ROTOR HEAD WITH TORSION BAR BUSH AND FAIRING FOR AUTOGYRO AT JUMP TAKEOFF AND VERTICAL LANDING Russian patent published in 2007 - IPC B64C27/02 

FIELD: rotary-wing aircraft; autogyroes in particular at jump takeoff and vertical landing; rotor heads provided with torsion bar bushes and fairings.

SUBSTANCE: body of rotor head boss is secured to pylon through frame joint and bearing through which hollow shaft passes. Rod passing through hollow shaft is connected with rocker arm shaft through bearing race. Gear wheel is fitted on hollow shaft rigidly or through overrunning clutch depending on rotor spinning-up drive. Gear wheel may be rigidly mounted on hollow shaft; gear of rotor spinning-up drive is mounted via Bendix drive or on hinged joint. Gear wheel may be mounted on shaft via overrunning clutch; gear of rotor spinning-up drive is thrown into constant engagement with gear wheel. Rocker arm shaft has slot for performing translational motion and locking with pin. Rotor bush secured on hollow shaft by means of pin consists of swivel joint and torsion bar stacked from fiberglass laminates. Fairing mounted on rotor head plate performs function of force compensator.

EFFECT: enhanced operational reliability due to simplified construction.

4 dwg