Computation and analysis of aero-optic imaging deviation of a blunt nosed aircraft with Mach number 0.5—3  

作　　者：XU Liang ZHAO Shiwei XUE Wei WANG Tao 

机构地区：[1]Tianjin Key Laboratory for Control Theory&Applications in Complicated Systems,School of Electrical Engineering and Automation,Tianjin University of Technology,Tianjin,300384,China [2]China Academy of Aerospace Science and Innovation,Beijing,100083,China [3]School of Intelligent Engineering,Sun Yat-sen University,Guangzhou,510275,China

出　　处：《Optoelectronics Letters》2023年第1期55-59,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61975151 and 61308120).

摘　　要：Aero-optic imaging is a kind of optical effect,which describes the imaging deviation on the imaging plane.In this paper,the effect of the change of Mach number of blunt aircraft on the aero-optic imaging deviation is studied.The imaging deviations of Mach number 0.5—3 are analyzed systematically.The results show that with the increase of Mach number,imaging deviation increases gradually,and the increase rate is gradually slow.Imaging deviation slope decreases gradually with the increase of Mach number,and gradually tends to be zero,suggesting that imaging deviation is not sensitive to the change of the larger Mach number.In other words,the Mach number of smaller changes can lead to larger imaging deviation.As the Mach number of the aircraft increases,the slope of the imaging offset tends to be closer and closer to 0.When the Mach number of the aircraft increases to a certain extent,the change of the imaging offset will not have much influence.Therefore,in order to reduce the impact of flight speed on imaging migration,the aircraft should fly at a higher Mach number.

关 键 词：deviation CLOSER NUMBER 

分 类 号：V275.3[航空宇航科学与技术—飞行器设计]