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Trim effect on the resistance of sailing planing hulls

机译：修剪对滑行船体阻力的影响

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摘要

Sailing skiffs are light-weight high-performance small boats of growing interest in competitive sailing. The present paper presents towing tank tests performed on the Aura skiff, which was a candidate for the 2016 Olympic games. Resistance, sink and trim were measured for different longitudinal positions of the crew weight and for Froude numbers (based on the boat's length over all) ranging from 0.30 to 1.03. For each test, detailed analysis of the measurement uncertainty was performed. The measured resistance was found in good agreement with the resistance computed with established empirical formulations developed for planing hulls. It was found that the optimum crew position moves from forward to aft when the Froude number increases. An incorrect longitudinal centre of gravity led to a maximum resistance penalty at Froude number around 0.4. These trends are in agreement with the sailor's experience and with measurements performed by other authors on large vessels.
机译：帆船艇是对竞争性帆船越来越感兴趣的轻型高性能小型船。本文介绍了在Aura快艇上进行的拖曳箱测试，Aura快艇是2016年奥运会的候选人。测量了乘员重量不同纵向位置的阻力，下沉和纵倾以及弗劳德数（根据船的总长）在0.30至1.03之间。对于每个测试，都对测量不确定度进行了详细分析。发现测得的阻力与为飞机船体开发的建立的经验公式计算出的阻力非常吻合。发现当弗洛德数增加时，最佳乘员位置从向前移动到向后。不正确的纵向重心会导致在约0.4的弗劳德数下产生最大的阻力损失。这些趋势与水手的经验以及其他作者在大型船只上进行的测量结果一致。

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