An automatic fire extinguishing system is installed inside the hull of the K2 main battle tank to protect equipment and crew members in the event of a fire and to enable continuous combat operations. This system detects heat sources and visible light to identify fires and discharges an extinguishing agent within milliseconds. However, there have been concerns that direct contact between the extinguishing agent(HALON 1301) and the driver-particularly on the arms or sides-could result in cold burn-like injuries. To mitigate this risk, the nozzle design of the fire extinguisher was modified to minimize crew exposure. Through modeling simulations and live fire suppression tests, it was verified that the redesigned nozzle still provides effective fire suppression. This study contributes to improving crew safety and enhancing the operational reliability of military equipment while reducing the risk of personnel injury and resource loss due to safety incidents.

Abstract
1. 서 론
2. 본 론
    2.1 장비 소개 및 현실태
    2.2 개선 목 표
    2.3 유동 모 델링 시뮬레이션
    2.4 구조해석
    2.5 실화시험
3. 결 론
References

• 오은빈(Defense Agency for Technology and Quality) | Eunbin Oh Corresponding author
• 김윤곤(Defense Agency for Technology and Quality) | Yoongon Kim
• 권유나(Defense Agency for Technology and Quality) | Yuna Kwon
• 이하연(Hyundai-Rotem) | Hayeon Lee