基于鱼雷制导的表层气泡尾迹主要特征研究

表层气泡尾迹由于其特殊的形成机制和丰富的信号特征,直接影响了可被探测的尾流自导作用距离,成为新型鱼雷尾流制导技术领域的重点研究对象。为此,本文在气泡运动基本方程基础上,考虑表层流场因素重点是波浪条件的影响,构建表层尾迹场气泡运动的耦合模型,进而分析了可有效表征表层气泡尾迹特征的气泡存留时间和数密度。结果表明,表层流场因素对气泡的主要特征变化影响显著,相对于静水条件,气泡存留时间最大可延长17倍,气泡相对数密度衰减时间最大可延长9倍。这对利用表层气泡尾迹主要特征进行制导的新型尾流自导鱼雷来说,可较大提高尾流自导作用距离。

Study on the Main Characteristics of Surface Bubble Trail Based on Torpedo Guidance

Due to its special formation mechanism and rich signal characteristics, the surface bubble wake directly affects the self-guided distance of the wake that can be detected, and has become the key research object in the field of new wake guidance technology. Therefore, based on the basic equation of bubble motion, and given the influence of surface flow field factors on the wave condition, this paper aims to constructs the coupled model of bubble motion in the surface wake field, followed by analyzing the bubble retention time and number density factor which can effectively characterize the characteristics of surface bubble wake. The results show that the surface flow field factors have a significant effect on the main characteristics of the bubble. Compared with the hydrostatic conditions, the bubble retention time can be extended by up to 17 times, and the bubble relative number density decay time can be extended by up to 9 times. And for the new type of wake self-guided torpedo that uses the main features of the surface bubble wake, the findings of this paper show that it greatly improves its self-guided distance of the wake.