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7322546 |
Performance airplane wing with tip tank assembly
The present development relates to an improved wing having a tip tank assembly. The tip tank assembly is attached to a distal end of an outer wing section. The tip tank assembly includes a tank, a...
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7316371 |
Method and device for steepening a landing approach of an aircraft
To control and particularly steepen the landing glide path of an aircraft, a respective aerodynamic component mounted on each wingtip includes a fixed plane member and a pivotable control element...
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7100875 |
Apparatus and method for the control of trailing wake flows
A system and method for dissipating vortices that form at the wingtips on aircraft and from other airfoils. A jet air stream is discharged in a location at or proximate to the outer end portion of...
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7100867 |
Lifting foil
A lifting foil for an aircraft, a hydrofoil or the like having a pair of courses or wings. Vortex losses due to spanwise fluid flow are substantially reduced by joining the tips of the courses with...
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6892988 |
Cylindrical wing tip with helical slot
A device having the form of a cylindrical spiral cavity and/or incorporating a helicoidal slot, making it possible to reduce induced drag and marginal swirl (vortex) and increase drag/lift ratio....
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6722615 |
Wing tip extension for a wing
The present invention relates to a wing tip extension ( 7 ) for a wing, having an upper and a lower surface ( 10 and 11 ) and a leading edge and a trailing edge ( 12 and 13 ), the geometries of...
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6589017 |
Aircraft airfoil assembly and method
An aircraft rotatable airfoil assembly in the nature of a helicopter machine and having two airfoils diametrically disposed about an axis of rotation. Air baffles are mounted on the radially inner...
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6497600 |
Automatic pilot system for model aircraft
An automatic pilot system for a model airplane comprising one or more flexible control elements. When installed on a vertical stabilizer of the airplane, a flexible control element acts as an...
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6484968 |
Aircraft with elliptical winglets
An aircraft with swept back wings has winglets ( 202 ) at the outer ends of its wings ( 200 ). The winglets ( 202 ) curve upwardly as they extend outwardly from their intersection ( 204 ) with the...
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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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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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6345790 |
Subsonic aircraft with backswept wings and movable wing tip winglets
A subsonic aircraft having backswept lifting wings is equipped with individually rotatable winglets at the wing tips thereof, in order to reduce drag during cruise flight, to minimize the dangers...
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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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6171056 |
Technique for providing a signal for controlling blade vortex interaction noise of a rotorcraft
A technique for providing a signal representative of blade vortex interaction (BVI) noise for a multi-blade rotorcraft. The fluid (air) pressure at one, two, or more predetermined locations on a...
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6161797 |
Method and apparatus for reducing airplane noise
A modification of a 727 airplane, including a change in wing profile, to affect flight characteristics and the engines to lessen noise, such that the takeoff and landing procedure is modified so...
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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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5823480 |
Wing with a wing grid as the end section
A wing with a wing span (b) has a main part (1), which has a substantially closed surface with respect to the flow (v) and is provided at its free end with an end section in the form of a wing...
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5806807 |
Airfoil vortex attenuation apparatus and method
A vortex attenuating airfoil (24) includes an outboard area (28). The outboard area includes a deflector (40) which is disposed in the inboard direction from a tip (30). An air passage (46) extends...
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5738298 |
Tip fence for reduction of lift-generated airframe noise
The present invention is directed toward a unique lift-generated noise reduction apparatus. This apparatus includes a plurality of tip fences that are secured to the trailing and leading assemblies...
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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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5435502 |
Flying and road vehicle
A vehicle will serve as a road vehicle, as well as can be flown. The vehicle has a fuselage and a wing with a fixed span. The aspect ratio is low, allowing the vehicle to be operated on a normal...
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5407153 |
System for increasing airplane fuel mileage and airplane wing modification kit
A system is provided which enables winglets to be added to existing wing structures of 727 model aircraft to increase fuel efficiency while providing a means for redistributing additional loads...
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5348253 |
Blended winglet
The blended winglet is a wing-like device comprising a blended lifting surface attachable to each airplane wing tip so as to achieve minimum induced drag for a given surface size. The device...
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5275358 |
Wing/winglet configurations and methods for aircraft
A wing/winglet configuration, which basically comprises: (a) a wing having upper and lower wing surfaces, a wing leading edge, a wing trailing edge, and a wing tip; and (b) a winglet having upper...
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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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5156358 |
Aircraft outboard control
An outboard control surface for an aircraft. The control surface is operably connected to wing side edges of the aircraft and includes a forward flap and a rearward flap with at least one of the...
