诊断介质阻挡放电激励的空气密度扰动  

Diagnosis of Air Density Harassment

作　　者：周章文[1] 刘展[1] 孙冬[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038

出　　处：《吉首大学学报（自然科学版）》2011年第5期62-64,74,共4页Journal of Jishou University(Natural Sciences Edition)

摘　　要：利用激光在空气密度梯度场中的偏转(折射)效应,设计了激光偏转诊断系统,并诊断航空等离子体激励器诱导空气在其附近的密度变化.实验结果显示:激励器两电极之间靠近上电极附近空气密度扰动达到负最大值(-1.7%),而靠近下电极处空气密度略有增加(+0.27%).实验结果与其他手段的诊断结果一致,但激光偏转系统能更快速有效地诊断诱导的空气密度扰动.By the laser beam deflection effect in air density gradient field, the laser deflection diagnosis system was designed, and the air density change dused by the aeronautical plasma actuators was diagnosed. The results showed that the air density decreased by - 1.7% in the vicinity of the upper electrode＇s edge between two electrodes, and increased by 0. 27% in the vicinity of the lower electrode＇s edge between two electrodes. The measurement results were consistent with the results of other means. But the diagnosis of the laser deflection system is faster and more effective.

关 键 词：激光偏转系统 空气密度 扰动 折射率 

分 类 号：TN744.3[电子电信—电路与系统]