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《Journal of Ordnance Equipment Engineering》 2018-06
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Reasearch on the Influence of Magnet Polar Arrangement of Sensing Speed on Speed Accuracy

ZHANG Minghong;SUN Hao;Anhui Dongfeng Mechanical and Electrical Technology Co.,Ltd.;Institute of Mechanical Engineering,Nanjing University of Technology;  
With that the airborne ammunition on the explosive point accuracy requirements are getting higher and higher,more and more ammunition using the nozzle tube velocity measurement method to reduce the ammunition speed fluctuations on the impact of the accuracy of the bombing. In this paper,Ansoft Maxwell software is used to simulate the different polarities of magnets,and different induction velocity waveforms are obtained. The influence of different induction waveforms on the accuracy of induction velocity is analyzed,which provides designers with the arrangement of magnet polarity. Using this simulation result for design,when the magnetism is arranged along the axis NS-NS,the airburst accuracy of the rocket at 380 m is increased from ± 12 m to ± 5 m( longitudinal) by the speed test,the error of 5 m precision is less than the effective kill radius of the projectile( 7 m),which proves the feasibility of this method.
【CateGory Index】: TJ410
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