Patents
Patents for B64C 27 - Rotorcraft; Rotors peculiar thereto (10,112)
06/1999
06/01/1999US5909449 Multibit-per-cell non-volatile memory with error detection and correction
06/01/1999US5908522 Supplemental leading edge wear strip for a rotor blade
06/01/1999US5908185 Handrail and bumper combination
05/1999
05/25/1999US5907211 High-efficiency, large stroke electromechanical actuator
05/25/1999US5906476 Main rotor system for helicopters
05/20/1999DE19842543A1 Craft with hovering capabilities
05/20/1999DE19749794A1 Drive unit
05/19/1999CN1217049A Vibration isolation ring gear for planetary gear drive
05/14/1999WO1999022990A1 Spring element and support bearing for helicopter tail rotors and supporting structures for use in space
05/12/1999EP0866765B1 Rotor system having alternating length rotor blades for reducing blade-vortex interaction (bvi) noise
05/12/1999DE19748682A1 Federelement und Stützlager für Hubschreiberheckrotoren und Tragestrukturen zum Einsatz im Weltraum Spring element and support bearings for Hubschreiberheckrotoren and support structures for use in space
05/11/1999US5903077 Modular vibratory force generator, and method of operating same
05/11/1999US5901616 Inertial mass for vibration isolators
05/06/1999WO1999010233A3 Vibration isolator for rotorcraft
05/05/1999CN2317173Y Double-rotary wing helicopter
05/05/1999CA2214967A1 Helicopter stabilization system
04/1999
04/29/1999WO1999020527A1 Rotorcraft
04/28/1999EP0911833A2 Multi-level non-volatile memory with error detection and correction
04/28/1999EP0911257A2 Helicopter blade aerofoil
04/28/1999EP0910534A1 Helicopter rotor blade control device
04/27/1999CA2143112C Fluid-and-elastomer device
04/22/1999DE19745492A1 Vertical take off aircraft
04/20/1999US5895012 Method and device for reducing the effect of the vibration generated by the driveline of a helicopter
04/14/1999CN1214017A Composite cuff structure for helicopter rotors
04/14/1999CN1214016A Axisymmetric elastomeric bearing assembly for helicopter rotors
04/07/1999EP0857139B1 Aircraft
04/06/1999CA1340478C Blade with a reduced vulnerability for rotorcrafts and process for producing the same
04/01/1999WO1999015401A1 Helicopter blade with flap, and rotor control unit using the same
04/01/1999WO1999015398A1 Ducted turbine
03/1999
03/31/1999EP0905019A2 Load-bearing structure
03/25/1999WO1999014114A1 Inertial mass for vibration isolators
03/25/1999WO1998026980B1 Hovering aircraft
03/25/1999DE19741030A1 Model helicopter mechanism
03/23/1999US5885059 Composite tip cap assembly for a helicopter main rotor blade
03/18/1999WO1999012809A1 Rotor control system
03/17/1999EP0901961A1 Rotorcraft rotor blade with reduced acoustic signature
03/17/1999EP0901450A1 Monolithic structures having improved flaw tolerance
03/09/1999US5879131 Main rotor system for model helicopters
03/04/1999WO1999010877A2 Active noise control system for a defined volume
03/04/1999WO1999010236A1 Gearbox with torque division, in particular for a helicopter rotor drive
03/04/1999WO1999010235A1 Helicopter with a gyroscopic rotor and rotor propellers to provide vectored thrust
03/04/1999WO1999010233A2 Vibration isolator for rotorcraft
03/03/1999EP0899553A2 Method of monitoring an epicyclic gear assembly equipped with acceleration sensors in a vehicle, in particular a helicopter
03/03/1999EP0898550A1 Hub for rotor head of rotary wing aircraft and rotor head with such hub
02/1999
02/25/1999WO1998026980A3 Hovering aircraft
02/25/1999DE19736572A1 Helicopter rotor mast with divided drive unit
02/24/1999EP0897492A1 Vibration isolated ring gear for planetary gear drive
02/24/1999EP0897365A1 Helicopter swash plate with integrated pump
02/24/1999CN1209087A Shaft phase control mechanism
02/23/1999US5873546 System and method for conducting one engine inoperative flight procedures training in a dual-engine helicopter
02/23/1999US5873545 Combined flying machine
