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7241113 |
Vorticity control in a gas turbine engine
An arrangement for reducing vorticity downstream of a turbine nozzle guide vane 34 in a gas turbine engine. The arrangement including directing cooling air through the guide vane 34 and out...
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7150434 |
Vehicle wake vortex modifier
Wake vortices are made less detectable or reduced in their effect on nearby vehicles by re-orientation of vorticity about an axis in the direction of vehicle motion to transverse vorticity...
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7114685 |
Wing for an aircraft or spacecraft
The invention relates to a wing, a wing, a tail unit or grid fins for a flying object moving with supersonic speeds. The wing comprises leading edges and tailing edges. According to the invention,...
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6964397 |
Nacelle chine installation for drag reduction
An apparatus and a method for reducing drag over an aircraft wing assembly in operational angle of attack situations are disclosed. The aircraft wing assembly includes a wing and an engine nacelle...
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6908063 |
Vortex shedding and drag force reduction
Smoothly curved protuberances ( 8, 26, 34 ) are added to an elongate body ( 2, 16, 18, 20, 22, 32 ) to modify the fluid flow to reduce the drag Force F drag and the forces induced by vortex...
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6719246 |
Process and device for accelerating the destruction of at least two vortices in the wake of a moving body, particularly an aircraft
A device for accelerating the destruction of contra-rotating vortices formed at the rear of wings of a moving body by the merging of at least two co-rotating eddies includes, on each of the wings,...
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6607168 |
Bearing structure with reduced tip vortex
The bearing structure such as a wing is fitted with toothed platelets ( 16 ) at its free edges to break tip vortex produced at these places by fluid pressure distribution. Vortex dissipation is...
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6601348 |
Structures for mitigating wind suction atop a flat or slightly inclined roof
An apparatus secured to extend upwardly from a rooftop for redirecting free oncoming flow of a gas passing over an edge of the rooftop. The apparatus has an elongated member having at least a lower...
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6578798 |
Airlifting surface division
This airlifting surface division idea provides for division of airlifting surfaces resulting in low induced and interference drag. It can be applied to aircraft wings and helicopter and windmill...
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6520449 |
Lifting platform with positive horizontal stability
A novel means of stability for a lifting platform utilizing toroidal vortex airflow through air guide means. A toroidal vortex created by the airflow means efficiently maintains a raised air...
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6513761 |
Method and apparatus for reducing trailing vortices in the wake of an aircraft
Harmful trailing vortices downstream of an aircraft wing are at least partly dissipated by a respective counteracting vortex for each trailing vortex at each wing. An auxiliary counteracting vortex...
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6491260 |
Noise reducing vortex generators on aircraft wing control surfaces
Vortex generators are arranged on the edges of aircraft wing control surfaces to generate smaller vortices that weaken the main vortex that would otherwise be generated at these areas, and thereby...
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6409126 |
Passive flow control of bluff body wake turbulence
The present invention provides an apparatus and system for controlling turbulence generated by medium passing about a bluff body disposed on a generally planar flow surface. An aft fairing, of a...
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6394396 |
Aerodynamic noise reducing structure for aircraft wing slats
A hollow expandable and contractible displacement element is secured onto the concave rear surface of a slat facing the leading edge of an aircraft wing. A bleed air line supplies engine bleed air...
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6318677 |
Method and apparatus for generating a stable leading-edge lifting-vortex controller
Method and apparatus for generating a stable leading edge lifting vortex controller that significantly improves flight control and safety of an aircraft. More specifically, in a preferred...
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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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6186445 |
Method and apparatus for mitigating junction flows
An apparatus and method for mitigating the formation of the necklace vortex in junction flows is disclosed. A lifting structure for inducing a positive lift vector and having at least one tip for...
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6161802 |
Trapped vortex airfoil nose
An airplane has a plurality of airfoils with leading edges. A partition and a nose cap are located at a forward surface of the airfoil, creating upper and lower cavities. The nose cap may be...
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6152404 |
Apparatus for influencing a wing root airflow in an aircraft
An apparatus advantageously influences the wing root airflow along the wing root of an aircraft having a high lift system including leading edge slats provided on the main wings. The apparatus...
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6131853 |
Micro-drag generators for aerodynamic and hydrodynamic braking and control
An apparatus and method for generating large drag forces on an object moving through a gas or liquid for braking and/or turning the object by deploying on the exterior surface of an object a very...
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6126118 |
Flow separator reducer
A flow separation reducer comprises a vane which prevents an airflow from being separated in a flow interference region where a plurality of members, such as a main wing and a pylon, are joined to...
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6042059 |
System and method of vortex wake control using vortex leveraging
This invention relates to a system and method for reducing the primary vortex wake structure generated by a lifting body mounted on an object moving through a fluid. This is achieved by first,...
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5901925 |
Serrated-planform lifting-surfaces
A novel set of serrated-planform lifting surfaces produce unexpectedly high lift coefficients at moderate to high angles-of-attack. Each serration, or tooth, is designed to shed a vortex. The...
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5749546 |
Method and apparatus for reducing airframe aerosound
A method and apparatus for reducing noise produced by the airframe of an airplane in flight. The present invention provides a smooth, continuous, arcuate surface, such as a rounded edge cap, for...
