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Document |
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7331763 |
Turbine disk
A gas turbine section of a gas turbine engine, including a first stage turbine disk, a forward outer seal carried on the turbine disk and a forward shaft cooperating with the first stage turbine...
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6805534 |
Curved bucket aft shank walls for stress reduction
A turbine bucket comprising an airfoil portion and a shank portion with a substantially horizontal platform radially therebetween, the shank portion having a forward shank wall and an aft shank...
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6416275 |
Recessed impingement insert metering plate for gas turbine nozzles
An impingement insert sleeve is provided that is adapted to be disposed in a coolant cavity defined through a stator vane. The insert has a generally open inlet end and first and second...
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6231005 |
Device for the individual control of the rotor blades of the rotary wing structures of aircraft with multiple swashplates
The device for the individual control of the blades includes at least two sets of rotating swashplates centered on the rotor axis and non-rotating swashplates at least inclinable in all directions...
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6099254 |
Helicopter rotor blade control device
In a helicopter having three or more rotor blades, and with mechanical actuation of the rotor blades by a swash plate and a superimposed electrohydraulic active control system, in addition to three...
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5820345 |
Split rotor shaft driven lift fan
A split fan for providing lift for an aircraft is described. In one embodiment, a main engine shaft extends to the split fan, and a portion of the split fan is located at an elevation above the...
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5351913 |
Coaxial transmission/center hub subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors
One embodiment of a coaxial transmission/center hub subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors includes a single stage transmission, a transmission housing, and...
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5318248 |
Vertical lift aircraft
A vertical lift aircraft comprising an aircraft body and a lifting assembly is presented. The lifting assembly comprises a frame wherein at least one airfoil assembly which includes a plurality of...
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5011373 |
Individual pitch control device for blades of rotors of rotor craft by means of rotating linear jacks
An individual pitch control device for the blades (7) of a rotor of a rotor craft employing respective rotating linear jacks (29) for controlling the pitch of the rotor blades. The linear jacks are...
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4957413 |
Omnidirectional variable thrust propeller
An omnidirectional variable thrust propeller for a vehicle includes a hub, plurality of blades, and a plurality of shafts. Each shaft is coaxially rotatably connected to a respective blade and...
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4881874 |
Tail rotor
A helicopter tail rotor (10, 130) includes a drive mast (12) having an axis of rotation (14). A first blade pair (20) is mounted for rotation about the drive mast (12). The first blade pair (20)...
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4525123 |
Rotary wing aircraft
In a helicopter having a power shaft with a main axis and bearings for supporting an even number of blades for pivoting about their longitudinal axes, arms mounted on the respective blades for...
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4478379 |
Unmanned remotely piloted aircraft
An unmanned aircraft of the remotely piloted type that is characterized by its configuration and outline using rigid counter rotating propellers, positioned substantially at the height of its...
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4410806 |
Control system for a vertical axis windmill
A vertical axis windmill having a rotating structure is provided with a series of articulated vertical blades whose positions are controlled to maintain a constant RPM for the rotating structure,...
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4367063 |
Pitch control mechanism for coaxial helicopter steering
A directional and yaw control mechanism for coaxial helicopters, comprising a three coaxial ring system interconnected through a cam and link assembly for transmitting control signals from a...
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4362085 |
Flight control system
A flight control system is provided for a helicopter furnishing safety feres, and providing back up control in the event of failure of controls of the rotary head swashplate of a helicopter. The...
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4047838 |
Blade pitch control mechanism for helicopters
Pitch control linkage for the upper rotor of coaxial counterrotating rotors utilizes conventional swashplate, control rod and servomotor elements for changing blade pitch but without the...
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4027999 |
Analog mixer to vary helicopter rotor phase angle in flight
An analog mixer for a helicopter rotor control system mounted for tilting motion about a variable tilt axis and connected to the rotor control swashplate to cause synchronous tilting and including...
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3995793 |
Roto-wing jet airplane
A jet aircraft is equipped with powered helicopter type rotor blades and control mechanisms whereby it can take off and land vertically, yet in horizontal flight can operate at speeds and altitudes...
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3700389 |
SPRAYING BOOTH
A spraying booth for facilitating the recovery of the surplus of pulverulent material used to coat an object includes at the rear means for enabling it to communicate with an air extraction...
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3592559 |
VARIABLE GEOMETRY ROTOR SYSTEM
This rotor system is designed to control the nonuniform wake shed from a given rotor blade impinging upon the other blades of the rotor system. The rotor system utilizes blade sets which are of a...
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3574483 |
PITCH CONTROL MECHANISM FOR BLADED ROTOR
Two Z-crank mechanisms connect at different stations to a rotor swashplate so that translation of the mechanisms causes collective pitch variation of the blades and so that rotation of the...
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3570786 |
CONTROL APPARATUS AND METHOD FOR OPERATING AN AIRCRAFT
A control device and method for operating an aircraft having rigid lifting rotors in which the rotor blades can carry steady offset lift vectors. The blades of the rotors are adjustable cyclically...
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3482552 |
FAN ASSEMBLY OF THE VARIABLE AIR DELIVERY TYPE
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3357656 |
Turbine propulsion and drive for aircraft rotor means
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3207225 |
Coaxial, contrarotative aircraftlifting or/and -sustaining rotor systems
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3012614 |
Helicopter
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2983319 |
Harmonic anti-vibration means for a helicopter
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2980186 |
Rotor control system for helicopter
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2838123 |
Coaxial rotor helicopter
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2829721 |
Directional control system for rotary wing aircraft having contra-rotating load-carrying rotors
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