关键词: 全垫升气垫船, 柔性围裙, 参数化建模, 数值分析, 二次开发

Abstract: Plough-in at high speed is one of the three unique potential hazards for the air cushion vehicle (ACV). The anti tuck-under ability of ACV bow flexible skirt is the key technical measure to avoid the serious consequences caused by the occurrence of plough-in. The three-dimensional (3D) model of the bow flexible skirt is established to calculate its anti tuck-under capability based on the secondary development of CATIA. This model can easily take into account the influence of the skirt cylindrical fore-face, the two side-ear flaps and the transiting arc from the fore-face to the side-ear flap, with the more accurate description of the actual structure of the skirt. The capability of the anti tuck-under of the bow skirt can then be evaluated more precisely to promote the design of the skirt and to guarantee the navigation safety.

Key words: air cushion vehicle, flexible skirt, parametrical modeling, numerical analysis, secondary development