Study of the Wave Devouring Propulsion System in the directional waves

吞波推进系统(WDPS)是将波浪能直接转化为推力的装置之一。该系统由船体和水下箔片组成。翼片产生的阻尼力期望船体在波浪中运动减少。此外，波阻增大，波阻减小，翼片推力可以在波浪处使用。设计了新的双翼WDPS模型，并在波浪水池中进行了试验。研究了WDPS在方向波中的运动特性。从实验结果看，横浪条件下的推进速度比头浪条件下的速度快。从这些结果可以看出，WDPS即使在方向波中也具有广泛的适用性。

The wave Devouring Propulsion System (WDPS) is one of devices which converts the wave energy directly into thrust. The system consists of hull and underwater foil. The damping force generated by the foil expects hull motion reduction in waves. Moreover, resistance increases in waves reduced and the foil thrust can use in waves. The new WDPS model with two foils was designed and tested in wave tank. The characteristics of the WDPS in the directional waves were studied. From these experiments, the advancement speed in beam sea condition becomes faster than head sea condition. From these results, widely applicability of WDPS even in the directional waves proved.