| Patents for B64C 11 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (3,644) |
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| 06/06/2012 | CN102485590A Wavy-appearance flow reducer force-resisting technology |
| 06/05/2012 | US8192169 Highly reliable, low cost wind turbine rotor blade |
| 06/05/2012 | US8192159 Rigid rotor assembly for folding helicopter blades |
| 06/02/2012 | CA2759909A1 Aerofoil |
| 05/31/2012 | US20120134835 Connection means |
| 05/31/2012 | US20120134800 Propeller pitchlock un-locking device |
| 05/30/2012 | EP2458150A1 Method for damping mechanical vibrations occurring during operation in a turbomachine blade, turbomachine blade for carrying out the method and piezoelectric damping element to be installed in such a turbomachine blade |
| 05/30/2012 | EP2458146A1 Nose cone assembly |
| 05/30/2012 | EP2456665A2 Blade retention system for turboprop |
| 05/30/2012 | EP2456664A1 Mechanical joint |
| 05/30/2012 | CN202244084U Dish-shaped unmanned aerial vehicle with single propeller |
| 05/29/2012 | US8186961 Blade preloading system |
| 05/29/2012 | US8186957 Fan propeller, in particular for motor vehicles |
| 05/29/2012 | US8186940 Ventilation arrangement |
| 05/24/2012 | WO2012066262A2 Blade for a turbine engine propeller |
| 05/24/2012 | WO2012066240A1 Device for shifting a propeller into reverse, comprising an actuator acting on a crank pin |
| 05/24/2012 | US20120128491 Automatic Blade Pitch Angle Control Mechanism for Small Horizontal Axis Wind Turbines |
| 05/24/2012 | US20120128489 Wind Turbine Speed Maintenance System |
| 05/24/2012 | CA2817679A1 Device for shifting a propeller into reverse, comprising an actuator acting on a crank pin |
| 05/23/2012 | CN102472295A Hub for a propeller having variable pitch blades |
| 05/23/2012 | CN102472294A 螺旋桨桨毂 Propeller hub |
| 05/23/2012 | CN102470919A Device for retaining a blade for a turbine engine propeller |
| 05/22/2012 | US8182233 Component with a damping filler |
| 05/22/2012 | US8182222 Thermal protection of rotor blades |
| 05/18/2012 | WO2012064335A1 Composite rotor blade having weighted material for mass balancing |
| 05/18/2012 | WO2012062976A1 Improvements to propulsion units with contrarotating rotors that are quiet on takeoff |
| 05/18/2012 | CA2816509A1 Composite rotor blade having weighted material for mass balancing |
| 05/16/2012 | EP2452077A1 Blade orientation of an impeller or propeller |
| 05/16/2012 | CN102458984A Optimization of premium fiber material usage in wing turbine spars |
| 05/16/2012 | CN102452477A Rotor blade made of fiber-reinforced composite material and production method thereof |
| 05/10/2012 | DE102011052242A1 Flugzeugpropeller Airplane propeller |
| 05/09/2012 | EP2449265A1 Propeller hub |
| 05/09/2012 | CN102448819A Movable actuator device for controlling the orientation of the blades of a turboprop fan |
| 05/09/2012 | CN102448818A Device for controlling the orientation of the blades of a turboprop fan |
| 05/09/2012 | CN102448817A Stationary actuator device for controlling the orientation of the blades of a turboprop |
| 05/09/2012 | CN102442423A Adjustable-height foldable propeller |
| 05/08/2012 | US8172541 Internally-damped airfoil and method therefor |
| 05/08/2012 | US8172539 Wind turbine rotor blade joint |
| 05/08/2012 | US8172510 Radial compressor of asymmetric cyclic sector with coupled blades tuned at anti-nodes |
| 05/08/2012 | US8172507 Gas turbine blade with double impingement cooled single suction side tip rail |
| 05/03/2012 | WO2012057717A1 High efficiency propeller blade with increased pressure side surface |
| 05/03/2012 | US20120107133 Deicing device for propfan-type propeller blades |
| 05/03/2012 | CA2816263A1 A high efficiency propeller, contact surface of which is increased |
| 05/02/2012 | EP2447153A1 Method of enhancing the output efficiency of a propeller and reducing the noise thereof |
| 05/02/2012 | CN102438896A Deicing device for propfan-type propeller blades |
| 05/02/2012 | CN102438895A Electric deicing device for propfan-type propeller blades |
| 05/02/2012 | CN102438894A Electric generator disposed on a rotating turboprop part |
| 05/02/2012 | CN102431642A System and method for attenuating the noise of airfoils |
| 05/01/2012 | US8167574 Ceil fan blade assembly |
| 05/01/2012 | US8167573 Gas turbine airfoil |
| 05/01/2012 | US8167564 Fan blade |
