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7558653 |
Autopilot system for a helicopter
The present invention relates to an autopilot system for a rotary wing aircraft operating relative to at least two pilot axes, which system comprises, for each of the two axes, at least one...
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7503527 |
Flight control method and apparatus to produce induced yaw
A method of controlling an aircraft in a turn without the use of a rudder by producing induced yaw. Induced yaw being produced by creating a net induced drag differential between an inboard wing to...
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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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7475853 |
Method and system for regulating external fluid flow over an object's surface, and particularly a wing and diffuser
The present invention features a fluid flow regulator that functions to significantly influence fluid flow across the surface of an object, as well as to significantly effect the performance of the...
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7410133 |
Miniature trailing edge effector for aerodynamic control
Improved miniature trailing edge effectors for aerodynamic control are provided. Three types of devices having aerodynamic housings integrated to the trailing edge of an aerodynamic shape are...
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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...
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7367532 |
High lift longitudinal axis control system
A bipartite, full span airplane flap system having an inboard flap portion and an outboard flap portion, wherein the outboard flap portion includes an integrated aileron mounted on its...
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7357358 |
Aircraft leading edge device systems and corresponding sizing methods
Aircraft leading edge device systems and methods for sizing such systems are disclosed. In one embodiment, a spanwise lift coefficient distribution for an airfoil corresponding to at least one...
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7290738 |
Dual jet emerging lift augmentation system for airfoils and hydrofoils
Separate upper and lower plenums within an aircraft airfoil or a sea hydrofoil conduct fluid under different pressures to nozzle slots from which jets emerge to augment lift in accordance with...
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7226015 |
Aircraft and missile forebody flow control device and method of controlling flow
The present invention relates to a forebody flow control system and more particularly to aircraft or missile flow control system for enhanced maneuverability and stabilization at high angles of...
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7108230 |
Aircraft with topside only spoilers
An aircraft with swept back wings and spoilers inlaid into the top surface near the tips of the wings. The aircraft also includes an elevator formed in the center back portion of the aircraft,...
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6834835 |
Telescopic wing system
The present invention is a wing having telescoping segments deployed via an actuator composed of a heat activated material. The actuator is a coiled tube of shape memory alloy (SMA) with large...
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6834830 |
Main wing structure
A main wing structure comprises at least a leading edge structure and a wing central structure coupled to each other, and has a particular laminar-flow airfoil. The laminar-flow airfoil includes an...
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6669142 |
Lifting arrangement for lateral aircraft surfaces
Lifting arrangement for lateral aircraft surfaces that consists of numerous lateral flutings, grooves, splines, flutes or riblets parallel to each other, arranged on the lateral surfaces of...
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6651935 |
Method and apparatus for control of shock/boundary-layer interactions
Apparatus for controlling shock/boundary-layer interactions created by a supersonic shock on a surface of a structure, includes a cavity formed in the structure and having an opening on the...
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6641089 |
Flap arrangement for varying the aerodynamic lift generated by an aerodynamic element of an aircraft
An auxiliary flap is movably arranged on a planar trailing edge of an aerodynamic element such as a wing, rudder, stabilizer, or flap. The auxiliary flap is rotatable and/or slidable relative to...
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6592072 |
Spanwise tailoring of divergent trailing edge wings
A method for forming a transonic wing that segregates a baseline transonic wing into a plurality of airfoil segments that are collectively modified an optimized so as to tailor a spanwise variation...
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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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6478251 |
Flier structure
A flier structure including a fuselage extending from front side to rear side and a weight body connected with front end of the fuselage. A port wing and a starboard wing respectively leftward and...
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6474604 |
Mobius-like joining structure for fluid dynamic foils
This invention, though preferably applied to aircraft structure, has application to foil-bearing devices in general, creating structure somewhat similar to the structure of a mobius band surface...
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6467732 |
Rotary blade of helicopter
A base wing 11 , as attached at its root end portion to the rotor head of a rotational drive unit, is provided with a front wing 12 and a rear wing 13 having substantially equal spans. The...
