Matches 1 - 50 out of 66 1 2 >


Match Document Document Title
8172178 Device for generating aerodynamic disturbances so as to protect the outer surface of an aircraft against elevated temperatures  
An aircraft with an outer surface from which flows an aerodynamic stream of cold air and includes at least one hot gas outlet, characterized in that it includes at least one device (16) for...
8152109 Method and system for controlling fluid flow in relation to a foil and harnessing energy therefrom  
A method and system 10 for controlling fluid flow 12 in relation to a body or foil 14. The system 10 has one or more channels 16, at least some of which having an inlet port 18 and an outlet port...
8128035 Winglets with recessed surfaces, and associated systems and methods  
Winglets with recessed surfaces, and associated systems and methods are disclosed. A system in accordance with a particular embodiment includes a wing having an inboard portion and an outboard...
8113469 Passive micro-roughness array for drag modification  
The present invention is directed to a micro-array surface that provides for either drag reduction or enhancement. In one aspect, an aerodynamic or hydrodynamic wall surface that is configured to...
8047233 Apparatus and method for generating vortexes in fluid flow adjacent to a surface  
An apparatus for generating vortexes in fluid flow generally adjacent to a surface includes: (a) at least one vortex generating element; and (b) a piezoelectric motor element coupled with the at...
8038102 System and method to control flowfield vortices with micro-jet arrays  
The present invention provides a system and method for actively manipulating and controlling aerodynamic or hydrodynamic flow field vortices within a fluid flow over a surface using micro-jet...
8033510 Lift augmentation system and associated method  
A system and method for generating lift provided by a multi-element aircraft wing are provided. The system includes a main wing element, a slat interconnected to the main wing element, and a flap...
8016245 Dynamic bumps for drag reduction at transonic-supersonic speeds  
A system for reducing overall drag of a mobile platform includes a surface on which an airflow forms a boundary layer and a generally normal shockwave. The airflow is at a first velocity that is...
7954767 Laminar flow surfaces with selected roughness distributions, and associated methods  
Laminar flow surfaces with selected roughness distributions, and associated methods are disclosed. A representative method for designing an airfoil includes selecting a parameter that includes a...
7878457 Retractable vortex generator  
A flow control device is disclosed including a flow control surface over which fluid is designed to flow in a predetermined direction. Vortex generators are associated with the flow control...
7850126 Laminar flow surfaces with selected roughness distributions, and associated methods  
Laminar flow surfaces with selected roughness distributions, and associated methods are disclosed. A representative method for designing an airfoil includes selecting a parameter that includes a...
7832689 Element for generating a fluid dynamic force  
This invention relates to an element (11) for generating a fluid dynamic force, the element (11) comprising first (13) and second (15) surfaces extending in opposite directions from a leading edge...
7815150 Beam director flow control  
Systems and methods are described for controlling flow disturbances emanating from a protrusion, such as a beam propagating device. In one embodiment, a method includes positioning a flow control...
7686256 Conformal aero-adaptive nozzle/aftbody  
The present invention provides flow field control techniques that adapt the aft body region flow field to eliminate or mitigate the development of massive separated flow field zones and associated...
7673834 Vortex ring generator  
A vortex ring generator adapted to be associated with a body subjected to fluid flow, the vortex ring generator being adapted to produce a fluid flow in the form of a vortex ring with the fluid...
7624941 Method of controlling aircraft, missiles, munitions and ground vehicles with plasma actuators  
The present invention relates to a method of controlling an aircraft, missile, munition or ground vehicle with plasma actuators, and more particularly to controlling fluid flow across their...
7537182 Simultaneous multiple-location separation control  
A method of controlling a shear layer for a fluid dynamic body introduces first periodic disturbances into the fluid medium at a first flow separation location. Simultaneously, second periodic...
7275721 Arrangement for generating vortexes  
A spoiler and wing of an aircraft. A bottom surface of the spoiler has several longitudinal, elongated grooves. At least some of the grooves are equipped with one or more vortex generators....
6612524 Forebody vortex alleviation device  
A forebody 10 for an aeronautical vehicle 12 is provided. The forebody 10 includes an exterior wall 14 having a first half 16 and a second half 18. The first half 16 has a first porous section 20...
6345791 Streamwise variable height riblets for reducing skin friction drag of surfaces  
A series of parallel riblets extend from a smooth, aerodynamic surface for reducing the skin friction drag of the surface an airstream flows around it. The riblets extend longitudinally along the...
6105904 Deployable flow control device  
A deployable flow control device for a flow surface over which fluid having a fluid boundary layer flows which fluid boundary layer exhibits certain dynamics is disclosed. The deployable flow...
5988568 Surface modification apparatus and method for decreasing the drag or retarding forces created by fluids flowing across a moving surface  
A body moving through a fluid has air control and directing elements on its outer surface. The elements are laterally and longitudinally spaced and includes elements having a forward curved nose or...
5772155 Aircraft wing flaps  
A wing assembly has a wing and at least one slender delta shaped flap with sharp leading edges pointing into the flow direction and deployable above the upper wing surface close to the quarter line...
5598990 Supersonic vortex generator  
A vortex generator for attenuating flow separation which occur during supersonic flow of air over structure such as an aircraft airfoil, its fuselage, surfaces forming a part of a jet propulsion...
