Class 244/205 - With ionic or electrostatic surface

Subclass of Class 244 - Aeronautics and astronautics
Definition: Boundary layer control means comprising means to create
No. of patents: 36
Last issue date: 01/10/2012

Number	Title	Issue Date
8091836	Rotary wing system with ion field flow control A rotary-wing system which generates a directed ion field to propel a fluid along a rotary-wing to control at least one boundary layer characteristic. ...	01/10/2012
8016247	Plasma flow control actuator system and method A plasma actuator system and method especially well adapted for use on airborne mobile platforms, such as aircraft, for directional and/or attitude control. The system includes at least one plasma actuator having first and second electrodes mounted on a surface of a...	09/13/2011
8016246	Plasma actuator system and method for use with a weapons bay on a high speed mobile platform A system and method for controlling a freestream air flow over a surface of an airborne mobile platform, for example an aircraft. In one implementation the system includes a plurality of plasma actuators used on an undersurface of a fuselage of an aircraft upstream ...	09/13/2011
8006939	Over-wing traveling-wave axial flow plasma accelerator A method to manipulate a fluid flow over a surface is provided. This method may be used to reduce drag, improve the lift to drag (L/D) ratio, attach fluid flow, or reduce flow noise at the surface. This involves flowing a fluid over the surface wherein the fluid con...	08/30/2011
7988101	Airfoil trailing edge plasma flow control apparatus and method A flow control system and method especially well adapted for use on a Coanda surface. In one embodiment a plurality of plasma actuators are disposed over a Coanda surface of a wing of an aircraft. The actuators are selectively energized to either delay the onset of ...	08/02/2011
7954768	Method of controlling aircraft, missiles, munitions and ground vehicles with plasma actuators A method of controlling an aircraft, missile, munition or ground vehicle with plasma actuators, and more particularly of controlling fluid flow across their surfaces or other surfaces which would benefit from such a method, includes the design of an aerodynamic plas...	06/07/2011
7744039	Systems and methods for controlling flows with electrical pulses Systems and methods for controlling flow with electrical pulses are disclosed. An aircraft system in accordance with one embodiment includes an aerodynamic body having a flow surface exposed to an adjacent air stream, and a flow control assembly that includes a firs...	06/29/2010
7641153	Directed energy off-body heating for supersonic vehicle shockwave and sonic boom control Methods and apparatus for suppressing noise. The present invention provides a method that includes directing a laser at a first volume of gas and directing microwave radiation to a second volume. The method includes selecting the location of the second volume so tha...	01/05/2010
7413149	Wing enhancement through ion entrainment of media A system for augmenting the apparent velocity and effectiveness of an airfoil, such as a wing, on a vehicle includes at least one ionizer or emitter positioned relative to the airfoil to ionize a fluid media in which the airfoil travels and at least one attractor/re...	08/19/2008
7380756	Single dielectric barrier aerodynamic plasma actuation A single dielectric barrier aerodynamic plasma actuator apparatus based on the dielectric barrier discharge phenomenon is disclosed and suggested for application to aerodynamic uses for drag reduction, stall elimination and airfoil efficiency improvement. In the pla...	06/03/2008
7347294	Power system for electrically powered land vehicle The power system for an electrically powered land vehicle extracts electrons from ambient air to generate adequate electrical power to operate the land vehicle electrical energy production and propulsion system. The extracted electrons generate enough electrical pow...	03/25/2008
7334394	Localized arc filament plasma actuators for noise mitigation and mixing enhancement A device for controlling fluid flow. The device includes an arc generator coupled to electrodes. The electrodes are placed adjacent a fluid flowpath such that upon being energized by the arc generator, an arc filament plasma adjacent the electrodes is formed. In tur...	02/26/2008
7255062	Pseudo surface microwave produced plasma shielding system A pseudo surface microwave produced plasma shielding system is a simple device that creates a prescribed plasma environment with a prescribed plasma density gradient, and protects an object surrounded by this environment as a shield. Pseudo surface microwaves intera...	08/14/2007
7234667	Modular aerospace plane This invention relates to the design of a Modular Aerospace Plane (MAP) comprising a forward fuselage section, a main wing section, a tail section and wing attachments. Various sections can be integrated to offer a variety of aircraft characteristics, performance an...	06/26/2007
7156032	Method and apparatus for controlling friction between a fluid and a body A method and apparatus is disclosed wherein nanostructures or microstructures are disposed on a surface of a body (such as a submersible vehicle) that is adapted to move through a fluid, such as water. The nanostructures or microstructures are disposed on the surfac...	01/02/2007
7121511	Shock wave modification method and system A shock wave in a gas is modified by emitting energy to form an extended path in the gas; heating gas along the path to form a volume of heated gas expanding outwardly from the path; and directing a path. The volume of heated gas passes through the shock wave and mo...	10/17/2006
7070144	Aircraft and missile afterbody flow control device and method of controlling flow The present invention relates to an afterbody flow control system and more particularly to aircraft or missile flow control system for enhanced maneuverability and stabilization. The present invention further relates to a method of operating the flow control system....	07/04/2006
7066431	Turbulent flow drag reduction The present invention relates to apparatus for influencing fluid flow over a surface, and more particularly, but not exclusively, to turbulent boundary layer flow drag reduction for an aircraft. The present invention provides such apparatus including a plasma genera...	06/27/2006
