• Title/Summary/Keyword: 전자식 안전 장전 장치

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Development of ESAD with Flight Environment Sensing Function and Sled Test Method for Function Verification (비행환경 감지 기능을 보유한 ESAD 개발 및 기능 확인을 위한 슬레드 시험 방안)

  • Hanseong Jo
    • Journal of the Korea Institute of Military Science and Technology
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    • v.26 no.3
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    • pp.273-280
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    • 2023
  • Recently electronic safety and arming device(ESAD) has attracted increasing attention due to its design flexibility. However, ESAD can be armed unintentionally due to a malfunction of an external device or interface. Thus ESAD needs an internally generated arming signal independent from the external device. In this paper, a new sensor-hybrid ESAD(SHESAD) with a flight environment sensing function for generating arming signal internally is proposed and a sled test based method is also suggested for evaluating its functions. Through the test results, the operability of the flight environment sensing function was confirmed. Also, it is shown that the proposed test method is suitable for verification of ESAD with the flight environment sensing function.

A Study on the Impact Sensing Device for Improving the Firing Function Reliability of ESAF (ESAF의 기폭 신뢰성 향상을 위한 충격감지장치 연구)

  • Jo, Seyoung
    • Journal of the Korea Institute of Military Science and Technology
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    • v.18 no.5
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    • pp.525-531
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    • 2015
  • In this paper, a novel impact sensing device for an ESAF(Electronic Safe and Arming Fuze) is presented. An impact sensing device is mounted in front of a weapon, and it detects an impact when it crashes against a target. There are two main design requirements to enhance the firing functional reliability of the ESAF; an operational reliability and a reduced latency, which is a delay time needed for sensing the impact. The design method of the contact-type impact sensing device, which employs an FPCB(Flexible Printed Circuit Board) so it can be used other weapons, is proposed. The tests demonstrated that the design described in this work show a reduced delay time with ensuring the operational reliability.

Measurement-based LEEFI Modeling and Experimental Verification for Predicting Firing Waveform of an ESAD (ESAD의 기폭 파형 예측을 위한 측정기반 LEEFI 모델링 및 검증)

  • Kang, Hyungmin;Kim, Joungho;Hwang, Sukhyun;Jung, Myung-suk;Jo, Seyoung;Son, Joongtak
    • Journal of the Korea Institute of Military Science and Technology
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    • v.22 no.1
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    • pp.20-26
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    • 2019
  • In this paper, we propose measurement based numerical resistivity model for low energy exploding foil initiator (LEEFI) of electronic safety and arming device(ESAD). A resistivity model describes a behavior of variable resistance in LEEFI by firing current. The previous resistivity model was based on high energy detonator applications as explosive bridge wire and exploding foil initiator. Therefore, to estimate the voltage, current, and burst time of LEEFI, a resistivity model suitable for LEEFI is needed. For the modeling of resistivity of LEEFI, we propose a specific action based equation which represents a behavior of LEEFI when firing current is applied. To verify the proposed model, we analyze a firing current transmission path to obtain parasitic impedance. We experimentally verify that the proposed resistivity model offers precise estimation for the behavior of variable resistance in LEEFI.