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《Acta Armamentarii》 2007-01
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A Measuring Method for Velocity of Warhead Fragments

NI Jin-ping,YANG Lei(School of Opto-electronical Engineering,Xi'an Technologcial University,Xi'an 710032,Shaanxi,China)  
For measuring velocity and impacting position of single fragment of warhead,a non-contact measuring method was proposed,in which a six-light-screen array,a location identifying board,a multi-channel chronograph,and a computer are used.A principle of measurement is described.The key of the system is a light screen array sensor which consists of six light screens with a certain geometrical parameters.When the fragment flies through the light screen array,the time when it passes through each of the screens is recorded by the multi-channel chronograph.According to the time data and the geometrical parameters of the array,the velocity vector and the location can be calculated immediately.The method presented can be used to locate the fragment and to measure the velocity that is the real velocity on the fly orientation of fragment.It can be also used for measuring velocity of fragment group after further research on engineering.
【Fund】: 陕西省教育厅基金项目(03JC31);; 南京理工大学弹道国防科技重点实验室资助项目(51453010103SX0201)
【CateGory Index】: TJ760
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