• KIISE Transactions on Computing Practices
• /
• v.21 no.7
• /
• pp.443-451
• /
• 2015

This paper proposes a signal modelling method that can effectively detect the shock wave(SW) sound and muzzle blast(MB) sound from the gunshot of a small arm rifle. In order to localize a counter sniper in battlefield, an accurate detection of both shock wave sound and muzzle blast sound are the necessary keys in estimating the direction and the distance of the counter sniper. To verify the performance of the proposed algorithm, a real gunshot sound in a domestic military shooting range was recorded and analyzed. From the experimental results, the proposed signal modelling method was found to be superior to the comparative system more than 20% in a shock wave detection and 5% in a muzzle blast detection, respectively.

• Defense and Technology
• /
• no.3 s.265
• /
• pp.44-51
• /
• 2001

보병화기의 전투효율성 향상을 위해 세계 각국은 소총에서 구경축소, 경량화, 체계화 등 꾸준한 개량발전을 시도하여 왔으나 실제 전투상황하에서의 명중률 증대측면에서는 결정적인 개선을 가져오지 못했다고 평가하고, 소총의 기본 설계개념과 세계 각국의 차기소총 개발현황 및 발전추세에 대하여 개괄적으로 고찰해 보았다. 따라서 이와 함께 현용 K-1A 기관단총, K-2 소총의 Life Cycle(20-30년)을 고려할 때 2000년대 초에는 차기소총의 대체 필요성을 제시하고자 한다.

• Defense and Technology
• /
• no.4 s.266
• /
• pp.44-51
• /
• 2001

보병화기의 전투효율성 향상을 위해 세계 각국은 소총에서 구경축소, 경량화, 체계화 등 꾸준한 개량발전을 시도하여 왔으나 실제 전투상황하에서의 명중률 증대측면에서는 결정적인 개선을 가져오지 못했다고 평가하고, 소총의 기본 설계개념과 세계 각국의 차기소총 개발현황 및 발전추세에 대하여 개괄적으로 고찰해 보았다. 따라서 이와 함께 현용 K-1A 기관단총, K-2 소총의 Life Cycle(20-30년)을 고려할 때 2000년대 초에는 차기소총의 대체 필요성을 제시하고자 한다.

• The Journal of the Acoustical Society of Korea
• /
• v.37 no.4
• /
• pp.206-214
• /
• 2018

This paper proposes an impact point estimation algorithm of the rifle using microphone sensors. The proposed algorithm resolves the time synchronization problem by expanding the existing ToA (Time of Arrival) method to TDoA (Time Difference of Arrival) method and verifies the performance of the algorithm through the actual shooting experiments. By comparing analysis of the actual and the estimated impact points by the algorithm, it is confirmed that the proposed algorithm has excellent performance by estimating the impact point accurately within the tolerance range.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.21 no.6
• /
• pp.584-591
• /
• 2020

Reliability is an important factor in weapons systems. Low reliability causes the weapons system to fail to function properly, which directly leads to the weakening of combat capability. This paper classifies the structure of the 5.56 mm rifle, which is currently used by the Korean army, into a total of seven assemblies and describes the eight functions necessary for the rifle to operate normally. In addition, the concept of reliability was defined as the MRBF, and the Poisson process model and TTT plot were explained as a reliability analysis theory for the repair function system. Next, the field-data obtained by defining failure as the replacement of parts other than periodic exchange of parts were refined, and the reliability was analyzed by entering the refined field operation specifications into the Minitab program. As a result, the reliability of the rifle was determined to be 251.73. The assembly parts that required improvement was identified as the barrel, lower body, and butt stock assembly, and 10 detailed parts needed to be improved. Finally, the limits of the reliability analysis using the field-data currently available for small caliber firearms were considered.

• The Korean Journal of Applied Statistics
• /
• v.32 no.1
• /
• pp.129-138
• /
• 2019

Ammunition is an integral element of a weapon systems and in calculating fighting strength. The Korea Army utilizes the basic load (B/L) concept to supply ammunition smoothly. The required supply rate (RSR) is the basis of a B/L that is estimated from real combat data that includes a troop's mission and operation terrain. The current RSR is based on Korean War data and the sample mean has some problems in applications to modern combat. Therefore, this study used Korea Combat Training Center (KCTC) data that is similar to real combat to estimate rifle ammunition RSR. We used a quantile of truncated Weibull distribution to estimate rifle ammunition RSR considering that rifle ammunition consumption data in KCTC is truncated. As a result, we obtained a rifle ammunition RSR which covers most ammunition consumption by reflecting the individual consumption of rifle ammunition.

• Proceedings of the KSME Conference
• /
• 2004.04a
• /
• pp.722-727
• /
• 2004

This paper includes the comparative study between Cr plating and nitriding process with an aim at improving corrosion, wear and maintainability for KNR(Korean Next Generation Rifle) 5.56mm barrel. The endurance test was conducted to compare the performance of standard barrel, Cr plating barrel and nitriding barrel. Main activities are described as follows; optimal Cr plating and nitriding process set-up for KNR 5.56mm barrel; durability test of each barrel(20,000 rounds); salt water immersion test; dispersion, initial velocity, inner diameter data acquisition. According to the results of this firing test, Cr plating barrel is superior to standard barrel and nitriding barrel in view of corrosion, wear and maintainability