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6457671 |
Funneled rotary foil
A funnel strip is added to a rotary airfoil, which utilizes the Bernoulli principle to increase the velocity of air over the suction side of the rotating airfoil to increase the lift. The device is...
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6431499 |
Wing comprising a distal wing grid
In a wing with a main wing part ( 1 ) and a drag-reducing wing grid arranged at a distal end of the main wing part, a grid includes at least two winglets ( 2 ) staggered in parallel and with an...
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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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6394397 |
Lifting surface with active variable tip member and method for influencing lifting surface behavior therewith
A tip member is movable mount at the outboard end of a main lifting member such as a wing or rotor blade. The main lifting member at least at the outboard end has an internal cavity defined therein...
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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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6286789 |
Configurable aerial vehicle aerosurface
A configurable aerial vehicle aerosurface is disclosed, The configurable aerial vehicle aerosurface includes first and second airfoil surfaces in sliding engagement. A plurality of apertures pass...
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6260809 |
Ovate loop for rotary-wing blades
Blade vortex interaction (BVI) noise, associated with the operation of aircraft having rotary-wing blades, is abated by the inclusion of an ovate loop tip (20) at the tip portion (16) of each of...
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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...
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6138954 |
Aircraft funnel slat system
Aircraft air funnel slat system of this invention for increased lift to aircraft wings and rotors comprises a pair of symmetrical and retractable slats or flaps or planks or other similarly shaped...
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6102328 |
Method for reducing wave resistance in airplane
A method to reduce the wave resistance of an airplane by disposing a fluid element such as an engine nacelle at a predetermined position on an upper surface of a main wing, positively superposing...
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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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6045095 |
Vane-airfoil combination
A vane-airfoil combination for shifting forces associated with an airfoil. The vane-airfoil combination includes an airfoil moving through a fluid, such as air. A plurality of vanes is positioned...
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5848768 |
Laminar flow skin
Apparatus for the control of boundary layer fluids by a suction technique, the said apparatus being adapted to form part of or attach to a fluid dynamic surface and comprising; a sandwich skin...
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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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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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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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5518210 |
Seal plate for aircraft movable flight control surfaces
A fixed seal plate for an aircraft functions to seal the gap between a movable flight control surface and its associated airfoil when the control surface is in a deflected position. The seal plate...
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5457630 |
System for onboard lift analysis and apparatus therefor
A method and apparatus for measuring the lift generated by airfoils of an aircraft. This real-time analysis is accomplished by measuring a differential pressure between the upper and lower lift...
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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...
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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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5265830 |
Trailing edge splitter
A plate projecting in an aft direction from the blunt trailing edge of a wing. The plate extends across the span of the trailing edge, and may be either planar or curved in the spanwise direction....
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5230486 |
Underwing compression vortex attenuation device
A vortex attenuation device is presented which dissipates a lift-induced vortex generated by a lifting aircraft wing. The device consists of a compression panel attached to the lower surface of the...
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5213287 |
Wing modification method and apparatus
A modification kit for the DeHavilland DH-2 Beaver and the DH-3 Otter aircraft. A replacement leading edge is provided for the wing together with replacement droop wing tips and a wing fence. A...
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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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5123368 |
Laminar air-flow sail
Rows of closely spaced apertures are installed in a sail to control boundary layer air flow over a sail to laminar flow type by "bleeding" high energy air from the windward or concave side of the...
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5088665 |
Serrated trailing edges for improving lift and drag characteristics of lifting surfaces
An improvement in the lift and drag characteristics of a lifting surface is achieved by attaching a serrated panel to the trailing edge of the lifting surface. The serrations may have a saw-tooth...
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5076516 |
High drag airfoil apparatus
Disclosed are airfoil structures which provide two distinct mean centers of lift and high induced drag. Also disclosed are aircraft structures employing such high-lift high-drag airfoils for both...
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5071088 |
High lift aircraft
A high lift vertical takeoff and landing aircraft has first and second fuselages connected by a central airfoil. Jet engines at the leading edge of the airfoil expel propulsive streams...
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