| Patents for B64C 11 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (3,644) |
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| 03/12/2009 | WO2009032195A1 Self-tooling composite structure |
| 03/11/2009 | EP2032435A2 Adjusting apparatus for adjusting the pitch angle of propeller blades, variable-pitch propeller, control function which can be implemented in a computer, and method for adjusting the pitch angle of propeller blades |
| 03/05/2009 | WO2008147402A3 Helicopter blade mandrel |
| 03/05/2009 | US20090060743 Expandable impeller pump |
| 03/05/2009 | US20090060742 Rotor Head for a Twin-Rotor Helicopter |
| 03/05/2009 | US20090057489 Component with a damping filler |
| 03/05/2009 | US20090057488 Component with a damping filler |
| 03/04/2009 | CN101376433A Helicopter rotor operation method and system |
| 02/25/2009 | EP2028102A1 Shpadi propeller (variants) and the involute of the blades thereof |
| 02/25/2009 | EP2028099A1 Propulsion system with a controllable pitch propeller |
| 02/24/2009 | US7494397 Helicopter |
| 02/24/2009 | US7494320 Rotor for passively stable helicopter |
| 02/19/2009 | US20090047132 Durable blade |
| 02/11/2009 | EP2022943A1 Airfoil and method for protecting airfoil leading edge |
| 02/11/2009 | EP2022942A1 Airfoil and method for protecting airfoil leading edge |
| 02/11/2009 | CN101362510A Thrust vectoring shroud for fluid dynamic device |
| 02/05/2009 | US20090035142 Quick assembly blade for a ceiling fan |
| 02/05/2009 | DE102007028257A1 Device for adjusting angle of incidence of sheets of rotor, has drive carried by standing hydraulic cylinder, which is concentrically arranged at rotation axis of rotor |
| 01/29/2009 | WO2009013323A2 Aerodynamic profile, actuator for use therein and test model provided therewith |
| 01/29/2009 | US20090028714 Method of designing tool and tool path for forming a rotor blade including an airfoil portion |
| 01/29/2009 | US20090026310 Variable pitch anti torque coaxial counter rotation bi-prop rotor |
| 01/29/2009 | DE112006003554T5 Reduktion des tonalen Lärms bei Lüfterkühlern durch Benutzung von Verteilerblättern Reduction of tonal noise at fan coolers through the use of distribution leaves |
| 01/27/2009 | CA2405497C A single or multi-bladed rotor |
| 01/22/2009 | WO2009011609A1 Idling rotor |
| 01/22/2009 | WO2009010618A1 Method for manufacture of wind vanes |
| 01/22/2009 | US20090022592 Clamped plate seal |
| 01/22/2009 | CA2694049A1 Method for the manufacture of wind vanes |
| 01/20/2009 | US7478995 Device for locking a structure for securing a blade to the hub of a rotorcraft rotor |
| 01/15/2009 | US20090016889 Locking Sub-Assembly for Closing The Remaining Gap Between The First and The Last blade of a Blade Ring Which Are Inserted in a Circumferential Groove of a Turbomachine, and Corresponding Turbomachine |
| 01/14/2009 | CN101342943A Method for acquiring fluid differential pressure propelling force and blades thereof |
| 01/13/2009 | CA2443940C Cylindrical wing tip with helical slot |
| 01/08/2009 | US20090010764 Blade provided with a horizontally-wound spar, and a method of fabricating such a spar |
| 01/07/2009 | CN101337581A Blade equipped with a spar with horizontal coil and method for manufacturing such a spar |
| 01/06/2009 | CA2316094C Fan-based propulsion and pressure flow system |
| 01/02/2009 | DE10212036B4 Verfahren zur Geräuschreduktion für mehrmotorige Propellerflugzeuge A method of noise reduction for multi-engine propeller aircraft |
| 01/01/2009 | US20090004008 Blade mounting |
| 12/31/2008 | EP2009246A2 A blade mounting |
| 12/30/2008 | CA2512550C Cooling fan with reinforced blade |
| 12/24/2008 | DE202008012643U1 Rotor für Luftfahrzeuge Rotor aircraft |
| 12/24/2008 | DE102007028143A1 Functional element adjusting and building method for vehicle, involves reducing flow pressures within flow areas with flow rates in closest cross section of nozzle, and utilizing difference of pressure in actuator for producing force |
| 12/24/2008 | DE102007028142A1 Variable-pitch propeller has one or multiple propeller blades mounted at propeller hub around radial displacement axis in adjustable manner and propeller blades are connected with propeller hub by connecting element |
| 12/24/2008 | DE102007028140A1 Propeller has one or multiple propeller blades arranged on propeller hub and each propeller blade is prestressed radially inwards by spring unit |
| 12/23/2008 | US7467984 Helicopter |
| 12/18/2008 | WO2008127362A3 Aircraft with transient-discriminating propeller balancing system |
| 12/17/2008 | EP2003055A2 Blade pitch actuation mechanism |
| 12/17/2008 | EP2003054A1 Device for supplying electricity |
| 12/17/2008 | CN101326101A Reduction of tonal noise in cooling fans using splitter blades |
