| 摘要 |
<p>The wingsail has two rigid symmetrical aerofoil sail sections (10,12) mounted one downstream of the other. The railing sail section (12) is freely pivotally mounted to the center line of the leading sail section (10), so that its leading edge just clears the trailing edge of the leading sail section. A hinged symmetrical rigid flap extends downwind from the trailing edge of the leading sail section, the flap being adapted to be moved to one side or the other in response to a swinging movement of the trailing sail section relative to the leading sail section (10).</p> |
