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7461819 |
Method for using a steerable tall fin to reduce the vibration generated on the fuselage of a helicopter
A method and a device reduces the vibration generated on the structure 17 of a helicopter 2 by the flow of air through the main rotor 5 and by the flow of air along the fuselage 3 . The...
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7451949 |
Method for using a tiltable stabilizer to reduce vibration generated on the fuselage of a helicopter
A method and a device allow for reducing the vibration generated on the structure 17 of a helicopter 2 by the air flow through the main rotor 5 and by the air flow along the fuselage 3. The...
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7410120 |
Control surface assemblies with torque tube base
Control surface assemblies having a torque tube base are disclosed. In one embodiment, a control surface assembly includes a control surface portion and a base portion. The base portion has a...
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7338011 |
Method making it possible to prevent vibration of a rudder of an aircraft and aircraft using this method
A method for preventing vibration of a rudder of an aircraft may have, on a lateral aerodynamic surface of the aircraft's rudder, a protruding aerodynamic element capable of generating an...
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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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7229046 |
Servo mounting system for direct drive of an aircraft control surface
This invention is a servo mounting system, which allows a servo with a rotating output shaft to directly power an aircraft control surface. A specially designed servo mount securely positions the...
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6997413 |
Flying amphibious SUV
The amphibious aircraft has two top mounted wings and an engine having a rear mounted propeller. The aircraft also has a tail having two wings mounted in a V-shaped fashion. Each of the wings has a...
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6886778 |
Efficient wing tip devices and methods for incorporating such devices into existing wing designs
Efficient wing tip devices for use with aircraft wings. In one embodiment, an aircraft wing/winglet combination includes a wing having a wing root portion and a wing tip portion spaced apart from...
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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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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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6464167 |
Vehicle with vertical wings and a stabilizing torque system of jets to use fluid energy for forward motion
Disclosed is a fluid vehicle having one or more vertical wings in contact with the fluid for generating a forward motion. This fluid vehicle also has a stabilizing torque system for generating jets...
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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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6116540 |
Aircraft vertical tail with shadowed base
In accordance with the present invention, there is provided a low observable aerodynamic control system for integrated use with an aircraft fuselage. The control system is provided with a shadow...
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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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6021977 |
Vertical stabilizer fin assembly for an aircraft
A vertical stabilizer fin and rudder assembly for use on an aircraft including a stabilizer fin with airfoil surfaces and a rudder with a forward margin pivotally mounted on the trailing edge of...
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5988563 |
Articulating winglets
The present invention is directed to a unique foldable winglet assembly adaptable for use with an aircraft for maximizing the wing span of the aircraft during cruise operation while reducing wing...
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5961068 |
Aerodynamic control effector
An aerodynamic control system for an aircraft comprises a pair of low-aspect-ratio strakes integral with the fuselage, each of the strakes being substantially co-planar with an associated one of...
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5810284 |
Aircraft
This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying...
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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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5738331 |
Aircraft crosswind control apparatus
The present invention relates to a control system for an aircraft to compensate for crosswinds on landings. In one embodiment, the control system includes two mutually identical control surfaces...
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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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5692709 |
Shock wave stabilization apparatus and method
An apparatus and method of stabilizing unstable shock waves on the surface of a body induce shock waves to form prematurely at a particular location on a surface of the body and fix that location...
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5653404 |
Disc-shaped submersible aircraft
An aircraft of disc-shaped configuration provides the capability of vertical take-off and landing; straight horizontal flight; and three-dimensional maneuverability in the air by means of a...
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5503352 |
Light-duty box-wing aeroplane
A light-duty multipurpose aeroplane has a fuselage having a cabin at its center, a tail portion with a pusher propeller in a ring and a front portion with an all-swiveling horizontal "canard" type...
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5449131 |
Vertical nose strake for aircraft stability and control
A pivotal strake located at the nose section of an aircraft forebody. The strake pivots about an axis that is essentially perpendicular to the surface of the nose section. Rotation of the strake...
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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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5150861 |
Variable sweep side force generator and roll control device
In an airborne vehicle utilizing tail fins to provide directional control by use of the sideslip maneuver, a variably positionable side force generator airfoil that is positioned in response to the...
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5100081 |
Aircraft control system
An aircraft having a wing with trailing edge control flaps and with upwardly extending winglets at the outer wind ends, the winglets being provided with rudder surfaces, the craft has the usual...
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5096143 |
Tail unit with rotatable tailplane
The tailplane 6 is mounted to an aircraft by a spigot 7 and is also rotatable about the spigot 7 to provide aerodynamic control. At the same time the tail plane is pivotable about an axis extending...
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5072894 |
Apparatus and method for increasing the angle of attack operating range of an aircraft
An apparatus and method for increasing the angle of attack operating range of an aircraft is disclosed. The invention comprises a pair of substantially vertical tip fins. Each vertical tip fin has...
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5069402 |
Alleviation of aircraft fuselage form drag
An aircraft having an upswept tail section fuselage includes a single pair of large vortex generators mounted in the vicinity of the break in the fuselage ahead of or at the beginning of the tail...
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5062585 |
Detached and attached thermal spoilers for kinetic energy projectile fins
A kinetic energy projectile intended to be launched toward a selected tar has a projectile body and a plurality of main fins attached to the projectile body to provide stability thereto in flight....
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4899954 |
Ground-air-water craft
A ground-air-water craft comprises a fuselage body with a passenger compartment mounted thereon, a box-type main wing connected to the fuselage and extending outwardly on both sides thereof, the...
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4786009 |
Yaw and pitch control of air vehicles at high angles of attack
Method and apparatus for controlling the yaw and pitch of air vehicles at high angles of attack by controlling the vortex pattern around the forebodies of the air vehicles by means of deflecting...
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4784353 |
Aircrafts tail section drag compensating for nose-down pitching moment
In an aircraft exhibiting an undesirable nose-down pitching moment due to a rearward shift of the wing lift acting aft of the characteristic pitch axis of the aircraft as speed increases in 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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4708305 |
Helicopter anti-torque system using fuselage strakes
A helicopter 10 with a system for controlling mainrotor torque which reduces the power and size requirements of conventional anti-torque means. The torque countering forces are generated by...
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4693435 |
High speed aircraft control surface
A high strength, lightweight, heat resistant control surface for a high speed aircraft such as a missile or the like, comprises a heat resistant lightweight composite such as a graphite reinforced...
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H000329 |
Aerodynamic housing
An aerodynamic housing is disclosed for stabilizing the free-fall descent an article, particularly a sonobuoy, launched from an aircraft. The housing is cylindrically-configured and includes a tail...
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4682746 |
Control force generator
A control force generator for an aircraft using circulation control to a selectively produce lift on an otherwise non-lift surface. The generator employs a novel, double-slot single Coanda surface...
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4605183 |
Swing wing glider
A glider comprising a pair of wings having overlapped forward, inner root portions that are freely pivotally connected and tailfins on rearward, outer portions of the wings. The tailfins are...
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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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4542866 |
Aircraft with directional controlling canards
A pair of canards (18, 20) are mounted to the fuselage (22) of an aircraft (10). Each canard is mounted to the fuselage by a hinge (44) for vertical swinging movement. Connected to the hinge (44)...
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