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FR1546383A
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Engine devices for airplanes and more particularly for helicopter engines
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US3429198A
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Pivoting spring capsule trim apparatus for helicopter rotor collective pitch control
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US3383933A
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Engine support and belt drive apparatus
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US3232349A
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Rotor system utilizing centrifugal deflection of non-radial blades
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US3211235A
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Control system for yaw control rotors of helicopters
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US3253474A
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Spacer mounting apparatus for beltdrive engine installations
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US3200887A
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Helicopter rotor system having elastomeric bearings
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US3200477A
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Helicopter tail rotor structure and method of construction
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US3167129A
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Construction of airfoils having elastically-bent afterbodies
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US2994386A
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Control mechanism
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CA701019A
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Helicopter tail rotor structure and method of construction
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CA769883A
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Spacer mounting apparatus for belt-drive engine installations
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CA718312A
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Construction of airfoils having elastically-bent afterbodies
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CA731007A
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Helicopter rotor system having elastomeric bearings
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CA639316A
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Control mechanism
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CA820012A
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Engine support and belt drive apparatus
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