| Patents for B64C 11 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (3,644) |
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| 10/07/2009 | EP1500588B1 Method for producing a lift and a horizontal thrust |
| 10/07/2009 | CN101553399A Propeller blade retention |
| 10/07/2009 | CN100547248C Axial flow fan |
| 10/01/2009 | US20090242119 Connection between composites with non-compatible properties and method for preparation |
| 09/29/2009 | US7594625 Proprotor blade with leading edge slot |
| 09/24/2009 | WO2009115593A1 Contra-rotating propeller system with device for feathering propeller blades |
| 09/24/2009 | CA2718619A1 Contra-rotating propeller system with device for feathering propeller blades |
| 09/22/2009 | CA2436664C Aircraft gas turbine engine with tandem non-interdigitated counter rotating low pressure turbines |
| 09/22/2009 | CA2364647C Method for the control of aero gas turbine engines |
| 09/17/2009 | WO2009111956A1 An axial flow fan for decreasing the noise and the energy consumption |
| 09/10/2009 | US20090226316 Variable pitch rotor blade with double flexible retention elements |
| 09/10/2009 | US20090224098 Compact stowage of transport aircraft |
| 09/09/2009 | EP2097967A1 Motor with torque-balancing means including rotating stator and rotating rotor |
| 09/08/2009 | US7585154 Centrifugal fan and impeller thereof |
| 09/06/2009 | CA2658032A1 Damping device and aerodyne rotor system incorporating the same |
| 09/03/2009 | WO2009108885A2 Single-piece propeller and method of making |
| 09/03/2009 | US20090220347 Single-Piece Propeller And Method Of Making |
| 09/03/2009 | US20090220342 Shaftless vertical axis wind turbine |
| 09/02/2009 | EP2096029A2 Nose cone assembly and gas turbine engine comprising such an assemby |
| 09/01/2009 | US7581929 Rotational airfoil balance system |
| 09/01/2009 | US7581381 Ducted air power plant |
| 08/25/2009 | US7578059 Method for manufacturing constituents of a hollow blade by rolling |
| 08/20/2009 | WO2009102227A2 The direction acceleration principle, the direction acceleration devices and the direction acceleration devices systems |
| 08/19/2009 | EP2089274A2 Step-over blade-pitch control system |
| 08/19/2009 | EP2089273A1 Aircraft with rear annular tail |
| 08/18/2009 | CA2446714C Aerofoil with gas discharge |
| 08/13/2009 | WO2009097846A2 Thrust and carrying force generator |
| 08/13/2009 | US20090202357 Cooled pusher propeller system |
| 08/13/2009 | DE102008006437A1 Aerodynamisches Hochleistungsprofil für Luftfahrzeuge The aerodynamic high-performance profile for aircraft |
| 08/05/2009 | CN100522740C Propeller blade bearing |
| 08/04/2009 | US7568888 Fan blades having variable pitch compliantly responsive to a linear actuator |
| 07/30/2009 | WO2009094602A1 Multi-axis wind turbine with power concentrator sail |
| 07/30/2009 | WO2009093937A1 Device for changing a pitch of a blade of an impeller/propeller and a fan comprising the device |
| 07/30/2009 | US20090189325 Helicopter blade mandrel with roller assembly |
| 07/29/2009 | CN101495368A Automatic dual rotor speed control for helicopters |
| 07/29/2009 | CN101492091A Screw propeller variable-torque controller suitable for unmanned aerial vehicle |
| 07/23/2009 | WO2009091782A1 Check valve turbine |
| 07/23/2009 | US20090184203 Cooling channel formed in a wall |
| 07/23/2009 | US20090184195 Hydrazine Monopropellant Decomposition Air Turboprop Engine |
| 07/22/2009 | EP2079634A1 Propeller blade retention |
| 07/16/2009 | US20090180883 Hydraulically controlled variable pitch propeller |
| 07/16/2009 | US20090180876 Electrohydraulic propeller governor |
| 07/15/2009 | EP1485290B1 Permanent magnet alternator for a gas turbine engine |
| 07/14/2009 | US7559744 Propeller fan for heat exchanger of in-vehicle air conditioner |
| 07/09/2009 | WO2009083987A1 Fan and propeller performance enhancements using outsized gurney flaps |
| 07/08/2009 | CN101479151A 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 pr |
| 07/02/2009 | WO2009082581A2 Main rotor blade with integral tip section |
