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Mathematical model for maneuverability of a riverine support patrol vessel with a pump-jet propulsion system

机译：带有水泵-喷射推进系统的河上保障巡逻舰机动性的数学模型

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摘要

A study on the maneuverability of a riverine support patrol vessel is made to derive a mathematical model and simulate maneuvers with this ship. The vessel is mainly characterized by both its wide-beam and the unconventional propulsion system, that is, a pump-jet type azimuthal propulsion. By processing experimental data and the ship characteristics with diverse formulae to find the proper hydrodynamic coefficients and propulsion forces, a system of three differential equations is completed and tuned to carry out simulations of the turning test. The simulation is able to accept variable speed, jet angle and water depth as input parameters and its output consists of time series of the state variables and a plot of the simulated path and heading of the ship during the maneuver. Thanks to the data of full-scale trials previously performed with the studied vessel, a process of validation was made, which shows a good fit between simulated and full-scale experimental results, especially on the turning diameter.
机译：对河上支援巡逻舰的机动性进行了研究，以推导数学模型并模拟该舰的机动性。该船的主要特点是其宽波束和非常规推进系统，即泵喷射式方位推进器。通过使用不同的公式处理实验数据和船舶特性以找到合适的流体动力系数和推进力，完成了一个由三个微分方程组成的系统，并对其进行了调整以进行转弯试验的仿真。该模拟能够接受变速，射流角和水深作为输入参数，并且其输出包括状态变量的时间序列以及操纵过程中模拟路径和航向的曲线图。得益于先前对被研究容器进行的全面试验的数据，因此进行了验证过程，该过程显示了模拟和全面试验结果之间的良好契合，特别是在转弯直径方面。

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