02/18/1999DE19802256C1 Steering control for helicopter rotor drive
02/17/1999EP0896922A2 Helicopter transmission
02/11/1999WO1999006499A1 Adhesive composition for hot bonding and bonding method using same
02/09/1999US5868351 Rotor blade stowing system
02/03/1999EP0894712A2 Helicopter rotor brake
02/03/1999EP0894711A2 Releasable coupling for a helicopter tail rotor power transmission line
02/02/1999US5865399 Tail Boom for aircraft
02/02/1999CA1340376C Pale a faible signature radar
01/1999
01/28/1999WO1999003728A1 Method and device for assisting the pilot in controlling the turboshaft power and/or rotor speed of heat-propelled helicopters
01/26/1999US5863181 Blade with shielding for enhanced protection against lightning, for rotocraft rotor
01/21/1999WO1999002398A1 Structural component having means for actively varying its stiffness to control vibrations
01/21/1999WO1998045886A3 High-efficiency, large stroke electromechanical actuator
01/21/1999DE19814984A1 Rotor head for rotary wing craft
01/21/1999DE19748707C1 Pivoting damper for airframe of helicopter
01/20/1999EP0597038B1 Ducted fan and pitch controls for tail rotor of rotary wing aircraft
01/13/1999EP0759128A4 Hybrid fluid and elastomer damper
01/13/1999EP0740746A4 Vibration isolation system
01/07/1999WO1999000298A1 Blade profile for aircraft rotor and rotor comprising same
01/07/1999EP0889316A2 Method of monitoring a transmission assembly of a vehicle equipped with acceleration sensors, in particular a helicopter
01/07/1999EP0889315A2 Method of monitoring, on the basis of signal energy, a transmission assembly of a vehicle equipped with acceleration sensors, in particular a helicopter
01/07/1999EP0889314A2 Method of monitoring a transmission assembly of a vehicle equipped with acceleration sensors, in particular a helicopter
01/07/1999EP0889313A2 A method of monitoring a transmission assembly of a vehicle equipped with acceleration sensors, in particular a helicopter
01/07/1999EP0888964A1 Improvements to rotorcraft blade folding devices
01/07/1999EP0888235A1 Composite cuff structure for helicopter rotors
01/07/1999EP0888234A1 Axisymmetric elastomeric bearing assembly for helicopter rotors
01/07/1999EP0790924B1 Pitch adjustment assembly for bearingless main rotors
01/05/1999US5855709 Method of making a composite flow-straightener vane
01/05/1999US5855471 Helicopter rotor brake assembly
12/1998
12/30/1998EP0887257A2 Airfoil with dynamic stall control by oscillatory forcing
12/29/1998US5853152 Collective detent system for vertical takeoff flight operations
12/29/1998US5853145 Rotor head for rotary wing aircraft
12/29/1998US5853144 Helicopter and method for reducing vibration of a helicopter fuselage
12/23/1998CN2301393Y Superlight rotor craft
12/23/1998CN1202861A Hybrid aircraft
12/17/1998WO1998056658A1 Reusable spaceship
12/17/1998WO1998056656A1 Gyroplane rotor with double-plate hub and external pitch control
12/15/1998US5850615 Rotor blade swashplate-axis rotation and gyroscopic moments componsator
12/02/1998EP0881529A1 Unmanned remote controlled helicopter with cameras
12/02/1998EP0830286B1 A hybrid composite flexbeam for a helicopter bearingless main rotor assembly
12/02/1998EP0760777B1 A stacked compound planetary gear train for an upgraded powertrain system for a helicopter
12/02/1998CN1200702A Aircraft
12/01/1998US5842665 Launch vehicle with engine mounted on a rotor
12/01/1998CA2055202C Snubber-bearing with combined elastomer laminates
11/1998
11/25/1998EP0771265B1 Method and apparatus for forming airfoil structures
11/24/1998US5839691 Vertical takeoff and landing aircraft
11/18/1998EP0878394A1 Rotor blade for rotary-wing aircraft
11/17/1998US5836545 Rotary wing model aircraft
11/12/1998WO1998030448A3 Rotor for rotary wing aircraft
11/12/1998DE19748716C1 Rotor blade heater and lightning diverter for wind turbine operation in sub-zero conditions
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