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8181901 |
Fast hybrid helicopter with long range and proportional drive to the rotor and the propeller
A hybrid helicopter (1) includes firstly an airframe provided with a fuselage (2) and a lift-producing surface (3), together with stabilizer surfaces (30, 35, 40), and secondly with a drive system...
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8170728 |
Rotorcraft control system
A system (100) for controlling a rotorcraft (1) including a rotor (10), at least one variable-pitch propulsion propeller (6L, 6R), and a motor (5) for driving the rotor and the propeller(s), the...
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8113460 |
Fast hybrid helicopter with long range and an optimized lift rotor
A hybrid helicopter (1) includes firstly an airframe provided with a fuselage (2) and a lift-producing surface (3), together with stabilizer surfaces (30, 35, 40), and secondly with a drive system...
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8070089 |
Hybrid helicopter that is fast and has long range
A hybrid helicopter (1) includes a central fuselage (2) defining a front end (3) and a rear end (4), the hybrid helicopter (1) having a main lift rotor (10), an additional lift surface (20), a...
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8070090 |
Stop-rotor rotary wing aircraft
Systems and methods for transitioning an aircraft between helicopter and fixed wing flight modes are provided. In one embodiment, an aircraft comprises a plurality of wings each having a spar and a...
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8056866 |
Air-vehicle augmented kinesthetic control system
An augmented kinesthetic control system for use with a lift platform, the lift platform comprising first and second longitudinally-spaced thrust generating means, is provided. The first and second...
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8052094 |
Fast hybrid helicopter with long range with longitudinal trim control
A hybrid helicopter includes an airframe provided with a fuselage and a lift-producing surface together with stabilizer surfaces and a drive system including: a mechanical interconnection system...
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7871032 |
Helicopter
A helicopter that adopts a two-stroke internal combustion engine equipped with a centrifugal force-resistant propeller fan or fan turbine, or that can rotate clockwise (CW) and counterclockwise...
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7857252 |
Rotor/wing dual mode hub fairing system
A hub fairing system (12) for a stopped-rotor aircraft (10) having a fuselage (14) including a hub (16). The hub (16) is mechanically coupled to the fuselage (14) and to multiple blades (40) and is...
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7789341 |
Rotary wing aircraft having a non-rotating structural backbone and a rotor blade pitch controller
A rotary wing vehicle includes a body structure having an elongated tubular backbone or core, and a counter-rotating coaxial rotor system having rotors with each rotor having a separate motor to...
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7766274 |
Active maple seed flyer
An unmanned aerial vehicle (UAV) has a payload or body affixed at one end of an elongated airfoil. The entire airfoil/payload combination rotates about a center of mass to define a rotor disk....
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7661624 |
Aerodynamic lifting-thrusting propulsion device
An aerodynamic lifting-thrusting propulsion device has a frame with an axis, relative to which the frame is arranged with a possibility of rotation, a cardan joint having a cross, at least two...
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7600711 |
Flexible ducting system including an articulable sealed joint
Aircraft including a powerplant mounted on an airframe and a rotor/wing rotatably mounted on the airframe. The rotor/wing has multiple blades extending outward from roots adjacent the airframe to...
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7546975 |
Tandem rotor wing rotational position control system
A rotational position-adjusting system (6) for a vertical takeoff and landing aircraft (4). The system (6) includes multiple detectors (60) that generate rotor signals. The rotor signals are...
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7448571 |
Rotor collective pitch VS Mu to control flapping and mast/rotor tilt to control rotor RPM
A method of operating a rotor aircraft involves measuring an airspeed of the aircraft and a rotational speed of the rotor. A controller determines a Mu of the rotor based on the airspeed of the...
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7438259 |
Compound aircraft control system and method
The Invention is a control system for a compound aircraft. A compound aircraft has features of both a helicopter and a fixed wing aircraft and provides redundant control options. The control system...
