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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Inertial Igniter of Small Thermal Batteries for Artillery Munitions

포탄용 소형 열전지의 관성식 착화장치

  • Sehwan Song (Department of Mechanical Engineering, Inha University) ;
  • Youlim Lee (Department of Mechanical Engineering, Inha University) ;
  • Hyun-Jun Kim (R&D Center, Vitzromiltech) ;
  • Sang-Hee Yoon (Department of Mechanical Engineering, Inha University)
  • 송세환 (인하대학교 기계공학과) ;
  • 이유림 (인하대학교 기계공학과) ;
  • 김현준 (비츠로밀텍 연구1본부) ;
  • 윤상희 (인하대학교 기계공학과)
  • Received : 2024.09.12
  • Accepted : 2024.12.27
  • Published : 2025.02.05
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Abstract

This paper presents a simple-structured inertial igniter for thermal batteries of gun-fired munitions, where the setback acceleration generated by gun firing is employed to activate the thermal batteries. The inertial igniter, composed of a ring-shaped slider supported by a spring, a striker held by locking balls, a percussion primer, and a housing, provides striking action (to the percussion primer) for thermal battery activation only when the setback acceleration time profile satisfies the predetermined threshold, thus preventing accidental ignition. A theoretical analysis and an ANSYS dynamic analysis were conducted to estimate the dynamic behavior of an inertial igniter under setback acceleration, thereby informing the design of the inertial igniter. The efficacy of our design methodologies was fully validated through shock tests for the inertial igniter. While both methods yielded reliable estimations, the theoretical analysis-based method proved to be more efficient in terms of calculation time and effort than the simulation-based one.

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Acknowledgement

이 논문은 2022년도 정부(방위사업청)의 재원으로 국방기술진흥연구소의 지원을 받아 수행된 연구임 (No. KRIT-CT-22-031, 유도포탄용 관성활성식 소형 열전지(시험개발))

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