Measuring Projectile Velocity using Shock Wave Pressure Sensors

  • Sankarsan Padhy Proof and Experimental Establishment, DRDO, Chandipur
  • Susmita Panigrahi Proof and Experimental Establishment, DRDO, Chandipur
Keywords: Shock wave, piezo-electric sensors, velocity measurement


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:

Author Biographies

Sankarsan Padhy, Proof and Experimental Establishment, DRDO, Chandipur
Mr S. Padhy is presently working as a scientist in DRDO, PXE, Chandipur. He completed his MTech in Radio Frequency Design Technology from Indian Institute of Technology (IIT) Delhi. He is a life member of IETE and Society of EMC engineers. His area of interest includes radar cross section (RCS) prediction and measurement of different targets, RCS reduction by applying radar absorbing materials, ballistic instrumentation and radar signal processing. He has received silicon and titanium medals from DRDO in 2004 and 2010, respectively. He was awarded Laboratory Scientist of the Y Year Award in 2012.
Susmita Panigrahi, Proof and Experimental Establishment, DRDO, Chandipur
Ms Susmita Panigrahi obtained her diploma in Electronics & Telecommunication Engineering from Women’s Polytechnic, Bhubaneswar in 1992. She joined PXE, Chandipur in 1994. She has more than 20 years of experience in the field of Doppler radars, acoustics and piezo-electric based instrumentation setups.
How to Cite
Padhy, S., & Panigrahi, S. (2014). Measuring Projectile Velocity using Shock Wave Pressure Sensors. Defence Science Journal, 64(6), 499-501.
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