西安电子科技大学学报（自然科学版）2018，Vol.45Issue(3)：40-44,162,6.DOI:10.3969/j.issn.1001-2400.2018.03.008
超高速飞行器气动外形对电波传播特性的影响
Influence of the aerodynamic shape of a hypersonic vehicle on characteristics of EM wave propagation
摘要
Abstract
The plasma sheath surrounding a hypersonic vehicle will have a severe interference on the wireless communication signals and even interrupt the signals,threatening the flight safety.The plasma sheath is closely related to the vehicle's shape which indirectly affects the propagation characteristics of the radio waves.For understanding the influence of different aerodynamic shapes on the wave propagation,the EM wave propagation in the plasma sheath produced by aircraft,including blunt and pointed cone,is investigated.First,the commercial software COMSOL is used to calculate the flow field distribution under different flight conditions,generating the discrete model of plasma sheath.Then,according to the wave propagation theory in the plasma and using the Lagrange and Runge-Kutta methods,ray equations in the plasma sheath are solved numerically, which results in observing some new characteristics of wave propagation,such as waveguide behavior. The results show that, under the same conditions, the interference caused by the blunt vehicle is stronger than that by the pointed vehicle.These results can provide references for the design of hypervelocity aircraft,and further promote the study of related issues.关键词
电波传播特性/气动外形/等离子体鞘套Key words
characteristics of EM wave propagation/aerodynamic shape/plasma sheath分类
信息技术与安全科学引用本文复制引用
杨鑫,魏兵,尹伟科,谭畅..超高速飞行器气动外形对电波传播特性的影响[J].西安电子科技大学学报（自然科学版）,2018,45(3):40-44,162,6.基金项目
国家自然科学基金资助项目(61231003,61401344,61571348,11475131) （61231003,61401344,61571348,11475131）
