| 摘要 |
A rigid wing or airfoil for a sail board is pivotable through 180 DEG about horizontal pivot 5 at the top of mast R, while pivot T allows the angle of incidence of the wing to be set. The mast may be pivoted about X, and the wing ends may have floats W. The wing incidence may be controlled by vanes or spars extending from the wing ends. Alternatively, the wing may rotate about a horizontal axis, and about a vertical axis with the mast (Fig. 6). The rig may be used on dinghies, or on commercial vessels with wind sensors operating hydraulics. <IMAGE> |