| 07/02/2009 | WO2009082396A1 Locknut assembly for a coaxial shaft |
| 07/02/2009 | US20090169383 Rotor balance device and method |
| 07/01/2009 | EP2074025A2 Aircraft with transient-discriminating propeller balancing system |
| 07/01/2009 | CN101472795A Rotary fluid dynamic utility structure |
| 06/25/2009 | WO2009079162A2 Main rotor blade with integral tip section |
| 06/25/2009 | WO2009079161A2 Main rotor blade with integral tip section |
| 06/25/2009 | WO2009078871A1 Rotor blade and method of making same |
| 06/25/2009 | US20090162200 Rotor blades |
| 06/25/2009 | US20090159754 Rotary wing system with ion field flow control |
| 06/25/2009 | CA2708269A1 Rotor blade and method of making same |
| 06/24/2009 | CN100504036C Cooling fan with reinforced blade |
| 06/23/2009 | CA2434949C Method and apparatus for modulating airfoil lift |
| 06/18/2009 | WO2009074669A1 Acoustically attenuated fuselage for aircraft |
| 06/18/2009 | CA2709235A1 Acoustically attenuated fuselage for aircraft |
| 06/11/2009 | WO2009073191A1 Wind turbine rotor assembly |
| 06/11/2009 | WO2008144228A3 Engine anticipation for rotary wing aircraft |
| 06/10/2009 | EP2066558A2 Marine propulsion and constructional details thereof |
| 06/10/2009 | CN201254292Y Blade for acquiring fluid differential pressure propelling force |
| 06/10/2009 | CN100497090C Low-reynolds number highly effective three blade propeller adapted for stratosphere |
| 06/03/2009 | EP1963682B1 Propeller |
| 05/21/2009 | US20090129930 Trolling motor propeller with elastomeric hub |
| 05/21/2009 | US20090127384 Wake Ingestion Propulsion System for Buoyant Aircraft |
| 05/14/2009 | DE102008008060A1 Rotor for use as e.g. airplane or ship rotor in water vehicle, has circular rotor blade with wing lower edge exhibiting ring shape from ring segments that change wing position in each segment from lift position into drift position |
| 05/13/2009 | EP2058226A1 Aircraft equipped with a silent shrouded rotor |
| 05/13/2009 | CN201235925Y W cast screw propeller |
| 05/13/2009 | CN100486867C Helirota plane |
| 05/12/2009 | US7530790 Rotor blade folding system |
| 05/12/2009 | US7530168 Method of manufacturing a wind turbine blade root |
| 05/07/2009 | WO2009058357A1 System and method for controlling a turbine blade |
| 05/07/2009 | US20090114764 Automatic conversion system for tiltrotor aircraft |
| 05/07/2009 | CA2706068A1 System and method for controlling a turbine blade |
| 05/06/2009 | CN100484831C Fan-type fluid transportation and power propulsion propeller |
| 05/05/2009 | US7527478 Fan blade mounting system |
| 05/05/2009 | US7526862 Method of manufacturing a hollow blade for a turbomachine |
| 04/29/2009 | EP2052965A2 Hydraulic adjustable propeller |
| 04/28/2009 | US7524169 Helicopter pitch link with accessible adjustment features |
| 04/23/2009 | US20090102415 Suitcase power system |
| 04/22/2009 | EP2050670A2 Electrohydraulic propeller controller |
| 04/21/2009 | US7521105 Connection between composites with non-compatible properties and method for preparation |
| 04/21/2009 | US7520722 Method for increasing a blade performance (variants) |
| 04/18/2009 | CA2606927A1 Curved blade for wind turbines |
| 04/16/2009 | WO2008107867A3 Improved stabilization for flight platforms |
| 04/14/2009 | US7517198 Lightweight composite truss wind turbine blade |
| 04/09/2009 | WO2008036526A3 Rotor blade folding system |
| 04/02/2009 | US20090084889 Aircraft having a reduced acoustic signature |
| 03/26/2009 | WO2009038923A1 Fan blades |
| 03/26/2009 | WO2005084373A3 Methods and systems for controlling the pitch of a propeller |
| 03/26/2009 | US20090081045 Aerodynamic Interface Component for Fan Blade |
| 03/26/2009 | US20090081043 Folding rotor for an autogyro device |
| 03/26/2009 | DE202008015321U1 Ringflügelmuster AC-8 Ring wing pattern AC-8 |
| 03/25/2009 | CN100471657C Connection between members |
| 03/19/2009 | WO2008147451A3 Translational thrust system for a rotary wing aircraft |
| 03/17/2009 | US7503750 Variable pitch rotor blade with double flexible retention elements |