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7614588 |
Apparatus system and method for drag reduction
An apparatus, method and system for combining aerodynamic design with engine power to increase synergy between the two and increase climb performance, engine-out performance, and fuel efficiency...
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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...
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7484589 |
Apparatus and method for reducing aircraft noise and acoustic fatigue
An apparatus and method is provided for attenuating aerospace engine noise and unsteady pressure fluctuations associated with high velocity exhaust flows. The apparatus and method reduce acoustic...
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7318619 |
Method and apparatus for reducing drag and noise for a vehicle
A body part including a surface having a fluid flow thereover. The body part also includes flocking coupled to at least a portion of the surface that adjusts an aerodynamic characteristic relative...
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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....
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7150435 |
Type aircraft
The present invention relates to a new type aircraft. The aircraft includes the airframe and wing, characterized in that the transverse section of airframe has an oblate (oval) profile with...
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7118071 |
Methods and systems for controlling lower surface shocks
Methods and systems for controlling shocks on airfoil lower surfaces are disclosed. An airfoil in accordance with one embodiment of the invention includes an upper surface portion having an upper...
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7070850 |
Drag reduction article and method of use
An article for reducing the drag caused by a fluid flowing over a surface comprises a backing layer having an outer, exposed patterned surface that reduces drag, and an adhesive bonding layer for...
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7041363 |
Solid body with microstructured surface
The invention relates to a solid body of plastic, glass, ceramic or metal which has at least partially a microstructured surface with rows oriented in a preferential direction of cross-sectionally...
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6892989 |
Method for reducing the drag of blunt-based vehicles by adaptively increasing forebody roughness
A method for reducing drag upon a blunt-based vehicle by adaptively increasing forebody roughness to increase drag at the roughened area of the forebody, which results in a decrease in drag at the...
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6789769 |
Flexible airflow separator to reduce aerodynamic noise generated by a leading edge slat of an aircraft wing
A slat is selectively extended from a main wing body, with a concave rear surface of the slat facing a convex forward nose surface of the wing body, with a slat gap therebetween. At least one row...
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6644598 |
Modification of fluid flow about bodies and surfaces through virtual aero-shaping of airfoils with synthetic jet actuators
The present invention involves a system for altering the aerodynamic shape and/or fluid flow about a solid body. The preferred embodiment comprises an obstruction disposed on the solid body and...
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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...
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6588709 |
Apparatus for variation of a wall skin
The present invention provides an apparatus and method for varying a wall skin to alter airflow over the skin. The apparatus has a first and second end-plates, a plurality of flexible rods are...
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6484971 |
Control of flow separation and related phenomena on aerodynamic surfaces
Method and apparatus for suppressing fluid flow separation from a surface of a body during flow of a fluid along the surface of the body. At least one barrier member (for example, at least one tab)...
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6431498 |
Scalloped wing leading edge
An apparatus to modify a wing to provide increased lift over drag ratios compared to similar wings with straight leading edges. For wings extending in a lateral direction, and defining a...
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6412732 |
Apparatus and method for enhancement of aerodynamic performance by using pulse excitation control
One aspect of the apparatus disclosed herein is a system for modifying an aerodynamic property of an aerodynamic surface in a fluid flow. The fluid flow could comprise a free stream fluid flow, or...
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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...
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6276636 |
Gas or fluid de-organizers for moving objects
Tabs are placed on a moving object in order to de-organize the fluid or air, passing over the moving object. The tabs can be any type of protrusion on the body of the moving object. The placement,...
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6193191 |
Modified surface for reducing the turbulences of a fluid and transportation process
The invention is a structure for inhibiting the turbulence phenomena of a fluid, exhibiting a surface geometry comprising at least one series of inhibition surfaces which inhibit turbulence present...
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6134485 |
System and method for measuring physical parameters using an integrated multisensor system
A system and method for analyzing physical parameters of flight data at a plurality of discrete locations about a surface of an aircraft includes a multisensor system having an array of belts. Each...
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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...
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6092766 |
Process for forming a surface for contact with a flowing fluid and body with such surface regions
A surface for contact with a fluid, flowing in a flow direction (A) over the surface, is provided with grooves (1) to prevent flow separations at low, local Reynolds numbers. The grooves extend...