| 12/11/2008 | US20080304972 Rotary body for turbo machinery with mistuned blades |
| 12/11/2008 | US20080304967 Actuation system, helicopter using the same, and controlling method therefor |
| 12/11/2008 | US20080304966 Concealed rotary fan |
| 12/11/2008 | DE102007025556A1 Verfahren zur Herstellung von Bauelementen aus Faser verstärkten Kunststoffen A process for the production of components made of fiber-reinforced plastics |
| 12/10/2008 | EP2000404A2 Propeller blade retention system with tapered roller bearing cartridge assemblies |
| 12/10/2008 | EP2000403A2 Airship and propulsion unit therefor |
| 12/10/2008 | CN101318552A Hydraulic dispenser equipped with a device for detecting seizures |
| 12/09/2008 | US7461819 Method for using a steerable tall fin to reduce the vibration generated on the fuselage of a helicopter |
| 12/04/2008 | WO2008147451A2 Translational thrust system for a rotary wing aircraft |
| 12/04/2008 | WO2008147376A1 Shaped rotor blade for reduced loads and vibration |
| 12/04/2008 | WO2008002338A3 Rotary fluid dynamic utility structure |
| 12/04/2008 | CA2673975A1 Helicopter blade mandrel |
| 12/03/2008 | EP1996460A2 Rotary fluid dynamic utility structure |
| 11/27/2008 | WO2008142498A1 Variable-diameter rotor with centrifugal forces compensation mechanism |
| 11/27/2008 | WO2008118637A3 Governor for a rotor with a variable maximum collective pitch |
| 11/27/2008 | US20080294305 Rotorcraft control system |
| 11/27/2008 | US20080290215 Hollow aerofoil and a method of manufacturing a hollow aerofoil |
| 11/26/2008 | CN100436254C Propeller |
| 11/25/2008 | CA2634430A1 Device for the adjustment of the pitch of a rotor blade of a wind turbine |
| 11/25/2008 | CA2634428A1 Device for the adjustment of the pitch of a rotor blade of a wind turbine |
| 11/18/2008 | US7452188 Pre-stretched tie-bolt for use in a gas turbine engine and method |
| 11/18/2008 | US7451949 Method for using a tiltable stabilizer to reduce vibration generated on the fuselage of a helicopter |
| 11/13/2008 | WO2008079553B1 Oscillating windmill |
| 11/13/2008 | US20080279689 Propeller Blade Bearing, Especially for Propeller Blades of Aircraft Propellers that Can be Adjusted Along Their Longitudinal Axis |
| 11/05/2008 | CN100430293C Shock absorber for pitch-adjustable propeller with feathering blades, particularly for sailers |
| 11/04/2008 | US7445434 Coating material for thermal barrier coating having excellent corrosion resistance and heat resistance and method of producing the same |
| 10/30/2008 | WO2008048245A3 Automatic dual rotor speed control for helicopters |
| 10/29/2008 | CN201140796Y Split type coarse pitch four-leaf conical screw propeller |
| 10/23/2008 | WO2008127362A2 Aircraft with transient-discriminating propeller balancing system |
| 10/09/2008 | WO2008096124A3 Method of operating a counter-rotating propeller engine for noise reduction and such an engine |
| 10/02/2008 | WO2008118637A2 Governor for a rotor with a variable maximum collective pitch |
| 10/02/2008 | US20080240923 Rotor blade for a wind turbine having a variable dimension |
| 10/02/2008 | US20080237395 Bvi noise reduction method and apparatus for helicopter |
| 10/02/2008 | CA2681547A1 Governor for a rotor with a variable maximum collective pitch |
| 10/01/2008 | CN101275584A Ring amplitude combined type screw propeller |
| 09/25/2008 | US20080232973 Propeller blade |
| 09/25/2008 | US20080232966 Detachable blade assembly for horizontal-axis wind turbine |
| 09/18/2008 | WO2008079553A3 Oscillating windmill |
| 09/17/2008 | CN101264796A Profile deformation using the example of a rotor blade |
| 09/16/2008 | US7425168 Toy helicopter |
| 09/16/2008 | US7425167 Toy helicopter |
| 09/11/2008 | US20080219848 Propeller |
| 09/10/2008 | EP1824732B1 Propeller blade bearing, especially for propeller blades of aircraft propellers that can be adjusted along their longitudinal axis |
| 09/10/2008 | CN101263277A Wind turbine blade |
| 09/09/2008 | US7422505 Toy helicopter |
| 09/09/2008 | US7422419 Propeller blade retention system |
| 09/04/2008 | WO2008105704A2 A mathematical minimal surface propeller |
| 09/03/2008 | EP1963682A2 Propeller |
| 09/02/2008 | US7419357 Ram air turbine blade disengagement mechanism for over-speed prevention |
| 08/28/2008 | US20080206064 Rotorcraft blade provided with a radial segment and with at least one forwardly-and/or rearwardly-swept segment |
| 08/28/2008 | US20080206063 Method and apparatus for assembling blade shims |
| 08/20/2008 | CN101244762A Power-driven system of aerial vehicle |
| 08/19/2008 | US7413408 Vibration-reducing and noise-reducing spoiler for helicopter rotors, aircraft wings, propellers, and turbine blades |