7017863	Turbulent flow drag reduction The present invention relates to apparatus for influencing fluid flow over a surface, and more particularly, but not exclusively, to turbulent boundary layer flow drag reduction for an aircraft. The present invention provides such apparatus including a plasma genera...	03/28/2006
6963810	Method and system for locating critical flow feature indicators in three dimensional flow regimes A method for locating two dimensional critical flow features on a surface of a three dimensional body immersed in a fluid stream is presented. The method includes applying a hot film sensor array on the surface of the body. The hot film sensor array includes a plura...	11/08/2005
6805325	Surface plasma discharge for controlling leading edge contamination and crossflow instabilities for laminar flow The present invention provides a system and method for controlling leading edge contamination and crossflow instabilities for laminar flow on aircraft airfoils that is lightweight, low power, economical and reliable. Plasma surface discharges supply volumetric heati...	10/19/2004
6247671	Ion doping apparatus and method for aerodynamic flow control Method and apparatus for impingement on the sonic wave produced by a supersonic gas flow and the gas flow in a boundary layer of a gas that interfaces with a solid substrate comprising providing a source of a mixture of ions and electrons, introducing sai...	06/19/2001
6220549	Method and apparatus for fabricating panels used for the active control of surface drag Improved methods and techniques for fabricating a panel of control cells, or a "control panel", useful in various electromagnetic turbulence control (EMTC) applications includes a layered structure which includes three main components or layers: a metal s...	04/24/2001
6079345	System and method for controlling the flow of a conductive fluid over a surface Magnetic and electric fields are used in a controlled manner to create Lorentz forces that affect the flow of a conductive fluid near the boundary layer of a control tile, or a matrix of control tiles, immersed in a conductive fluid. The control tiles are...	06/27/2000
5964433	Staggered actuation of electromagnetic tiles for boundary layer control The boundary layer of a fluid travelling in a mean-flow direction relative to a surface of a wall of a body is controlled by generating in the fluid a magnetic field B having flux lines along the surface of the wall and an electric current density J trave...	10/12/1999
5941481	Device for interactive turbulence control in boundary layers An electro-magnetohydrodynamic (EMHD) transducer that detects and manipuls the velocity of a near-wall fluid below a turbulent boundary layer includes a magnetic field generator to provide a magnetic field near a surface exposed to the fluid. A pair of s...	08/24/1999
5934622	Micro-electrode and magnet array for microturbulence control A boundary layer control device for a surface which reduces turbulence by oviding forces which counteract microturbulent events occurring at the surface. The microturbulent events occur periodically with a known topography and include liftup and ejection,...	08/10/1999
5934611	Low drag inlet design using injected duct flow An air intake system disposable in an air vehicle turbo engine housing disposed in an exterior airflow for selectively reducing external engine boundary layer separation drag and external engine friction drag on the engine housing comprising an air inlet ...	08/10/1999
5890681	Method for controlling microturbulence A method for controlling microturbulence in a medium flowing near a surface s disclosed. The method includes the steps of measuring the forces acting near or on the surface and using those measurements to determine the state probabilities for the microturb...	04/06/1999
5797563	System for increasing the aerodynamic and hydrodynamic efficiency of a vehicle in motion The system includes radiation generation and transmission components which radiate tuned microwave electromagnetic energy outwardly from a vehicle through an antenna into a fluid medium through which the vehicle is moving. The microwave radiation is at th...	08/25/1998
5791275	Surface layer comprising micro-fabricated tiles for electromagnetic control of fluid turbulence in sea water A surface layer for use in connection with an object adapted for motion tugh a fluid includes an array of tiles each having a pair of electrodes and a pair of magnetic poles positioned to generate respective electric and magnetic fields generally transve...	08/11/1998
5669583	Method and apparatus for covering bodies with a uniform glow discharge plasma and applications thereof Method and apparatus for covering a free-standing body with a uniform glow discharge plasma, particularly at atmospheric pressure. The method may be used to provide a body coated with such a plasma, and also to treat a workpiece....	09/23/1997
5437421	Multiple electromagnetic tiles for boundary layer control The boundary layer of a fluid travelling in a mean-flow direction relative to a surface of a wall of a body is controlled by generating in the fluid a magnetic field B having flux lines along the surface of the wall and an electric current density J trave...	08/01/1995
5320309	Electromagnetic device and method for boundary layer control The boundary layer of a fluid travelling in a mean-flow direction relative to a surface of a wall of a body is controlled by generating in a near-wall region of the flow a magnetic field B having flux lines parallel to the surface of the wall and an elect...	06/14/1994
5263661	Sonic boom attenuator The Sonic Boom Attenuator is a device designed for use with supersonic aircraft wherein a laser beam is shone down the leading edge of a short, rigid, straight, thin wing, heating thus rarefying the air before it passes over and under the wing. In this ma...	11/23/1993
3984730	Method and apparatus for neutralizing potentials induced on spacecraft surfaces A potential induced on the surface of an orbiting spacecraft is neutralized to the potential of a plasma through which the spacecraft is traveling by directing charged particles into the plasma from the spacecraft surface. The induced potential occurs in ...	10/05/1976

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Class 244/205 - With ionic or electrostatic surface