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7412825 |
Flow path splitter duct
A flow path splitter duct is provided. The flow path splitter duct includes a main hub, a first outlet hub and a second outlet hub. The main hub has a plurality of inlet ports each being separated...
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7147182 |
Gas-powered tip-jet-driven tilt-rotor compound VTOL aircraft
A tilt-rotor compound VTOL aircraft has a multiple-flow thrust generator(s) comprising a gas-powered tip-jet driven rotor(s) having a thrust-augmentation ratio of at least two; that tilts about the...
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7143973 |
Avia tilting-rotor convertiplane
The present invention provides a tilt rotor aircraft having a centrally mounted tiltable engine and rotor assembly. A turbine or other type of engine (or engines) is pivotally mounted on a central...
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7137589 |
Compound helicopter with combined wings and landing struts
The invention is a helicopter that includes a fuselage with a longitudinal axis, a main rotor and tail rotor; and right and left wings mounted to said fuselage. The right and left wings having at...
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7036768 |
Multi-purpose airship
A multi-purpose airship usable for multi-purposes with less maintenance cost is provided. The multi-purpose airship comprises an operator cabin (1) to which a work device of agricultural chemical...
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7014142 |
Low-drag rotor/wing flap
Rotor/wing aircraft having a low-drag flap are disclosed. In one embodiment, a rotor/wing aircraft includes an elongated blade having a body portion and a flap portion. The body portion has first...
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6974105 |
High performance VTOL convertiplanes
A single-tilt-rotor VTOL airplanes have a tiltable rotor attached to an elongated power pod containing the collective and cyclical pitch mechanism, and transmission. The power pod is pivotably...
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6885917 |
Enhanced flight control systems and methods for a jet powered tri-mode aircraft
A method of stabilizing a jet-powered tri-mode aircraft as the aircraft travels in a helicopter mode, a compound mode, and a fixed-wing mode is disclosed. The method includes receiving a plurality...
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6873887 |
Rotor torque anticipator
A system for performing feed-forward anticipation of rotor torque demand on a helicopter engine is disclosed which includes a flight control computer adapted and configured to predict the total...
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6860449 |
Hybrid flying wing
An aircraft has a flying wing and two wingtip hulls installed on the wingtips of the flying wing. Both of the wingtip hulls contain lighter-than-air gas to generate static lift. These wingtip hulls...
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6824094 |
Power assembly for ornicopter
An ornithopter has a power assembly which provides flapping of the wings by a reciprocating shaft and bell cranks. The wings are mounted on a hub which rotates in response to the flapping of the...
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6789764 |
Dual-flight mode tandem rotor wing
A vertical takeoff and landing aircraft (10) is provided including an aircraft fuselage (12). A plurality of hubs (20) are mechanically coupled to the fuselage (12) and are rotated by at least one...
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6695253 |
Method and apparatus for folding/unfolding the blades of a rotary-wing aircraft rotor
To fold/unfold blades of a rotor, at least one variable-length linear actuator is removably attached to two blades locked in the flight position. A first blade is unlocked, and the actuator is...
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6672538 |
Transmission for a coaxial counter rotating rotor system
A transmission system for a hybrid aircraft is driven by a plurality of driveshafts and drives a translational propulsion system. Each driveshaft is mounted to a pinion gear which mesh with an...
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6578793 |
Method and apparatus for fiber strap termination
A variable diameter rotor blade assembly includes a rotor hub with multiple rotor blades each having an outboard blade section telescopically mounted to an inboard blade section. A reeling assembly...
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6565038 |
Supersonic propellers for aircrafts
The present invention provides one pair or two pairs of horizontal propellers incorporated on the two opposite sides of an aircraft, which propellers by their rotating external blades create...
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6513752 |
Hovering gyro aircraft
A fixed wing rotorcraft uses differential thrust between wing mounted propellers to provide counter torque when the rotor is being powered by a power source. The rotorcraft is comprised of a...
