| 摘要 |
<p>An aerofoil shape having a section with a maximum total thickness in the range of 20% to 40% of the total chord and a 90% thickness zone that extends for at least 17% and at most 33% of the total chord and lies in the range of 105 to 55% along the chord. In a compound wingsail both the leading and trailing elements belong to this basic section but the leading section has a more abrupt trailing edge and the trailing section has a blunted nose.</p> |
