Measuring Projectile Velocity using Shock Wave Pressure Sensors

Defence Science Journal

Susmita Panigrahi¹  Sankarsan Padhy¹ 

[1] Proof and Experimental Establishment, DRDO, Chandipur

关键词: Shock wave;    piezo-electric sensors;    velocity measurement;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

This paper deals with development of velocity measurement methodology based on projectile shock wave pressure measurements. The measurement principle is based on the fact that, whenever a projectile moves with supersonic velocity, shock wave fronts are produced along the trajectory of the projectile. Measurement configuration has been developed for measuring the shock wave pressure associated with projectile in flight, and hence, projectile velocity has been calculated. This paper covers various aspects of shock waves, generation of N Waves, feasibility study for capturing shock wave using dynamic microphone. Finally, suitable piezo-electric sensor has been selected and deployed in the trials and shock wave signature has been captured. From shock wave pressure, the projectile velocity has been computed. Defence Science Journal, Vol. 64, No. 6, November 2014, pp.499-501, DOI:http://dx.doi.org/10.14429/dsj.64.8108

【 授权许可】

Unknown