micro-drag generators for aerodynamic and hydrodynamic braking and control Oct. 17, 2000

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