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6467726 |
Aircraft and torque transmission
An aircraft including an airframe having a fuselage which extends longitudinally, and having fixed wings including a main wing, a horizontal tail wing and a vertical tail wing. A propeller-rotor...
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6450446 |
Counter rotating circular wing for aircraft
The present invention herein is a disc shaped wing comprised two disc segments, an inner disc assembly and an outer disc assembly, that counter-rotate to enable vertical take off and landing. The...
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6398159 |
Arial disk
An aircraft comprising a body and a plurality of disks rotatably coupled to the body. The disks may be configured to (i) rotate in the same or different directions, (ii) rotate at similar and/or...
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6382556 |
VTOL airplane with only one tiltable prop-rotor
A VTOL-capable tilt-rotor airplane having a single tiltable large-diameter prop-rotor attached to an elongated power pod containing the collective and cyclical pitch mechanism, transmission, and...
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6340133 |
System to transform a horizontal take-off and self-sustained horizontal flight airplane into self-sustained horizontal flight, vertical landing and take-off, hybrid integrated airplane
The present invention relates to a system for the transformation of a traditional self-sustained horizontal take-off and landing aircraft into hybrid, integrated, self-sustained vertical take-off...
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6311106 |
Automatic flat rate setting system for freight feeder aircraft and method of setting of engine flat rate
A system and method of automatically setting a flat rate engine power setting of an aircraft determines the weight of loaded cargo containers to determine the total gross weight of the aircraft...
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6234422 |
Uniblade air rotor and flight and covercraft vehicles with its
The invention is related to air flight vehicles, such as vertical take-off and landing (VTOL) airplanes, helicopters and covercraft.The goal of this invention is to create an air rotor designed so...
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6170778 |
Method of reducing a nose-up pitching moment on a ducted unmanned aerial vehicle
A method for reducing a nose-up pitching moment in an unmanned aerial vehicle during forward flight. The unmanned aerial vehicle includes counter-rotating rotor assemblies that are mounted within a...
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6047924 |
Method of folding the blades of a main rotor of a rotary-wing aircraft, and apparatus for implementing the method
Once the rotor of a rotary-wing aircraft is held stationary in an indicated position, the method comprises steps consisting in placing the collective pitch control stick in a first predefined...
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5984635 |
Keller pressure jet rotor system
A helicopter aircraft with an upper hollow center circular plenum in gaseous communication with a plurality of hollow hinged attached rotor blades. Below the plenum and in gaseous communication...
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5868351 |
Rotor blade stowing system
Rotor blade stowing system for stowing rotor blades that conserves storage space without adding significant weight or cost to the aircraft. The system includes a rotary actuator disposed on a blade...
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5839690 |
Inertial acceleration aircraft
An aircraft structured particularly, as a whole to improve its capacity for accelerating by the means of transforming stored motion of mass into translocational motion of the aircraft; the aircraft...
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5454530 |
Canard rotor/wing
A dual-mode high speed rotorcraft is disclosed which combines the efficiency of a helicopter with the high-speed capability of a fixed wing aircraft. The rotorcraft includes a rotor for propulsion...
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5240204 |
Lift generating method and apparatus for aircraft
A lift generating method and apparatus for aircraft is provided which generates lift in forward flight, in vertical flight or while hovering. A disk (24) is positioned between first and second...
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5190242 |
Model jet helicopter with solid-circular rotor blade
An elongate helicopter body including an orthogonally mounted rotatable and pivotally positionable rotor shaft fixedly mounting a solid, annular, convex blade member defined by a parabolic convex...
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5174523 |
Compound helicopter with engine shaft power output control
A compound helicopter includes a main sustaining rotor for hover and low speed flight, a propeller for providing propulsion in high speed flight and an engine. Engine output power is controlled so...
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5085315 |
Wide-range blade pitch control for a folding rotor
A blade pitch control system for a rotary wing aircraft which incorporates a mast and rotor which is pivotally adapted for movement of the mast between a generally horizontal stored position and a...
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