| Patents for B64C 27 - Rotorcraft; Rotors peculiar thereto (10,112) |
|---|
| 10/18/1990 | WO1990008063A3 Individual blade control system for helicopters |
| 10/09/1990 | US4961687 Fastening device including sleeves, and rotor blade equipped with such a device for fastening to a hub |
| 09/25/1990 | US4958786 Active control mechanism for a helicopter |
| 09/04/1990 | US4953811 Self-driving helicopter tail rotor |
| 08/30/1990 | DE3906109A1 Rotary-wing aircraft |
| 08/28/1990 | US4953098 Higher harmonic control system for X-Wing aircraft |
| 08/28/1990 | US4952120 Control device for monocyclic pitch in a fixed reference system and multicyclic pitch in a rotating reference system for blades of rotors of rotor craft |
| 08/22/1990 | CN2060763U Ring flank of helicopter |
| 08/21/1990 | CA1272888A1 Constant velocity joint and installation |
| 08/14/1990 | US4948068 Circulation control slots in helicopter yaw control system |
| 08/07/1990 | US4946354 Hydraulic device for individual control of pitch of a rotor blade |
| 07/26/1990 | WO1990008063A2 Individual blade control system for helicopters |
| 07/26/1990 | DE3901187A1 A flying object, which is equivalent to a biplane having four engines, but whose two upper wings and the two engines can be caused to rotate during take-off and landing, and can be converted to form a rotating wing |
| 07/25/1990 | EP0378839A2 Rotor blade |
| 07/18/1990 | EP0378302A2 Helicopters |
| 07/10/1990 | US4940196 Wing mounting nacelle for a very high by-pass ratio turbojet aero-engine |
| 07/10/1990 | CA1271543A1 Active vibration isolation system employing an electro-rheological fluid |
| 06/26/1990 | US4937758 Method and apparatus for reducing vibration over the full operating range of a rotor and a host device |
| 06/26/1990 | CA1270801A1 Air jet reaction contrarotating rotor gyrodyne with thrust reversers and specific rotor air supply controls |
| 06/19/1990 | US4935277 Blade constructed of composite materials, having a structural core and a covering of profiled cladding, and process for manufacturing the same |
| 06/05/1990 | US4930988 Individual blade control system for helicopters |
| 06/05/1990 | US4930983 Hybrid helicopter rotor hub retention plate |
| 05/29/1990 | US4928907 Compound helicopter with no tail rotor |
| 05/22/1990 | US4927331 Blade for high-performance shrouded propeller, multi-blade shrouded propeller provided with such blades and tail rotor arrangement with shrouded propeller for rotary wing aircraft |
| 05/15/1990 | US4925131 Aircraft with a plurality of propellers, a pipe structure for thereon holdable wings, for vertical take off and landing |
| 05/08/1990 | US4924400 Arrangement for controlling the performance of bob-up/bob-down maneuvers by a helicopter |
| 05/01/1990 | US4922096 System for monitoring and controlling physical movement |
| 04/11/1990 | EP0362373A1 Tail rotor |
| 04/10/1990 | US4916581 Rotor blade illumination device |
| 04/10/1990 | US4916445 Obstruction proximity indication system for an aircraft |
| 04/10/1990 | US4915585 Rotary-wing aircraft rotor head having resilient-return interblade ties with built-in damping |
| 04/04/1990 | EP0362117A2 Hybrid helicopter rotor hub retention plate |
| 04/03/1990 | US4913376 VTLH autogyro |
| 04/03/1990 | US4912999 System for pivotably supporting and transmitting power through a helicopter transmission and rotor |
| 03/28/1990 | EP0360688A1 Flapping stop device for rotorcraft blades, and rotor head using it |
| 03/28/1990 | EP0360661A1 Rotorcraft blade and rotor using same |
| 03/21/1990 | EP0359624A1 Individual blade pitch control device using rotating linear jacks |
| 03/21/1990 | EP0359623A1 Highly harmonic feathering control device for rotorcraft blades |
| 03/15/1990 | DE3830309A1 Helicopter |
| 03/14/1990 | CN1007144B Aerodynamic device |
| 03/13/1990 | US4907622 Fluid reservoir device |
| 03/08/1990 | DE3842897A1 Aircraft |
| 03/07/1990 | EP0357537A2 Arrangement for controlling the performance of bop-up/bop-down maneuvers by a helicopter |
| 03/07/1990 | EP0356541A1 Vertically taking off and landing aircraft, which flies horizontally on wings which include a pipe structure and which can be pivoted from substantially vertical to horizontal position |
| 03/06/1990 | US4905932 Rotary wing aircraft shrouded propeller tail assembly |
| 02/20/1990 | US4901950 Aircraft fuselage |
| 02/13/1990 | US4899959 Gas turbine power plant arrangement |
| 02/13/1990 | US4899957 Air borne craft, for example helicopter, and related devices |
