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A Study on K2 Rifle Recoil Measurement and Analysis for Virtual Reality Marksmanship

가상현실 사격훈련을 위한 탄종별 K2 소화기의 주퇴산출 및 분석 연구

  • Kim, Jong-Hwan (Mechanical and Systems Engineering, Korea Military Academy) ;
  • Jin, Youngho (4th R&D Institute, Agency for Defense Development) ;
  • Kwak, Yunki (Combatant Support System Research Center, DTAQ)
  • 김종환 (육군사관학교 기계.시스템공학과) ;
  • 진영호 (국방과학연구소 4본부) ;
  • 곽윤기 (국방기술품질원 전력지원체계연구센터)
  • Received : 2019.02.25
  • Accepted : 2020.02.19
  • Published : 2020.03.31

Abstract

Purpose: The purpose of this study is to present a recoil measurement and analysis of K2 rifle for the development of a virtual reality marksmanship training in the Republic of Korea Army. Methods: For the recoil measurement, a test-bed is built by a barrel that has exact dimensions of K2 rifle and three piezoelectric pressure sensors mounted on the barrel. Data of over 200 rounds of 5.56mm M193 and K100 bullets are collected and analyzed from live fire experiments. For the recoil analysis, both the free recoil method and the gas exhaust aftereffect method are used to calculate a recoil velocity, momentum and kinetic energy of K2 rifle by applying the law of conservation of momentum. In addition, a new method is proposed that uses the third law of motion and the chamber pressure model for the recoil measurement Results: The results show how different between the previous and proposed methods with respect to M193 and K100 bullets of K2 rifle. In M193, the free recoil method demonstrates 1.113, 4.197, and 2.335, the gas exhaust aftereffect method computes 1.698, 6.407, and 5.441, and the proposed method calculates 0.990, 3.734, and 1.848 in recoil velocity, momentum and kinetic energy, respectively. In K100, the free recoil method demonstrates 1.190, 4.487, and 2.669, the gas exhaust aftereffect method computes 1.776, 6.699, and 5.949, and the proposed method calculates 1.060, 3.998, and 2.119 in recoil velocity, momentum and kinetic energy, respectively. Conclusion: This study implements live fire experiments to provide recoil velocity, momentum, and kinetic energy of K2 rifle using both M193 and K100 bullets. For the development of the army virtual reality marksmanship, the results in this paper would be useful to design and produce a gun and/or a rifle of virtual reality.

Keywords

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