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6056238 |
Supersonic ground vehicle
A supersonic ground vehicle having a housing configured from a pair of back-to-back symmetric housing components, and a shock-reflecting surface which extends in the direction of travel of the...
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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...
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5971326 |
Surface for a wall subject to a turbulent flow showing a main direction of flow
A surface (2) is intended for a wall which is subject to a turbulent flow with a main direction of flow. The surface (2) has projecting ribs (6) oriented in the main direction of flow and spaced...
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5884871 |
Use of absorbing walls for laminar flow control
A method is provided for hypersonic laminar flow control which uses the effect of boundary layer stabilization by an ultrasonically transparent coating. A hypersonic body surface is covered by the...
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5860626 |
Surface of a body exposed to circumfluent fluid
The invention relates to a surface of a body exposed to circumfluent fluid with elevations protruding from the base surface. In order to design the surface of a body exposed to circumfluent fluid...
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5848769 |
Drag reduction article
An article for reducing the drag caused by a fluid flowing over a surface comprises an outer layer having an exposed patterned surface that reduces drag, an inner reinforcing layer, and an...
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5788191 |
Half-plow vortex generators for rotor blades for reducing blade-vortex interaction noise
In one embodiment for a helicopter main rotor assembly, a half-plow vortex generator is mounted in combination with the upper aerodynamic surface of each main rotor blade and is operative to...
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5785282 |
Half-plow vortex generators for rotorcraft blades for reducing blade-vortex interaction noise
In one embodiment for a helicopter main rotor assembly, a half-plow vortex generator is mounted in combination with the upper aerodynamic surface of each main rotor blade and is operative to...
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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...
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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...
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5575442 |
Guided wing for aircraft flying at high angles of attack
The invention is directed to an apparatus for attaching to a wing operating in a fluid medium for increasing the angle of attack at which the wing experiences aerodynamic/hydrodynamic stall. The...
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5542630 |
Control of fluid flow
Measures are disclosed for modifying the boundary layer flow over fluid dynamic surfaces using patterns of riblets which are set at a peak-to-peak spacing substantially less than 80 wall units and...
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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...
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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...
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5505409 |
Supercavitating airframe
A method is described for reducing drag in airframes or airfoils. The method includes inducing cavitation in the boundary layer separating the airframe or foil skin and the air currents passing...
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5492289 |
Lifting body with reduced-strength trailing vortices
A lifting body moves relative to a fluid, thereby creating a vortex field in the fluid downstream of the lifting body. The lifting body has a predetermined lift distribution along the length...
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5449136 |
Fairing for obtaining steady stabilization effects
A fairing for providing vortex stabilization effects to a solid submerged in a fluid with relative movement thereof between the solid and the fluid. A cavity is provided in the fairing for...
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5433404 |
Airfoil with variable geometry expansion surface
A wing, or similar article of airfoil section, has a variable geometry surface for the active control of shock strength and transonic wave drag. In one embodiment, the wing has a region of...
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5402964 |
Interference with vortex formation and control of fluid flow to reduce noise and change flow stability
Apparatus for the interference and manipulation of vortex formation and control of fluid flow to reduce noise and increase flow stability is provided. A specific embodiment is directed to a...
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5395071 |
Airfoil with bicambered surface
An improved airfoil using bicambered surfaces to promote laminar flow, attached flow, reattachment of flow, delayed flow separation and to achieve high angle-of-attack performance. Bicambered...
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5322246 |
Ice prevention device for airfoils
An aft facing step situated across the span of an airfoil. A chemical or thermal deicing or running wet anti-icing device is located in or on the airfoil upstream of the step, and causes water to...
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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...
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5289997 |
Apparatus and method for reducing drag on bodies moving through fluid
In order to increase energy efficiency by reducing the drag experienced by bodies moving through a fluid medium, such as tractor-trailers, structure is incorporated in the rear surface or panel of...
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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...
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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...
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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...
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5178348 |
Contoured wing/flap assembly and method
A wing flap assembly having a contoured upper forward surface portion of the flap being arranged to reduce adverse effects of a wake producing device, such as a landing gear or a flap track faring,...
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