| 02/13/1990 | US4899641 Electro-hydraulic helicopter system having individual blade control |
| 02/08/1990 | WO1990001002A1 Helicopter rotor blades |
| 02/08/1990 | DE3821961A1 Vehicle for military purposes, and a method to be carried out with it for destroying railway tracks and other long structures |
| 02/07/1990 | EP0353488A2 Cockpit, in particular for a helicopter |
| 02/06/1990 | US4898515 External wrap of composite flexbeam |
| 02/01/1990 | DE3838782C1 Blade connection for a rotary wing aircraft |
| 01/24/1990 | EP0351578A2 Spring device for the rotating connection of two elements |
| 01/24/1990 | EP0351577A2 Rotor, in particular for a rotor craft |
| 01/23/1990 | CA1264714A1 Robotic or remotely controlled flying platform |
| 01/17/1990 | EP0351104A2 Helicopter rotor blades |
| 01/16/1990 | US4893988 System for damping lead-lag motion of rotor blades of helicopter |
| 01/09/1990 | US4892462 Blade of composite materials and its manufacturing process |
| 01/09/1990 | US4892461 Flexbeam for rotor blades of helicopter and method for fabrication thereof |
| 01/09/1990 | CA1264313A1 Variable-pitch multi-blade propeller having individually dismountable composite material blades |
| 12/19/1989 | US4887782 Cyclic control sticks for helicopters |
| 12/12/1989 | US4886419 Elastomeric bearing for helicopter rotor having lead-lag damping |
| 12/07/1989 | DE3817978A1 Helicopter having a tail rotor which can pivot |
| 11/30/1989 | DE3914457A1 Rotor for helicopters and model helicopters having controllable backpressure compensation, while at the same time increasing the forward propulsion speed |
| 11/30/1989 | DE3818016A1 Annular wing rotor for aircraft |
| 11/23/1989 | EP0342791A2 An electro-hydraulic helicopter system having individual blade control |
| 11/21/1989 | US4881874 Tail rotor |
| 11/16/1989 | WO1989010869A1 Lift-jet engine for independent operation or for use in an aircraft |
| 11/14/1989 | US4880355 Blade with curved end for a rotary airfoil of an aircraft |
| 11/02/1989 | EP0340095A1 Rotor head having elastic, internally damped return devices between the blades |
| 11/02/1989 | EP0339098A1 Vertical take off vehicle |
| 10/31/1989 | US4877375 Drive shaft and rotor hub for helicopter flexible rotor system |
| 10/25/1989 | CN1036536A Airfoiled blade |
| 10/24/1989 | US4875643 Starter arrangement for a helicopter |
| 10/17/1989 | USRE33097 Position detector |
| 10/17/1989 | US4874292 Apparatus for damping helicopter rotor blade oscillations |
| 10/17/1989 | US4874291 Rotor arrangement for a rotorcraft |
| 10/11/1989 | CN1036182A Blade for high-performance shrouded propeller |
| 10/05/1989 | WO1989009164A1 Tail rotor |
| 10/04/1989 | EP0335786A1 Elastic strut with an integrated hydro-mechanic resonator, in particilar for the suspension of a gear box on a rotorplane, and a suspension device comprising such an application |
| 09/27/1989 | EP0334716A1 Blade elastohydraulic return device with linear damping through restriction of a viscous fluid flow |
| 09/26/1989 | US4868962 Method of fabricating a helicopter rotor system |
| 09/19/1989 | US4867396 Micro flap trailing edge device for an aircraft wing |
| 09/13/1989 | EP0332492A1 High-performance shrouded-propeller blades, and shrouded propellers provided with such blades acting as Fenestron tail rotors |
| 09/13/1989 | EP0331791A2 Rotor for a rotor-craft |
| 09/12/1989 | CA1259204A1 Main gearbox for twin-engined helicopter |
| 09/06/1989 | EP0331603A2 Airfoiled blade |
| 08/22/1989 | US4859148 Preloaded tunable elastomeric flapping hinge bearing and method of preloading |
| 08/16/1989 | EP0328363A2 Piezo electric actuator method and apparatus |
| 08/16/1989 | EP0327672A2 Rotor with a flapping joint in the rotor centre |
| 08/15/1989 | US4856732 Airborne vehicle with hydraulic drive and control |
| 08/09/1989 | EP0238588B1 Aircraft with rotary wings |
| 08/03/1989 | DE3801010A1 Rotor, especially for a rotary-wing aircraft |
| 07/27/1989 | WO1989006623A1 Apparatus and method for tracking a rotating blade to determine parameters associated with the rotation of that blade |
| 07/27/1989 | DE3801285A1 Rotary-wing aircraft, especially a helicopter or heavy-lift helicopter |
| 07/12/1989 | EP0323857A2 Flexbeam for rotor blades of helicopter and method for fabrication thereof |
| 07/11/1989 | US4845939 Gas turbine engine with bypass diverter means |
| 07/04/1989 | US4845357 Method of actuation and flight control |