Measurement Method of Launch Caliber Expansion Deformation of Electromagnetic Railgun

doi:10.3969/j.issn.1000-1093.2013.10.005

Abstract

Abstract: During the electromagnetic launching process, the caliber of electromagnetic railgun may be expanded due to the electromagnetic force generated by the acute current. The caliber expansion has an effect on the repeated launch stability of the electromagnetic railgun. A novel high-speed linear array CCD measurement system was developed to detect this caliber expansion. The images obtained by the measurement system are analyzed using software methods. The results show that there is a linear relationship between caliber expansion and launching current, and the higher the launching current is, the larger the caliber expansion value is. The high-speed linear array CCD measurement system can measure the deformation of expanded caliber precisely in the sub-pixel dimension in a very short time.

Key words: ordnance science and technology, electromagnetic launch, caliber expansion, high speed linear array CCD, image segmentation

CLC Number:

TG156

WEN Yin-tang, WANG Hong-rui, ZHANG Yu-yan, WANG Zhen-chun, ZHAN Zai-ji, LIANG Bo. Measurement Method of Launch Caliber Expansion Deformation of Electromagnetic Railgun[J]. Acta Armamentarii, 2013, 34(10): 1227-1230.

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