英文摘要：Common questions about waterjet propulsion unit installation on board were researched, which is the concern of the ship designers. First, with the same total power, the relationships between the quantity of waterjet propulsion units and transom width occupied, transom area occupied, weight of all units were derived theoretically. Secondly, based on the experiences from ship applications, the engineering matters about layout of waterjet units on the hull, which include the height of shaft line, transom draft, distance of shaft lines were analyzed and discussed. Then it comes to an important conclusion that increasing the quantity of allocation can significantly reduce weight, the total weight ratio is the reciprocal ratio of the square root of unit quantity. It is suggested that the transom draft should be reduced to eliminate the appendage resistance as early as possible, when the adverse effect on the ship's directional stability can be minimized by using deadwood or skeg. The corresponding layout suggestions can make the waterjet units fit well with the hull, give full play to the advantages of waterjet propulsion, improve the comprehensive navigation performance of ships.
2023,45(4): 9-13 收稿日期：2022-03-27
DOI：10.3404/j.issn.1672-7649.2023.04.002
分类号：U664.34
基金项目：工信部高技术船舶科研项目（工信部装函[2018]169号）
作者简介：周加建(1974-),男,研究员,研究方向为船舶喷水推进
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