Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Analysis of Probability Distribution of Muzzle Velocity for Chrome Plated Barrel

크롬도금 포열의 포구속도 확률분포 특성 분석

  • Kim, Jaekab (The 5th Research and Development Institute, Agency for Defense Development) ;
  • Kim, Jaehoon (Department of Mechanical Engineering, Chungnam National University)
  • 김재갑 (국방과학연구소 제5기술연구본부) ;
  • 김재훈 (충남대학교 기계공학부)
  • Received : 2021.02.22
  • Accepted : 2021.06.04
  • Published : 2021.08.05
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Abstract

To confirm the change of muzzle velocity and the most suitable probability distribution model of the 155 mm K9 howitzer barrel with chrome plating and changed rifling. Using a statistical program, the muzzle velocity were plotted on a normal distribution, a 2-parameter and 3-parameter Weibull distribution on a probability paper. Also, statistical parameters were estimated and muzzle velocity fitness test and probability of K676 charge were plotted. In both the chrome-plated with standard rifling and changed rifling for K9 barrel, the 2-parameter and 3-parameter Weibull distribution were skewed to the left compared to the normal distribution. It was confirmed that the muzzle velocity of the K9 barrel with chromium-plated is suitable for the normal distribution and 3-parameter Weibull distribution model.

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References

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