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5102068 |
Spiroid-tipped wing
The spiroid-tipped wing, in its basic form, comprises a wing-like lifting surface and a spiroidal tip device (i.e., spiroid) integrated so as to minimize the induced drag of the wing-spiroid...
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4781341 |
Flying wing aircraft
An ultralight aircraft having a generally rectangular, swept-back, single-surface wing. The wing, which is formed by fabric mounted on exposed spars and ribs, has a reflex profile to provide pitch...
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4776542 |
Aircraft stall-spin entry deterrent system
A system for deterring subsonic airplane stall-spin entry wherein a highly swept wing tip mounted lifting surface panel 18 (FIGS. 1-3) is attached to the tip of a main wing panel 14 and provides a...
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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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4722499 |
Auxiliary wing tips for an aircraft
Auxiliary winglets or control surfaces for aircraft wings are tiltable ab an axis extending in the flight direction and about an axis extending substantially perpendicularly to the flight...
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4714215 |
Aircraft wing and winglet arrangement
An aircraft wing has a winglet extending from the tip to reduce drag and thereby improve the efficiency of the aircraft. Hitherto such winglets, although they have succeeded in reducing drag, they...
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4674709 |
Airframe design
This invention relates to aircraft designs with substantial trim drag reduction while maintaining commercially feasible low parasitic and induced drag. The stable or control configured aircraft...
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4671473 |
Airfoil
This invention is an improved airfoil in the form of a plurality of controllable winglets which are used to reduce the stall characteristics of wing tips and to give them better lift capabilities....
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4598885 |
Airplane airframe
An airplane airframe having wings connected to the fuselage by spars of smaller cross section than the wings. Movable winglets may be provided at the outboard ends of the wings. The fuselage may be...
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4595160 |
Wing tip airfoils
The subject invention relates to a new and improved airfoil design. More particularly, an airfoil design is disclosed which improves efficiency by taking advantage of the vortex created at the wing...
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4541593 |
Aircraft providing with a lift structure incorporating multiple superposed wings
The invention relates to an aircraft provided on either side of its fuselage with at least one lift structure constituted by at least two wings whose distal ends are connected either to each other...
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4478380 |
Wing tip vortices suppressor
A wing tip vortices suppressor utilizing a scoop having an inlet at the lower, leading surface of the wing and an outlet at the upper, trailing surface to reduce turbulence causing pressure...
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4457479 |
Winglets for aircraft wing tips
A wing assembly in an aircraft includes a pair of wings and a winglet situated at each of the wing tips, the winglets or portions thereof being movably mounted. In order to avoid the need for...
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4382569 |
Wing tip flow control
A capture device at the tip of a fluid foil such that when the foil has relative motion with respect to fluid in which it is immersed the capture device intercepts a quantity of the crossflow which...
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4377267 |
Vortex tranquilizer
The purpose of this invention is to influence the behavior of the airflow near the wingtip, where the higher pressure air from below the wing swirls up over the end of the wing, to arrive at the...
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D259554 |
Aircraft
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4272043 |
Fluid stream deflecting members for aircraft bodies or the like
Devices to reduce the drag experienced by aircraft and other travelling bodies, comprising sail-like members mounted on the body surface. These members project into the local stream that forms...
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4247063 |
Flight control mechanism for airplanes
Retractable wing-tip mounted vanes are actuated from the normal cockpit controls of an airplane to provide both roll control and direct lift control. When not required, these devices retract into...
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4245804 |
Minimum drag wing configuration for aircraft operating at transonic speeds
A wing extension or tip fin is disclosed wherein the tip fin is joined to an aircraft wing to form a nonplanar wing configuration which minimizes induced drag during both low speed and high speed...
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4240597 |
Wing with improved leading edge for aircraft
A thin, high performance swept wing of the tapered type with an improved leading edge characterized by a first portion that extends from near the wing root at a fixed radius to a transition point...
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4238094 |
Aircraft wing fence
An improved fluid fence which reduces drag on solid objects moving through a fluid environment and an airfoil or aircraft wing structure having an improved open fence on its surface improving the...
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4190219 |
Vortex diffuser
The vortex system behind an aircraft is responsible for more than half of the aircraft drag in cruise flight and sometimes more in other flight conditions. The purpose of the vortex diffuser is to...
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4093160 |
Free vortex aircraft
An aircraft which produces a free vortex to provide the lift for takeoff and landing procedures has a single centrally mounted engine which supplies both the forward thrust to the aircraft and the...
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3845918 |
VORTEX DISSIPATOR
A vortex dissipator for the tip of an airfoil or hydrofoil lifting surface is formed as a fixed plate secured to the tip and aligned with the free stream direction. The plate extends forward from...
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