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5634613 |
Tip vortex generation technology for creating a lift enhancing and drag reducing upwash effect
Methods for using tip generated vortices to improve performance of foils. These methods include generating a substantially streamwise beneficial vortex (74) near the outboard end (60) of a foil...
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5496001 |
T-38 aircraft modified with an F-5 wing
A T-38 trainer aircraft that is modified to have the wings of an F-5 fighter aircraft. The F-5 wings have leading edge flaps which increase aircraft maneuverability and allow the plane to be landed...
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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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5374013 |
Method and apparatus for reducing drag on a moving body
A method of and apparatus for reducing drag produced by relative air movement on a moving body are disclosed. The method includes the steps of modifying a rear air pressure behind a rear of the...
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5282591 |
Active vortex control for a high performance wing
An on-demand wing vortex control system includes a pair of retractable pas which extend forward through slots in the leading edges of the strake and main wing at their junction. When not in use,...
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5255881 |
Lift augmentation for highly swept wing aircraft
A pair of spaced slots, disposed on each side of an aircraft centerline and spaced well inboard of the wing leading edges, are provided in the wing upper surfaces and directed tangentially spanwise...
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5249762 |
Strakes for landing speed reduction
An engine inlet having strakes for landing speed reduction on a trapezoidal wing shaped aircraft, specifically the T-38. The strakes are mounted on the engine inlet just forward of the wing leading...
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4884772 |
Cantilevered vortex control device
A vortex control device is designed for installation on the exterior surface of an aircraft nacelle in a position which does not compromise the optimum aerodynamic performance of the vortex control...
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4860976 |
Attached jet spanwise blowing lift augmentation system
A lift enhancing system for an aircraft having wings and a deflectable airfoil attached to the trailing edge of the wing which includes ejecting nozzles attached to and movable with each...
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4739957 |
Strake fence flap
The strake fence flap is a device which may be tailored to the aircraft to augment the low-speed lift of canard-configured general aviation aircraft with little or no longitudinal trim change and...
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4738479 |
Mobile car stabilizer actuating device
A device comprising a movable panel, designed to support a stabilizer by means of at least one rib; an opening in the car bodywork, the edge of which opening presents substantially the same shape...
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4685643 |
Nacelle/wing assembly with vortex control device
In a nacelle and wing combination where a vortex is shed from a side surface portion of the nacelle and said vortex burst prematurely to reduce lift, the improvement comprising a vortex control...
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4648571 |
Transverse thrust lift augmentation system
Disclosed is a propulsive lift mechanism which improves the short takeoff and landing capabilities of an aircraft by generating transverse thrust lift augmentation by exhausting gasses ported from...
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4569494 |
Pitch control of swept wing aircraft
A pair of vanes (26, 28) extend laterally outwardly from the fuselage (10) of a swept wing aircraft immediately forwardly of the wings (12, 14). The preferred vanes (26, 28) have a trapezoidal plan...
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4540143 |
Nacelle/wing assembly with wake control device
In a wing and nacelle combination, where the nacelle is positioned below and forwardly of the wing leading edge, a wake control device to control a turbulent wake which is formed at the upper...
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4489905 |
Nacelle-pylon configuration for an aircraft and method of using the same
A below-wing engine nacelle mounted by a pylon forwardly of a wing having a rearward sweep. The pylon upper outboard edge that extends forwardly of the wing is formed with a relatively sharp radius...
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4466587 |
Nacelle installation
Nacelle installation having devices for constraining hot core exhaust gas from flowing over the trailing portion of a highly swept pylon supporting a high bypass turbofan engine. The devices can...
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4444367 |
Aerofoil bodies
An aerofoil body, for example a "delta" wing aircraft, in which strip-form devices project rearwards from the trailing edge of the wing and serve to improve the lift-to-drag ratio of the body, in...
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4434957 |
Low drag surface
A low drag surface comprises at its upstream edge an intermittent linear vortex producing means extending transverse to the flow of fluid across the surface. The vortex producing means produces a...
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4429843 |
Counter-rotating vortices generator for an aircraft wing
A device for enhancing the lift capability of an aircraft wing is characterized by at least one forwardly projecting finger member mounted on the leading edge of the wing. The finger generates...
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4418880 |
Fluid flow augmentor
There is described a fluid flow concentrating device suitable, for example, for concentrating the flow of tidal waters or of wind, which comprises a hollow body closed at one end and open at the...
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4378922 |
Aircraft having improved strake configuration
An aircraft has a series of strakes in the form of laterally projecting bs (low aspect ratio semi-delta type aerofoils) extending longitudinally rearwards from and on each side of the nose, each...
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4293110 |
Leading edge vortex flap for wings
A series of flaps along the leading edge of a highly swept-back wing for a supersonic airplane; wherein, the spanwise series of flaps comprise a double-flap chordwise having fore and aft flap...
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4291853 |
Airplane all-moving airfoil with moment reducing apex
Disclosed is an airplane all-moving airfoil having a moment reducing apex for facilitating control of the airfoil. In a preferred embodiment, the apex protrudes forward from the leading edge of an...
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4267990 |
Method for steering an aircraft
The present aircraft steering method makes use of additional lift gained by ontrolling the separating of vortical flows from the leading edges of the wings for the purpose of controlling the...
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4222242 |
Fluid flow transfer
A method and apparatus for transferring energy from a first fluid flow to a second fluid flow via vortex generating means. Various embodiments and various support means for elements of the...
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