5540406 Hydrofoils and airfoils  
A low turbulence cambered surface foil, hydrofoil or airfoil, which contains indentations located on maximum camber across which a fluid can be flowed. The indentations create turbulence in the...
5533865 Wind turbine  
In order to reduce the noise nuisance caused during operation by rotor blades of a rotor of a wind turbine the rear edge of each blade is irregularly formed. In particular the saw-tooth form with a...
5303882 Corner vortex suppressor  
A corner vortex forms at the corners of a square or rectangular wind tunnel or water tunnel and disrupts the flow and creates excessive drag, turbulence, noise and wake. The corners defined by a...
5253828 Concealable flap-actuated vortex generator  
A concealable flap actuated vortex generator for generating a vortex on a lifting surface assembly, and an improved aircraft flight lifting surface having such concealable flap actuated vortex...
5209438 Method and apparatus for delaying the separation of flow from a solid surface  
An active perturbation-producing element on the solid surface is driven to induce oscillations in the boundary layer of the fluid stream about an axis substantially perpendicular to the solid...
5205519 Boundary layer relaminarization device  
Relamination of a boundary layer formed in supersonic flow over the leading edge of a swept airfoil is accomplished using at least one band, especially a quadrangular band, and most preferably a...
5156362 Jet engine fan nacelle  
A jet engine fan nacelle which maintains attached flow during engine windmilling. The nacelle includes a cylindrical airfoil body having an inner surface. A plurality of vortex generators are...
5074234 Vortex generators for sails  
A vortex generator for attachment to the surface of a sail of a sailboat made from a strip of foldable material such as sail cloth or film that has a central member formed of two panels of the...
5069402 Alleviation of aircraft fuselage form drag  
An aircraft having an upswept tail section fuselage includes a single pair of large vortex generators mounted in the vicinity of the break in the fuselage ahead of or at the beginning of the tail...
5058837 Low drag vortex generators  
A generally V-shaped device (40) that is installed on a surface (48) over which there is a flowing medium (50) whose viscosity causes a boundary layer to form between free-stream medium and the...
5054720 Trapped vortex cavity  
An airfoil having a trailing edge member pivotally connected to a leading edge member. The trailing edge member having a vortex generating cavity that can be exposed or concealed from a stream of...
5054412 Hydrodynamic skin-friction reduction  
A process for reducing skin friction, inhibiting the effects of liquid turbulence, and decreasing heat transfer in a system involving flow of a liquid along a surface of a body includes applying a...
5037044 Aerodynamic or hydrodynamic surfaces  
An aerodynamic or hydrodynamic surface having a swept-back leading edge includes at least one flow separation device located on an attachment line of the leading edge, such as a step-up, step-down,...
4913381 Aerodynamic components having leading edge devices  
In modern thin wing aircraft flow separation at high incidence may originate at the leading edge. This invention combats the problem by restricting the growth of the region of separated flow by...
4836473 Apparatus for influencing a boundary layer on the surface of a body moving through a medium  
The pressure drag on the skin of an aircraft is reduced by rigidly securing boundary layer influencing members to the skin of the aircraft, including the wings, the elevantor and fin/rudder...
4830315 Airfoil-shaped body  
An airfoil-shaped body has a relatively thin trailing edge with a series of alternating, adjoining, downstream extending troughs and ridges in its suction surface which form wave-like surface...
4813635 Projectile with reduced base drag  
A projectile having a downstream extending surface of revolution which terminates as a blunt base has a plurality of circumferentially spaced apart U-shaped, downstream extending troughs in its...
4776535 Convoluted plate to reduce base drag  
A body adapted to move downstream through a fluid has a downstream extending smooth surface terminating at a blunt base. Extending transversely across the smooth surface and disposed upstream of...
4718620 Terraced channels for reducing afterbody drag  
A fluid flow control for reducing the drag associated with an upswept afterbody includes a pair of ridges forming substantially symmetric flow channels arranged in an approximately helical fashion...
4706910 Combined riblet and lebu drag reduction system  
The invention is a system of flow control devices which result in reduced skin friction on aerodynamic and hydrodynamic surfaces. The devices cause a breakup of large-scale disturbances in the...
4699340 Laminar vortex pump system  
Streamwise ridges on a lifting wing intercept local flow consisting of free stream and spanwise crossflow to create a pattern of vortices over the wing and aligned with the ridge axes; the vortices...
4696442 Vortex generators for inlets  
A pair of vortex generators are attached to the exterior surface of an aircraft and located forwardly of a flush inlet so as to effectively remove or reduce the thickness of a slower-moving...
4671474 Fluid control apparatus and method utilizing cellular array containing mini-vortex flow patterns  
An apparatus for controlling flow over a surface, especially transonic flow, including means for embedding within the surface small vortices with their axes parallel to said surface and transverse...
4664345 Method for stabilizing laminar separated boundary layers  
Separated laminar flow boundary layers are stabilized by delaying a transition into a turbulent flow and by reducing the size of the laminar boundary layer separation zone downstream of a...
4655419 Vortex generator  
A vortex generator mounted to an upper lifting surface of an airfoil, and having an upstanding generally planar vortex generating member. The forward edge portion of the member slants first...
4571192 Self propelled spherical vehicle  
A self-propelled spherical vehicle (10) for operation in a fluid medium utilizes an impeller (12) of approximately half the diameter of the sphere for propulsion. In addition to driving the...
Matches 1 - 50 out of 66 1 2 >