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WO/2004/067380A1 |
A proprotor blade (27a, 27b, 127a, 127b) having a fixed, spanwise, leading edge slot (215) located in at least the inboard portion of the proprotor is disclosed. The slot (215) is formed by a selectively shaped slat (217) disposed in a s...
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WO/2004/060662A1 |
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 bonding the backing layer to the surface ...
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WO/2004/059162A1 |
The invention relates to wind-power engineering, in particular to wind-powered generators which transform wind energy into electrical, mechanical, hydraulic and other type energy. Said invention makes it possible to increase the efficien...
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WO/2004/048871A2 |
The invention proposes a method and a device to generate an area of a mixture of fluids by introducing media having at least a different physical or chemical property into a boundary layer of a surface using vortices. The method and the ...
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WO/2004/041638A2 |
The outer skin (11) of an aerodynamic body (100) has an elongated surface opening (310) generating a virgin leading-edge (200) in the outer skin, and ingesting the approaching boundary layer flowing over the outer skin to achieve a virgi...
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WO/2004/041640A2 |
An aircraft wing includes a leading airfoil element (36) and a trailing airfoil element (38). At least one slot (12) is defined by the wing during at least one transonic condition of the wing. The slot (12) may either extend spanwise alo...
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WO/2004/001267A2 |
The present invention features a fluid flow regulator (210) that functions to influence fluid flow across a surface such as a rotating or rotary device, including propellers, impellers, turbines, rotors, fans, and other similar devices, ...
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WO/2004/000642A1 |
An airship (20) has a generally spherical shape and has an internal envelope (24) for containing a lifting gas such as Helium or Hydrogen. The airship has a propulsion and control system (36, 38) that permits it to be flown to a desired ...
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WO/2003/106260A1 |
A method of controlling fluid flow (14) in a boundary layer at a fluid-surface interface comprising, providing a plurality of blades (11) which project from the fluid contracting surface into a boundary layer such that in use the blades ...
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WO/2003/089295A2 |
The outer skin (100) of an aerodynamic body (40) has perforations (200) arranged in particular patterns in respective spanwise extending groups or bundles (250). Each perforation is preferably a micro-slot with a length of 100 to 3000 µ...
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WO/2003/087604A1 |
The invention relates to a solid body consisting of plastic, glass, ceramic or metal, and at least partially comprising a microstructured surface with rows of trapezoidal or wedge-shaped grooves which are oriented in a preferred directio...
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WO/2003/072433A1 |
The invention relates to an installation device for accommodating a roller drive unit (6) which propels and conveys articles. Said installation device comprises a frame element (R1) that can be inserted between fastening elements (19) an...
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WO/2003/067169A2 |
A flexible composite sheet or FCS (100) comprising a membrane (102), a substrate (106) coupled to the membrane (100), and a plurality of ridges (104) coupled between the membrane (102) and the substrate (106), wherein a vibratory motion ...
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WO/2003/045778A1 |
This application concerns a method and system using a hydrodynamical effect for producing a potential over a body. The force obtained this way is useful for the propulsion and manoeuvering of ships, submarines, aeroplanes, and airships. ...
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WO/2003/039949A2 |
Wing able to enhance lift power by inner air flow, is solution of wing that results in increased and changeable lift power, with lesser increase of aerodynamic resistance than with conventional wings. In the invention basic embodiment, t...
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WO/2003/020584A1 |
The present invention relates to a wing of a flying object for flapping motion, which comprises a wing frame and a wing cloth, the wing cloth having a repeated curved surface substantially to the direction of flying of the flying object ...
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WO/2003/000483A1 |
The invention relates to surfaces and combinations of surfaces, which have at least two different structure shapes. Said structural shapes can take the form of any combinations of directed or nondirected structures, the main dimensions t...
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WO/2002/102613A2 |
A hybrid air boost vehicle makes use of the porous panels (1) and suction devices (5) of a vehicle aerodynamic drag reduction system, and makes use of the air consumed by such a system, to provide the energy and air to power a land or wa...
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WO/2002/092428A1 |
Upper surface (13) of an aerofoil (or rotor blade) is provided with nozzles or slots (14, 16) at leading portion (15) and trailing portion (17) to assist attachment of airflow by discharging gas towards trailing edge (11). Gas discharged...
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WO/2002/081303A1 |
The present invention relates to apparatus (3) for influencing fluid flow over a surface (1), and more particularly, but not exclusively, to turbulent boundary layer flow drag reduction for an aircraft. The present invention provides suc...
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WO/2002/072421A2 |
The present invention involves a system for altering the aerodynamic shape and&sol or fluid flow about a solid body.(110). The preferred embodiment comprises an obstruction (130) disposed on the solid body and extending outwardly from th...
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WO/2002/064422A1 |
Formations on the surface of bodies for reducing the drag relative to a medium which the body is located in or close to. The formations comprise a plurality of cavities (1,20,40,60). The surface in which the cavities are formed is closed...
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WO/2002/038442A2 |
Micro-electro-mechanical (MEM) translational tabs (26) are introduced for enhancing and controlling aerodynamic loading of lifting surfaces. These microtabs (26) are mounted at or near the trailing edge (24) of lifting surfaces, deploy a...
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WO/2002/037661A1 |
An actuator device controlling the shape of a flexible surface having a quasi-continuum in a plurality of locations. The device includes a plurality of individual cells arranged in an array for contact with the flexible surface. The cell...
