全垫升气垫船全圆周浪向下耐波性分析

Sea-keeping Analysis of Air Cushion Vehicle under Full Circle Wave Directions

对全垫升气垫船耐波性进行了研究,考虑气垫压力、升沉、纵摇和横摇运动之间相互耦合下的综合效应。较之仅分析迎、逆浪或者横浪工况,所采用的方法可对任意浪向工况进行研究。通过MATLAB平台上所编制的相应程序,得到圆周浪向、不同波频下全垫升气垫船的升沉、纵摇和横摇响应。计算结果表明,在若干浪向角和遭遇频率组合下,气垫船发生升沉、纵摇和横摇运动共振耦合,响应幅值大大高于其他工况,这将对气垫船正常运营造成极大危险。这一结果可供气垫船设计者和驾驶员参考。

The seakeeping of air cushiou vehicle（ACV）under with the couples between the presuce of cushion and full circle wave direction is researched on considered heave, pitch and roll. In the previous reserachs, the situations in head wave and cross wave were discussed only. Then a Matlab program is compiled to calculate the frequeucy responses of the heave, the pitch and the roll of the craft under different wave frequeucies and different directions. The results show that the sympathetic vibration of heave, pitch and roll is happened under some dangerous situations and the response amplitude is higher than those under the ordinary conditions. The results could be helpful for the designers and the operaters of the ACV.