| 摘要 |
<p>Propeller with twistable blades comprising a spar (1) with ribs (4 to 6) which can be rotated in opposite directions about the axis of the spar (1) by means of an adjusting device. A coupling means in the propeller ensures that when two ribs are rotated in opposite directions by the adjusting device, the other ribs are adjusted accordingly. In this invention, the coupling means consists of a rod (20) substantially parallel to the spar (1) and designed to be relatively bendable in the plane through the spar (1) and the rod (20), and relatively resistant to bending in the plane perpendicular thereto. The rod couples at least three ribs together in such a way that it distorts when two ribs are rotated in opposite directions along a helix about the spar, causing subsequent ribs to move with it on this helix.</p> |
