WIND TURBINE TEETER CONTROL

摘要

A teeter control comprise an hydraulic piston movable to and fro within an hydraulic chamber, and sealing means to restrain flow of hydraulic fluid between the piston and chamber, said piston being mounted for rotational movement relative to the chamber about an axis which lies displaced laterally from said chamber, said chamber being in the form of a curved passage having a centre of curvature coincident with said axis of relative rotational movement, and said chamber having a wall surface of substantially uniform cross-sectional dimensions over at least that part of the length of the passage at which said wall surface is engaged by the sealing means.