基于先导放电理论的直升机初始雷击附着位置
发布时间：2018-07-26 06:43
【摘要】：提出了一种基于流注-先导放电理论的数值模拟方法来快速判断直升机初始雷击附着点。首先,根据标准SAE-ARP 5416A中规定的相关试验方法,确定平板电极大小、直升机离边界距离等参数。然后,利用Becerra-Cooray正极性先导起始和发展判据对UH-60"黑鹰"直升机的主旋翼翼尖、尾旋翼翼尖、水平尾翼以及机头部位进行分析比较。最后,通过不断改变平板电极电势的方法,找到各个关键位置产生稳定正极性先导所需的最小背景电场值,以此为依据来对其初始雷击附着位置进行分析。结果表明,主旋翼翼尖最易成为初始雷击附着位置,而机头则较难成为初始雷击附着位置。
[Abstract]:In this paper, a numerical simulation method based on the theory of streamer and pilot discharge is proposed to quickly determine the initial lightning attachment point of the helicopter. Firstly, according to the relevant test methods specified in standard SAE-ARP 5416A, the parameters such as the size of the plate electrode and the distance from the helicopter to the boundary are determined. Then, the main rotor tip, tail rotor tip, horizontal tail wing and nose position of the UH-60 "Black Hawk" helicopter are analyzed and compared by using the Becerra-Cooray positive lead initiation and development criterion. Finally, by changing the potential of the plate electrode continuously, the minimum background electric field value needed to produce the stable positive leader at each key position is found, based on which the position of initial lightning strike attachment is analyzed. The results show that the wingtip of the main rotor is the most likely to be the initial lightning stroke attachment position, while the nose is more difficult to become the initial lightning strike attachment position.
【作者单位】： 解放军理工大学国防工程学院;解放军理工大学电磁环境与电光工程国家级重点实验室;总参工程兵第四设计研究院;
【基金】：国家自然科学基金项目(60971063) 国家重点实验室基金项目(FD2015003)
【分类号】：V275.1
，
本文编号：2145184
[Abstract]:In this paper, a numerical simulation method based on the theory of streamer and pilot discharge is proposed to quickly determine the initial lightning attachment point of the helicopter. Firstly, according to the relevant test methods specified in standard SAE-ARP 5416A, the parameters such as the size of the plate electrode and the distance from the helicopter to the boundary are determined. Then, the main rotor tip, tail rotor tip, horizontal tail wing and nose position of the UH-60 "Black Hawk" helicopter are analyzed and compared by using the Becerra-Cooray positive lead initiation and development criterion. Finally, by changing the potential of the plate electrode continuously, the minimum background electric field value needed to produce the stable positive leader at each key position is found, based on which the position of initial lightning strike attachment is analyzed. The results show that the wingtip of the main rotor is the most likely to be the initial lightning stroke attachment position, while the nose is more difficult to become the initial lightning strike attachment position.
【作者单位】： 解放军理工大学国防工程学院;解放军理工大学电磁环境与电光工程国家级重点实验室;总参工程兵第四设计研究院;
【基金】：国家自然科学基金项目(60971063) 国家重点实验室基金项目(FD2015003)
【分类号】：V275.1
，
本文编号：2145184
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