Patents
Sitemap › B64 - Aircraft; Aviation; Cosmonautics › B64C - Aeroplanes; Helicopters › B64C 27 - Rotorcraft; Rotors peculiar thereto
Patents for B64C 27 - Rotorcraft; Rotors peculiar thereto (10,112)
11/1982
11/02/1982US4357057 Laminated bearing with improved low temperature operating characteristics
11/02/1982CA1134870A1 Vibration suppression system
10/1982
10/20/1982EP0063078A1 Vibration damping device for helicopter
10/20/1982EP0062737A1 Rotor blade or rotor blade component and process for the production thereof
10/12/1982US4354234 Automatic lock-positioning of foldable helicopter blades
10/06/1982EP0061567A2 Aerodynamic propeller blade and manufacturing process
10/05/1982US4352632 Rotor mounting assembly for rotary wing aircraft
10/05/1982US4352631 Hingeless rotor, especially for a helicopter
09/1982
09/28/1982CA1132683A1 Electrically controlled elevator
09/15/1982EP0059735A1 Hybrid composite structures.
09/14/1982US4349317 Bearingless rotor for single and tandem helicopters
09/14/1982US4349316 Twist control for helicopter tail rotor pitch change
09/07/1982US4347997 Helicopters
08/1982
08/31/1982CA1130770A1 Tail rotor control cable-pylon fold accommodation
08/31/1982CA1130769A1 Adjustable bearing centering means for helicopter rotor elastomeric bearings
08/24/1982US4345876 Rotor structure for a rotary wing aircraft
08/18/1982EP0058117A1 Simplified antiresonant suspension device for a helicopter
08/17/1982US4345237 Supervisory and monitoring system for helicopter propeller blades
08/17/1982US4344995 Hybrid composite structures
08/17/1982US4344739 Hingeless and bearingless multiblade rotor for rotary wing aircraft
08/11/1982EP0057272A2 Rotorblades in shell construction
08/04/1982EP0057053A1 Helicopter rotors
08/03/1982US4342540 Articulated rotor for helicopters
07/1982
07/27/1982US4341499 Blade retention system
07/20/1982US4340335 Helicopter tail rotor with pitch control mechanism
07/13/1982US4339230 Bifoil blade
07/07/1982EP0055660A1 Curve-shaped laminated bearing, in particular for a helicopter rotor
07/06/1982CA1127133A1 Desensitizing helicopter control response to inadvertent pilot inputs
06/1982
06/15/1982US4335174 Honeycomb structure end closure
06/15/1982US4334828 Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency
06/15/1982US4334825 Elastomeric damping device especially for the neck of helicopter wing blades
06/08/1982US4333728 Compound hub spring system for helicopters
06/01/1982US4332525 Matched stiffness rotor flexbeam and blade system
05/1982
05/18/1982US4330829 Helicopter flight stability control induced oscillation suppression
05/11/1982US4329119 Rotor blade internal damper
04/1982
04/27/1982US4326834 Helicopter rotor assembly and blade pitch control
04/20/1982US4325675 Blade profile for rotary wing of an aircraft
04/13/1982US4324530 Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency
04/13/1982CA1121787A1 Helicopter with stabilator detuned in antisymmetric vibration modes from main rotor wake excitation frequency
04/13/1982CA1121786A1 Blade fold restraint system
04/07/1982EP0048799A1 Rotor for a rotary wing aircraft
04/06/1982US4323332 Hingeless helicopter rotor with elastic gimbal hub
04/01/1982WO1982000974A1 Hybrid composite structures
03/1982
03/31/1982EP0048649A1 Rotor blade airfoil for a helicopter
03/23/1982US4321013 Headpiece support for rotor of a rotary wing aircraft
02/1982
02/23/1982US4316701 Composite aerodynamic rotor blade assembly
02/23/1982US4316700 Unitary, bonded-together helicopter rotorblade
02/09/1982US4314795 Advanced airfoils for helicopter rotor application
01/1982
01/26/1982US4313201 Tested, dissimilar helicopter stability augmentation
01/26/1982CA1117091A1 Blade braking load stop
01/19/1982US4311213 Vibration isolation system
12/1981
12/29/1981US4307996 Helicopter rotors
12/22/1981US4306837 Bearingless tail rotor for helicopters
12/22/1981US4306836 Hub assembly
12/15/1981US4305699 Blade for a wind motor
12/15/1981CA1114353A1 Rotary actuator incorporating stress responsive components
12/08/1981US4304525 Helicopter rotor
12/08/1981US4304375 Electrically controlled elevator
12/08/1981CA1113912A1 Compound hub spring system for helicopters
12/02/1981EP0040636A1 Gyro stabilized flying saucer model
12/01/1981CA1113442A1 Helicopter
12/01/1981CA1113441A1 Cross beam rotor
11/1981
11/24/1981US4302155 Air craft propeller assembly with composite blades
11/24/1981US4302154 Integrated transmission and rotor head
11/24/1981US4301981 Aircraft with rotary wing
11/17/1981CA1112674A1 Fixed position variable frequency pendular-type vibration absorber
11/17/1981CA1112630A1 Helicopter blade
11/10/1981US4299540 Tail rotor blade
11/10/1981US4299539 Four-blade rotor, especially for helicopters
11/10/1981US4299538 Cross beam rotor
11/10/1981CA1112230A1 Helicopter collective lever
11/04/1981EP0039138A2 Improvements in or relating to aerodynamic rotors
11/03/1981US4298417 Method of manufacturing a helicopter rotor blade
11/03/1981CA1111823A1 Rotor aircraft
10/1981
10/28/1981EP0038441A1 Rotor blade pitch control for helicopter with coaxial rotors
10/27/1981US4297080 Rotor blade pitch control linkage
10/27/1981US4297078 Helicopter rotors
10/27/1981US4296892 Spherical living module or space
10/27/1981CA1111400A1 Constant frequency bifilar vibration absorber
10/14/1981EP0037633A1 Helicopter rotor blade
10/13/1981CA1110668A1 Fixed position pendular-type vibration absorber with linearization at fixed or variable frequencies
10/13/1981CA1110606A1 Cross-beam helicopter rotor with readily replaceable snubber
10/13/1981CA1110605A1 Tuned spring-mass vibration absorber
10/13/1981CA1110604A1 Elastomeric helicopter load reaction system
10/06/1981US4293277 Supple mounting arrangement for helicopter rotor with through strip
10/06/1981US4293276 Laminated composite rotor yoke
10/06/1981US4293109 Pivotable cable guard for retaining a swingable-movable cable
09/1981
09/30/1981EP0036825A1 High-performance blade for helicopter rotor
09/29/1981US4292009 Hingeless rotor system
09/15/1981US4289450 Rotor for operation in a flow medium
09/15/1981US4289448 Device for limiting the flapping movements of a rotary-wing aircraft main rotor
09/15/1981CA1109046A1 Control system for redundant swashplate drive
09/08/1981CA1108585A1 Pitch control system for helicopter rotor blades
09/08/1981CA1108584A1 Laminated elastomeric end bearings for articulating links
08/1981
08/26/1981EP0034210A2 Helicopter rotor
08/19/1981EP0034092A1 Antiresonance suspension system for helicopter
08/19/1981EP0033771A2 Elastomeric damping device
08/18/1981USRE30713 Cross beam rotor
08/18/1981US4284387 Blade fold restraint system
08/05/1981EP0033275A1 Process for making a flexible and torsional element, and elements obtained by this process
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