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US3635426A
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Rotary wing transport aircraft
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US3494424A
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Aircraft sustaining rotor system and rotor blade therefor
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US3433306A
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Cambered blade for aircraft sustaining rotor
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US2889887A
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Method of operating rotary wing aircraft including jet-driven rotors
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US2698059A
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Helicopter control system
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US2877856A
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Aircraft rotor blade control mechanism
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US2761521A
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Helicopter rotor control mechanism
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US2686019A
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Control for rotary wing aircraft with multiple rotors
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US2788075A
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Helicopter with paddle wheel type tail rotor
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US2623711A
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Multirotor helicopter
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US2659444A
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Molded aircraft sustaining rotor blade
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GB659163A
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Mechanism for balancing single blade aircraft rotor
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GB657796A
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Adjustment mechanism for helicopter stabilizing surface
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GB654757A
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Control mechanism for jet driven sustaining rotor blades
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US2656892A
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Aircraft sustaining rotor blade with suction system for boundary layer control
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GB654190A
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Deicing system for aircraft sustaining rotor blades
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US2742095A
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Mechanism for balancing single blade aircraft rotor
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US2776016A
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Jet driven sustaining rotor
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Automatic clutch for power transmission systems
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US2639776A
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Aircraft rotor with tilting hub and damper control of blade swinging
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