Pitch control swash plates of helicopter rotor blades

摘要

The rotating (14) and non-rotating (16) stars are guided axially (Z-Z) and to tilt on this axis by non-rotating axial guides columns (28) and slides (33). One of two runners (38) carrying two diametrically opposite trunnions (41) slide on the slides. The runners allow pivoting of the non-rotating star around a diametral axis (X-X) whereas the sliding of the runners on the slides guides the pivoting of the non-rotating star around a second diametral axis (Y-Y) perpendicular to the other axes. This second axis is the axis of the cylindrical face (37) of the slides.