An experimental study of interceptors for drag reduction on high-performance sailing yachts
An experimental study of interceptors for drag reduction on high-performance sailing yachts
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DOI：
10.1016/j.oceaneng.2011.03.006
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发表时间：
2011-06
影响因子：
5
通讯作者：
A. Day;C. Cooper
中科院分区：
文献类型：
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作者：
A. Day;C. Cooper
近年来，拦截器被广泛应用于快速渡轮和小型高速休闲和商用船只上，用于平顺性和纵倾控制以及转向。在高性能帆船的背景下，它们首次出现在2008年的游艇上，该游艇在领导旺代环球挑战赛时被拆除了桅杆。然而，尽管拦截器在动力艇中很受欢迎，但调查拦截器对船舶性能影响的研究却很少，显然没有针对帆船的研究。在目前的研究中，拦截器与一种被称为轮尼襟翼的空气动力学装置进行了比较。结果表明，拦截弹通常比格尼襟翼小得多。提出了一个全面的实验方案，探讨拦截器对Open 60游艇船体性能的影响。结果表明，在较宽的航速范围内，静水阻力显著降低，在8至20节航速范围内，收益为10-18%，同时降低了下沉和纵倾。所观察到的增益比在动力船上观察到的要大得多，也比通过纵向移动压载物来改变纵倾所能达到的增益要大得多。这些好处似乎主要体现在小海浪上。
Interceptors have been widely used in recent years in fast ferries and small high-speed leisure and commercial craft for ride and trim control, and steering. In the context of high-performance sailing yachts, they first appeared in 2008 on the yacht Ecover 3 which was dismasted while leading the Vendee Globe Challenge race. However, in spite of their popularity in power craft, few studies have been published investigating the impact of interceptors on vessel performance, and apparently none in the case of sailing yachts. In the current study, interceptors are compared with an aerodynamic device known as a Gurney flap. It is shown that interceptors are generally substantially smaller than Gurney flaps. A comprehensive experiment programme is presented exploring the impact of interceptors on the performance of an Open 60 yacht hull. Results show a marked reduction in calm-water resistance over a wide speed range, with benefits of 10–18% in the speed range between 8 and 20 knots, accompanied by reduced sinkage and trim. The gains observed are much larger than those observed in powercraft, and also substantially greater than those achievable through trim changes by moving ballast longitudinally. The benefits appear to be largely sustained in small waves.