高密度中低速全垫升气垫船越峰问题的探讨与实践

1吨级试验艇属于高密度中低速气垫船，其与气垫密度成平方关系的阻力峰值较大而设计推力相对较小，经采取措施解决了越峰困难问题。原阻力计算方法在阻力峰值处的计算结果不够精确是原因之一，故根据移动压力面兴波理论编制了直接计算兴波阻力的程序，使计算越峰所需推力更接近试验结果。理论计算与工程实践表明，在设计高密度中低速气垫船时需特别关注越峰性能校核，建议第一阻力峰处设计越峰裕度在原计算方法基础上应修正至不小于30%为宜。

Discussion and practice about hump transition problem of high-density air medium-low speed ACV

As the 1 tonnage class test craft is a high-density medium-low speed ACV, its drag hump which is proportional to square of air-cushion density is higher than the designed thrust. Some methods have been carried out to solve the difficulty of hump, and one of the reasons is imprecision calculation results at drag hump by using the former algorithm. A direct wave-making resistance program is set up according to the wave-making resistance theory of the traveling pressure surface, which can make the calculated thrust for the dump closer to the test result. Theoretical calculation and engineering practice has proved that the hump capacity check demands special attention for the design of high-density medium-low speed ACV. It suggests that the hump redundancy at the first drag hump should be modified at least 30%beyond the original algorithm.