直升机雷电电磁环境仿真分析

为了提高直升机对雷电的防护能力,根据标准SAE-ARP5416A规定的试验方法,使用COMSOL软件中对某直升机简化模型注入雷电流A波,由此来分析其遭受雷击时机舱内外的电磁环境.分析了直升机机体上的开孔对舱室内部电磁场分布的影响.仿真结果表明,雷电电流在机身上存在不均匀分布现象.电场强度和磁场强度随着空间位置与雷电路径...

Simulation Analysis of Helicopter Lightning Electromagnetic Environment

In order to improve the helicopter ''s lightning protection capability , according to the testmethod specified in standard SAE-ARP5416A, a simplified model of a helicopter is injected withlightning current A wave in COMSOL, software to analyze the electromagnetic environment insideand outside the cabin when it is struck by lightning. The influence of the opening in the helicopterbody on the electromagnetic field distribution in the cabin is also analyzed. The simulation resultsshow that the lightning current is unevenly distributed on the fuselage. The electric field strength andmagnetic field strength decrease with the increase of the distance between the space position and thelightning path, The fuselage is of metal structure and has certain shielding effect on electromagneticfield , but the shielding, performance of the whole metal cabin could be reduced due to the glass opening of the nose. ''The simulation results can effectively analyze the indirect effects of lightning strikeon helicopter , thus guiding the lightning protection design of helicopters.