Measuring Projectile Velocity using Shock Wave Pressure Sensors

Padhy, Sankarsan; Panigrahi, Susmita

doi:10.14429/dsj.64.8108

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…Though PDV technology is relatively easy-to-use, its efficiency is limited due to the opacity of the gaseous medium in the barrel due to the generation of the shock front in the gun bore. 7 Shock Wave Pressure Sensors 11 are useful for measuring projectile velocity outside the barrel.…”

Section: Introductionmentioning

confidence: 99%

Strain gauge-based method to determine in-cylinder projectile velocity and gas pressure

Vattaparambil Sreedharan,

Tiwari,

Mathur

et al. 2023

The Journal of Strain Analysis for Engineering Design

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Knowledge of internal ballistic pressure and projectile velocity is required to ensure gun safety, reliability, calculation of its range, and evaluation of ammunition. However, existing methods for determining the same are either overly complex, costly or have limitations in their applicability. In this work, the authors address this need by proposing a reliable, simple, cheap, and non-destructive method for determining in-bore pressure, projectile velocity, and acceleration profile using strain measurements. Data from strain gauges were used to detect the projectile’s arrival time at different locations in the barrel and computed projectile velocity and acceleration as a function of projectile position. Finally, acceleration data was used to calculate the pressure behind the projectile. Results were verified using alternative experimental and simulation techniques on two different barrels with different ammunition. It was found that the proposed method works well and thus can be reliably used in similar applications elsewhere.

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Section: Introductionmentioning

confidence: 99%

Strain gauge-based method to determine in-cylinder projectile velocity and gas pressure

Vattaparambil Sreedharan,

Tiwari,

Mathur

et al. 2023

The Journal of Strain Analysis for Engineering Design

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“…Therefore, research on the measuring method of the projectile's velocity and how to improve the measuring accuracy of the projectile's velocity have always been the key contents in the field of the weapon's performance evaluation [5][6][7]. At present, the measuring methods of the projectile's velocity are mainly to use interval velocity measuring devices [8][9][10][11]. The laser screen velocity measuring (LSVM) system is a typical interval velocity measuring device.…”

Section: Introductionmentioning

confidence: 99%

Research on Target Deviation Measurement of Projectile Based on Shadow Imaging Method in Laser Screen Velocity Measuring System

Chu

Zhao

Liu

et al. 2020

Sensors

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In the laser screen velocity measuring (LSVM) system, there is a deviation in the consistency of the optoelectronic response between the start light screen and the stop light screen. When the projectile passes through the light screen, the projectile’s over-target position, at which the timing pulse of the LSVM system is triggered, deviates from the actual position of the light screen (i.e., the target deviation). Therefore, it brings errors to the measurement of the projectile’s velocity, which has become a bottleneck, affecting the construction of a higher precision optoelectronic velocity measuring system. To solve this problem, this paper proposes a method based on high-speed shadow imaging to measure the projectile’s target deviation, ΔS, when the LSVM system triggers the timing pulse. The infrared pulse laser is collimated by the combination of the aspherical lens to form a parallel laser source that is used as the light source of the system. When the projectile passes through the light screen, the projectile’s over-target signal is processed by the specially designed trigger circuit. It uses the rising and falling edges of this signal to trigger the camera and pulsed laser source, respectively, to ensure that the projectile’s over-target image is adequately exposed. By capturing the images of the light screen of the LSVM system and the over-target projectile separately, this method of image edge detection was used to calculate the target deviation, and this value was used to correct the target distance of the LSVM to improve the accuracy of the measurement of the projectile’s velocity.

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Measurement of “Shock Wave Parameters” in a Novel Table-Top Shock Tube Using Microphones

Sivakumar

Balachandar²,

Dhas

2020

Hum Factors Mech Eng Def Saf

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Measuring Projectile Velocity using Shock Wave Pressure Sensors

Cited by 6 publications

References 2 publications

Strain gauge-based method to determine in-cylinder projectile velocity and gas pressure

Strain gauge-based method to determine in-cylinder projectile velocity and gas pressure

Research on Target Deviation Measurement of Projectile Based on Shadow Imaging Method in Laser Screen Velocity Measuring System

Measurement of “Shock Wave Parameters” in a Novel Table-Top Shock Tube Using Microphones

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