| 05/01/2012 | US8167561 Helicopter aircraft vehicle rotor damper |
| 05/01/2012 | US8167542 Centrifugal fan with 360 degree continuous rotation |
| 04/26/2012 | US20120099988 Drive mechanism for a pair of contra-rotating propellers through an epicyclic gear train |
| 04/26/2012 | US20120099987 Stationary actuator device for controlling the pitch of fan blades of a turboprop |
| 04/26/2012 | DE102010046339A1 IOS-Sogturbine IOS Sogturbine |
| 04/25/2012 | EP2444316A1 Hydraulic variable pitch propeller |
| 04/25/2012 | CN102428254A Unducted propeller including variable pitch blades for a turbine engine |
| 04/25/2012 | CN101233045B 用于反转同轴螺旋桨系统的桨毂整流罩系统 Coaxial propeller system for reverse hub fairing system |
| 04/24/2012 | US8162616 Turbomachine fan |
| 04/24/2012 | US8162614 Workpiece, and also a welding method for the manufacture of a workpiece |
| 04/24/2012 | US8162611 Controllable pitch propeller with electrical power generation |
| 04/24/2012 | US8162609 Turbine airfoil formed as a single piece but with multiple materials |
| 04/24/2012 | US8162606 Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations |
| 04/19/2012 | WO2012051475A1 Aircraft propeller balancing system |
| 04/19/2012 | WO2012049414A2 Method for producing a fibrous metal structure by means of weaving |
| 04/19/2012 | CA2813887A1 Method for producing a fibrous metal structure by means of weaving |
| 04/18/2012 | EP2440454A1 Main rotor arrangement of an uav-helicopter |
| 04/17/2012 | US8157533 Wind turbine blade with variable aerodynamic profile |
| 04/17/2012 | US8157531 Closing assembly for a blade ring of turbomachinery |
| 04/17/2012 | US8157530 Locking sub-assembly for closing the remaining gap between the first and the last of a blade ring which are inserted in a circumferential groove of a turbomachine, and corresponding turbomachine |
| 04/17/2012 | US8157524 Axial flow fan with hub isolation slots |
| 04/17/2012 | US8157523 Method for the operation of a wind energy plant |
| 04/12/2012 | WO2012045946A1 Hydraulic device of a control device, such as a blade pitch-change device |
| 04/12/2012 | US20120087797 Rotor blade with control tube |
| 04/12/2012 | CA2812691A1 Hydraulic device of a control device, such as a blade pitch-change device |
| 04/11/2012 | EP2437979A1 Rotor damper and tail rotor with such a rotor damper |
| 04/10/2012 | US8152474 Cooling fan impeller |
| 04/10/2012 | US8152470 Device for the adjustment of the pitch of a motor blade of a wind turbine |
| 04/10/2012 | US8152465 Rotor blade for a rotor airplane |
| 04/05/2012 | WO2012044394A1 Hydraulic system for fan pitch change actuation of counter-rotating propellers |
| 04/05/2012 | WO2012042076A1 Water or wind turbine propeller |
| 04/05/2012 | US20120079809 Pitch change apparatus for counter-rotating propellers |
| 04/05/2012 | US20120079808 Hydraulic system for fan pitch change actuation of counter-rotating propellers |
| 04/05/2012 | CA2813366A1 Hydraulic system for fan pitch change actuation of counter-rotating propellers |
| 04/04/2012 | EP2436596A2 Pitch change apparatus for counter-rotating propellers |
| 04/04/2012 | EP2435697A1 A safety system for wind turbines and related wind turbine |
| 04/04/2012 | EP2435304A2 Device for controlling the orientation of the blades of a turboprop fan |
| 04/04/2012 | EP2435303A2 Movable actuator device for controlling the orientation of the blades of a turboprop fan |
| 04/04/2012 | EP2435302A1 Stationary actuator device for controlling the orientation of the blades of a turboprop fan |
| 04/04/2012 | CN102398674A 具有防冰覆层的螺旋桨叶片 Propeller blades have anti-icing coating |
| 04/03/2012 | US8147204 Aerodynamic interface component for fan blade |
| 04/03/2012 | US8147202 Wind turbine, a hub for a wind turbine and use hereof |
| 04/03/2012 | US8147196 Turbine airfoil with a compliant outer wall |
| 03/30/2012 | CA2752384A1 Pitch change apparatus for counter-rotating propellers |
| 03/28/2012 | EP2432688A1 Differential pitch control to optimize co-rotating stacked rotor performance |
| 03/28/2012 | EP2432686A1 Optimization of premium fiber material usage in wing turbine spars |
| 03/28/2012 | EP2432685A1 Shell structure of wind turbine blade having regions of low shear modulus |
| 03/28/2012 | CN102390523A Contra-rotating propeller engine |
| 03/28/2012 | CN101716996B Fishhook-type distance-variable rocker arm |