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7364114 |
Aircraft
The present invention concerns an aircraft having a plurality of lifting and thrust rotors, with an electric motor and an inverter for each motor. In order to provide an aircraft having a greater...
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7363120 |
Method of adjusting at least one defective rotor of a rotorcraft
The present invention relates to a method of adjusting at least one defective, main or anti-torque rotor of a particular rotorcraft. The method uses a neural network representing the relationships...
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7344106 |
Vertical take-off and landing aircraft
A vertical take-off and landing aircraft has an airframe body that defines a loop-shaped path of travel for a plurality of movably-mounted wings that are transversely disposed relative to a...
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7324016 |
Navigational indicating system for rotary wing aircraft
Red, green and white colored lights are emitted from navigation orientation indicating light emitting devices mounted within a helicopter rotor blade near its tip. The light emissions from such...
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7296767 |
Variable speed transmission for a rotary wing aircraft
A transmission gearbox for a rotary-wing aircraft includes a main gearbox and a variable speed gearbox in meshing engagement with the main rotor gearbox. The variable speed gearbox permits at least...
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7284726 |
Self extinguishing composite primary structure
A helicopter with one or more components formed from a self extinguishing composite primary structure material to provide increased passenger safety. The self extinguishing composite primary...
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7278606 |
Helicopter having a fusilage section and a tail section coupled thereto
A helicopter having: a flow control device provided at one of a lower portion of a side surface of a fuselage and a portion on a lower surface of the fuselage near the side surface and extending...
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7275711 |
Gas-powered tip-jet-driven compound VTOL aircraft
A compound Vertical TakeOff and Landing (VTOL) aircraft. In a specific embodiment, the VTOL aircraft includes a gas-powered tip-jet driven rotary-wing and a fixed-wing that is capable of providing...
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7273195 |
Vertical lift craft
A vertical lift craft includes a vertical lift craft, a powered rotor system including two counter-rotating lift rotors rotatably mounted to the body and a cage fixed to the body and extending...
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7264199 |
Unloaded lift offset rotor system for a helicopter
A rotor system ( 12 ) for a helicopter ( 10 ) includes a rotating shaft ( 82 ). A gimbaled hub assembly ( 56 ) is coupled to the rotating shaft ( 82 ). Rotating blades ( 24 ) and non-rotating...
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7231997 |
Hybrid drive powered lift platform
An air-based thrust recovery system for use in a powered lift platform utilizing fixed-pitch propellers is provided. The system utilizes an air compressor coupled to the drive motor of the platform...
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7207519 |
Blade restraint system
A blade restraint system for restraining a blade of a helicopter comprising a blade clamp releasably mounted to the blade and a pole pair releasably mountable to the blade clamp at a clamp end. The...
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7204453 |
Rotor and aircraft passively stable in hover
The present invention discloses a rotor that enables an aircraft to be passively stable in hover. The rotor, having a generally fixed geometry is tiltably connected to its rotor shaft. The outer...
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7198224 |
Energy absorbing airframe for a vertical lift vehicle
An airframe includes an energy absorbing structure with a frame, a beam mounted to the frame at a rotational joint and a collapsible member. In response to reaching a predetermined threshold load...
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7198223 |
Ultralight coaxial rotor aircraft
An ultralight coaxial dual rotor helicopter having a substantially L shaped frame. Attached to the back of the frame is a vertical shaft engine, and a pair of yaw paddles for controlling yaw of the...
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7195198 |
Helicopter blade emergency detachment system
A method and system for a helicopter blade emergency detachment system that has an activator in the cockpit to initiate the system, an ignition train to provide the detonation signal, a transfer...
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7182325 |
Compliant spacer
A compliant spacer which, in use, is located between planar surfaces of two machine elements which are, in use, clamped together in an assembly, the spacer having a first generally planar face and...
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7178758 |
Propellers and propeller related vehicles
A propeller related vehicle in accordance with one embodiment of the present invention is described as a helicopter having an airframe housing a motor mechanism for powering a main propeller...
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7178757 |
Motorcycle rider autogyro
An autogyro, or aircraft with a rotating wing, has an airframe providing a motorcycle-like configuration for the rider. The motorcycle-like straddle-type seat locates the rider in front of the...
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7134627 |
Device for lashing down rotorcraft blades
The present invention relates to a device for lashing down a rotorcraft wing, said wing being provided with at least first and second adjacent blades P and P′, the ends of said blades being...
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7131610 |
Portable aircraft hangar
Disclosed is a portable aircraft hangar assembly for use with aircraft having a series of rotor blades. The assembly is specifically designed to support a canopy over the series of rotor blades....
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7104862 |
Reduced visibility rotorcraft and method of controlling flight of reduced visibility rotorcraft
A rotary aircraft (rotorcraft) in which the entire aircraft rotates about its center of mass as it flies, and in which the center of mass is located external to the aircraft in the generally...
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7101246 |
Reduced visibility rotorcraft and method of controlling flight of reduced visibility rotorcraft
A rotary aircraft (rotorcraft) in which the entire aircraft rotates about its center of mass as it flies, and in which the center of mass is located external to the aircraft in the generally...
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7093788 |
Rotating flying wing aircraft and control system
A rotating wing aircraft has a rotating fuselage and wings. The aircraft is configured to rotate with the air passing over the wings because of the rotation providing the lift needed to keep the...
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7068210 |
Low-cost position-adaptive UAV radar design with state-of-the-art cots technology
A position-adaptive radar method and device for small UAV platforms capable of detecting “leakage signals” that, for example, propagate between two buildings or “leak through” penetrable...