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WO2001096178B1 |
It is proposed to add ducts to conventional aerodynamic components to better utilize the elasticity of for example, air. The objective of the invention is to enable more efficient, lower power, and more versatile flight and propulsion.
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WO/2001/076934A1 |
A method is provided to select appropriate material properties for turbulent friction drag reduction, given a specific body (1), configuration and freestream velocity (2). The method is based on a mathematical description of the balance ...
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WO/2001/000488A1 |
A laminar flow control system for incorporation in, for example, an aircraft flying surface includes a suction panel comprising a perforated skin (20, 40) mounted on a base member (60), a plenum chamber (30) being in communication with a...
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WO/2000/070369A1 |
The invention relates to a device for improving the quality of wind measurement provided by weather balloons that have an inflatable housing and are equipped with a GPS-type probe, during the ascent phase. Said device is characterized in...
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WO/2000/055036A2 |
The nozzle of an acoustic jet directs high momentum flux gas particles essentially tangentially into the boundary layer of the flow in a diffuser, an engine air inlet, a jet engine gas flow path or on the suction surface of an airfoil, t...
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WO/2000/050779A1 |
Blades, including helicopter rotor blades, gas turbine engine fan blades, air moving machinery fan blades, and the like, have an air inlet near the hub of the blade, which may be on the pressure side of the blade and/or near the leading ...
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WO/2000/048206A1 |
A novel material, which is artificially produced, solid, stable morphological mutant of chemically known mineral materials is provided. The material is capable of being activated by exposure to an electric field or physical pressure into...
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WO/2000/039467A1 |
An actuator device providing an active surface. The actuator has a base (23) having at least one first electrostatic electrode mounted therein which is oriented for electrostatic cooperative action with an opposing electrostatic electrod...
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WO/2000/018641A1 |
The invention concerns a load-bearing structure such as a wing provided with serrated plates (16) on its free edges for breaking tip vortex generated in those places by distributing the fluid pressure. The vortex dissipation is accelerat...
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WO/1999/058250A1 |
In order to increase the power of fast flowing media, the wall surface (2) of a solid body (1) along which the medium flows, is provided with a plurality of recesses (3; F1, F2, F3) that extend by at least one length (1) in the direction...
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WO/1999/054199A1 |
A fluid flow control device, comprising a flow surface over which a fluid (F) flows, a flow effect means (26) located on the flow surface and operated by pressure such that the flow effect means improves the flow characteristics of the f...
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WO/1999/044888A1 |
The present invention pertains to the field of machine-tooling and more precisely relates to apparatus located and operating in a viscous flowing medium. The method for producing a lift force comprises generating a difference between the...
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WO/1999/026457A1 |
Briefly described, the present invention is concerned with cooling heating bodies and/or heated fluid with synthetic jet actuators (10) in either open or closed systems. A first preferred embodiment of a cooling system of the present inv...
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WO/1999/020526A1 |
An air intake system (10) for a turbo engine, wherein external engine boundary layer separation drag and external engine friction drag may be selectively reduced. A first air exit port (16) in the form of a plurality of air exit jets (30...
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WO/1998/047761A1 |
An aircraft wing, wing assembly and method of reducing drag are provided. The wing assembly includes a main wing portion (10) and a leading edge high lift portion (12). The high lift portion is movable between a retracted position in whi...
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WO/1998/009868A2 |
A noise suppression system for a jet engine, the system having a substrate formed of open cell material, a layer of microporous material covering at least a portion of one surface of the substrate, a layer of substantially non-porous mat...
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WO/1998/008677A1 |
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 intermediate layer for bonding the outer layer t...
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WO/1998/007621A1 |
This invention concerns an aircraft fuselage with several constrictions (3) on the outer circumference which produce zones (8) with diminished air pressure and friction drag.
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WO/1997/035105A1 |
A diverterless engine inlet (10) system that integrates a "bump" (20) surface with a forward swept, aft-closing cowl (30) to divert substantially all of the boundary layer air from the inlet. The bump includes an isentropic compression s...
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WO/1997/021931A1 |
According to the process of the invention, a surface for contact with a fluid which flows over the surface in a direction (A) has grooves (1) to prevent burbling at low local Reynolds numbers; said grooves (1) extend between a closed ent...
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WO/1997/018990A1 |
An apparatus for controlling a boundary layer in a flow of an electrically conductive fluid moving relative to a surface in a free-stream direction comprises a plurality of selectively actuated control region tiles (406, 506) distributed...
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WO/1997/012804A1 |
In an aircraft (1) according to the invention the engine drives a blower and the compressed air is used to increase the lift of the wing (18) and the canard (22) using jet flap propulsion. The airfoil profile has maximum thickness just f...
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WO/1996/036532A1 |
A passive porosity airfoil lift management device employed on a leading edge region (19) of the airfoil (1) whereby the lift on the airfoil (1) may be varied and controlled by passively transferring air pressure between the upper surface...
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WO/1996/014242A1 |
A movable sheet (22) overlying a wing (20) is disclosed that creates laminar flow over its exposed surface. The movable sheet (22) serves as a shield for protecting a suction support structure (24) of a wing (20) against contamination, a...
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WO/1995/032122A1 |
The proposed boundary layer control device is designed in the form of a cavity (1) on the surface of the object in question, within which a central body (4) is arranged in such a way that an annular channel (5, 6) is formed between the c...
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WO/1995/019290A1 |
An aerodynamic low drag structure (12) has a skin (18, 19, 20) which in movement of the structure (12) relative to a surrounding gaseous fluid medium produces at a flow control region of the skin (18) laminar flow in a boundary layer adj...
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