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7063289 |
Helicopter tail section
A vertical stabilizer ( 38 ) is supported by and projects upwardly and rearwardly from the tail portion ( 14 ) of a helicopter fuselage ( 12 ). A tail rotor (TSR) is mounted on the vertical...
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7059931 |
Reduced visibility rotorcraft and method of controlling flight of reduced visibility rotorcraft
A rotary aircraft (rotorcraft) in which the entire aircraft rotates about its center of mass as it flies, and in which the center of mass is located external to the aircraft in the generally...
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6959894 |
Impact resistant structure for the helicopter and energy absorber used for the same
An impact resistant structure of a helicopter having an energy absorber positioned under a floor of the helicopter and directly connected to a cabin frame of the helicopter. The energy absorber is...
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6929215 |
Rotor system for helicopters
A tail rotor system for a helicopter includes a gear box housing retainer ( 66 ) coupled to the tail boom ( 16 ) of the helicopter. The tail rotor system also includes a power-limiting device ( 50...
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6883752 |
Vibration damper for aircraft engine
An internal combustion engine for an aircraft is described. The internal combustion engine includes a crankshaft defining first and second ends, a propeller, and a transmission disposed between the...
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6880781 |
Helicopter electric connecting unit, and helicopter equipped with such a connecting unit
There is described an electric connecting unit for a helicopter, having a stator connected rigidly to a fixed part of the helicopter and fitted with first electric contact means; and a movable...
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6869045 |
Helicopter tail section and retrofit method
A vertical stabilizer ( 38 ) is supported by and projects upwardly and rearwardly from the tail portion ( 14 ) of a helicopter fuselage ( 12 ). A tail rotor (TSR) is mounted on the vertical...
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6863239 |
Fluid conduit for use with hydraulic actuator
A fluid conduit is provided for use in a hydraulic actuating system for controlling an instrumentality disposed on a rotating portion of a machine. The fluid conduit transports pressurized fluid...
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6860450 |
Apparatus and method for folding helicopter rotor blades for storage and transport of helicopter
A method comprises providing six helicopters. Each helicopter has a fuselage, a main rotor assembly extending out from the fuselage and rotatable about a main rotor axis, and four main rotor blades...
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6845942 |
Omni-directional air vehicle personal transportation system
An omni-directional air vehicle having a pod with a connected turbofan system, the pod has a body that contains a power source for generating electrical power and a ducted fan with spherical...
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6830214 |
Rotary-wing aircraft
A preferred embodiment of a rotary-wing aircraft includes a fuselage, a tail boom fixedly coupled the fuselage, a pylon fixedly coupled to the tail boom, and a main rotor assembly rotatably coupled...
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6824093 |
Method of controlling pitch on a gyroplane and a gyroplane
A method of controlling pitch on a gyroplane. A first step involves pivotally securing a wing to a mast supporting a rotor of the gyroplane. A second step involves providing a linkage between 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...
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6769644 |
Tail boom saddle for maintaining helicoptor main rotor blades in a stowed configuration for helicopter stowage and transport
A tail boom saddle for use with a helicopter. The helicopter has a fuselage, a main rotor assembly extending out from a forward section of the fuselage, and a plurality of main rotor blades...
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6766980 |
Prop wash deflector
A structure for increasing the cargo carrying capacity of a helicopter when the cargo is suspended below the helicopter chassis is described. The structure includes a depending skirt surrounding...
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6758436 |
Pneumatic driven propeller related vehicles
A propeller related vehicle in accordance with one embodiment of the present invention is described as a helicopter having an airframe housing a pneumatic motor mechanism for powering a main...
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6755374 |
Anti-Torque and yaw-control system for a rotary-wing aircraft
A preferred embodiment of a rotary-wing aircraft comprises a main rotor, a tail boom extending through an area of downwash from the main rotor, and a linear nozzle fixedly coupled to the tail boom...
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6737987 |
Method, apparatus and computer program product for helicopter tail strike warning
A method, apparatus and computer program product for alerting the pilot of a helicopter of a possible tail strike hazard.
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6732973 |
Stabilizer for a propeller related vehicle
A stabilizer attached between a propeller and a shaft; and the propeller is pivotally mounted to the shaft in a substantially perpendicular plane to the shaft. The stabilizer has a tendency to...
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6729576 |
Composite tail cone assembly
The present invention broadly relates to a tail cone assembly for a helicopter. The tail cone assembly includes a monocoque shell formed from a composite material. The composite material preferably...
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6712313 |
Constant velocity drive rotary-wing aircraft rotor with torque splitting differential
A constant velocity drive mechanism of a rotary-wing aircraft rotor, comprises a torque splitting differential mechanism, comprising a driving disc integral in rotation with a rotor mast and...
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6708921 |
Composite flapping flexure
A composite flapping flexure is disclosed in which load carrying belts are located on the upper and lower surfaces of the flexure, and minor load carrying off-axis layers are located at the...
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6705905 |
Sea-land-sky craft
A sea-land-sky craft capable of navigating on the water, running on the land and flying in the air (that is, climbing vertically, flying horizontally and hovering in the air) usable in a new...
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6695254 |
Rotary-wing aircraft rotor with constant velocity drive
A tilting rotor of a convertible aircraft comprises, between the mast and the hub, a constant velocity drive mechanism and pivoting arrangement comprising two gimbals, each of which is driven by...
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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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