• 품질경영학회지
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• 제48권1호
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• pp.215-225
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• 2020

Purpose: The purpose of this study was to show current states of domestic Precision Guided Missile(PGM) by analyzing Live-fire test results using general methods to get the Confidence Levels. Methods: Live-fire test results were used to get Confidence Levels of PGM. The Confidence Levels were derived by two general methods. The first method was Binomial distribution and second was convergence of Hypergeometric distribution and Bayes' rule. Results: The results of this study are as follows; The more Live-fire tests of PGM are performed, the higher Confidence Level of PGM will be estimated. And the number of Live-fire tests are related to a unit price of PGM. This results means that the increase of live-fire test, which is useful data for preparation and evaluation of Development Tests / Operation Tests for PGMs, is only way to enhance the Confidence Levels of each PGMs. Conclusion: This study shows the relationship between the Live-fire tests and Confidence Levels of PGMs and it will be used on Live-fire Test & Evaluation of PGMs for reference.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2008년도 춘계학술논문발표회 논문집
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• pp.7-10
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• 2008

Heat release characteristics of live fire load are an important parameter for performance oriented fire safety design of a building. While investigations have been carried out on the fire load and its burning behavior in office, residential and commercial buildings and so on, little effort has been paid for the rational treatment of fire load in post office buildings in Japan. In this report, burning behavior of typical combustible objects in post office buildings are studied by measuring heat release rates of plastic palettes with and without postal envelopes or packages and special containers loading numbers of palettes. The test results suggest that dynamic heat release rate is highly dependent on the condition of palettes especially if they load appropriate amount of postal envelopes or not.

• 대한안전경영과학회지
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• 제17권3호
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• pp.195-204
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• 2015

The live fire test has been playing a critical role in evaluating the goals-to-meet of the weapon systems which utilize the power of explosives. As such, the successful development of the test systems therein is quite important. The test systems development covers that of ranges and facilities including system-level key components such as mission control, instrumentation or observation, safety control, electric power, launch pad, and so on. In addition, proper operational guidelines are needed with well-trained test and operation personnel. The emerging weapon systems to be deployed in future battle field would thus have to be more precise and dynamic, smarter, thereby requiring more elaboration. Furthermore, the safety consideration is becoming more serious due to the ever-increasing power of explosives. In such a situation, development of live fire test systems seems to be challenging. The objective of the paper is on how to incorporate the safety and other requirements in the development. To achieve the goal, an architectural approach is adopted by utilizing both the system components relationship and safety requirement when advanced instrumentation technology needs to be developed and deteriorated components of the range are replaced. As an evaluation method, it is studied how the level of maturity of the test systems development can be assessed particularly with the safety requirement considered. Based on the concepts of both systems engineering and SoS (System-of-Systems) engineering process, an enhanced model for the system readiness level is proposed by incorporating safety. The maturity model proposed would be helpful in assessing the maturity of safety-critical systems development whereas the costing model would provide a guide on how the reasonable test resource allocation plan can be made, which is based on the live fire test scenario of future complex weapon systems such as SoS.

• 한국군사과학기술학회지
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• 제25권3호
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• pp.259-266
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• 2022

This study aims to introduce missile live-fire during the ship operational test and evaluation(T&E) as a means of verifying the integrated combat capability(ICC) of various systems installed on naval ships. The research method identified domestic and foreign T&E systems and cases, and reports related to ICC, which were written during the ship's design stage. As a result of research, Republic of Korea is not conducting the missile live-fire at the ship T&E stage due to the lack of relevant systems, while the U.S. is conducting it based on the mission-based T&E and the end-to-end test system. As a way to improve within the current domestic ship acquisition systems, the reaction time analysis, a quantitative analysis result of ICC calculated at the ship basic design stage, was proposed to be verified by missile live-fire during ship operational T&E.

• 대한안전경영과학회지
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• 제17권1호
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• pp.75-84
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• 2015

Successful development of weapon systems requires a stringent verification and validation (V&V) process due to the nature of the weapons in which continual increase of operational capability makes the system requirements more complicated to meet. Thus, test and evaluation (T&E) of weapon systems is becoming more difficult. In such a situation, live fire tests appear to be effective and useful methods in not only carrying out V&V of the weapon systems under development, but also increasing the maturity of the end users operability of the system. However, during the process for live fire tests, a variety of accidents or mishaps can happen due to explosion, pyro, separation, and so on. As such, appropriate means to mitigate mishap possibilities should be provided and applied during the live fire tests. To study a way of how to accomplish it is the objective of this paper. To do so, top-level sources of hazard are first identified. A framework for T&E is also described. Then, to enhance the test range safety, it is discussed how test scenarios can be generated. The proposed method is based on the use of the anticipatory failure determination (AFD) and multiple event tree analysis (ETA) in analyzing range safety. It is intended to identify unexpected hazard components even in the environment with constraints. It is therefore expected to reduce accident possibilities as an alternative to the traditional root-cause analysis.

• 한국산학기술학회논문지
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• 제20권9호
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• pp.488-494
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• 2019

양산되어 군에 전력화되는 정밀 유도무기의 경우, 장기 저장된 이후 사격시험을 수행함으로써 최종 성능을 확인할 수 있는 특성을 가지고 있다. 현재 군에서 운용되고 있는 ${\bigcirc}{\bigcirc}$ 유도무기 또한 군 전력화 이후 실사격 시험을 통하여 유도무기의 성능 및 신뢰도를 지속적으로 확인하고 있다. 특히, '00년 군 주관 실 사격시험에서는 유도무기 발사관 전방덮개조립체 구성품인 '링, 지지용'이 유도무기가 발사되는 과정에서 추진 날개에 걸려 함께 이탈한 결과가 확인되었고, 이는 추진 날개 전개를 방해하여 유도무기 비행 성능에 영향을 주었다. 이 결과를 기반으로 기존 실 사격시험을 성공한 유도무기 발사관을 조사한 결과, '링, 지지용'의 발사관 이격 현상이 확인되어 '링, 지지용' 이격/이탈 현상에 대한 근본적인 해결 방안 수립 필요성을 인지하게 되었다. 본 연구는 실 사격시험 결과로부터 도출된 유도무기 발사성능 개선사항을 제시하고, 이를 ${\bigcirc}{\bigcirc}$ 유도무기에 적용하여 최종적인 발사성능 개선 효과 및 시험결과를 소개한다.

• 대한안전경영과학회지
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• 제16권2호
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• pp.43-52
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• 2014

In weapon systems development, live fire tests have been frequently adopted to evaluate the performance of the systems under development. Therefore, it is necessary to ensure safety in the test ranges where the live fire tests can cause serious hazards. During the tests, a special care must be taken to protect the test and evaluation (T&E) personnel and also test assets from potential danger and hazards. Thus, the development and management of the range safety process is quite important in the tests of guided missiles and artillery considering the explosive power of the destruction. Note also that with a newly evolving era of weapon systems such as laser, EMP and non-lethal weapons, the test procedure for such systems is very complex. Therefore, keeping the safety level in the test ranges is getting more difficult due to the increased unpredictability for unknown hazards. The objective of this paper is to study on how to enhance the safety in the test ranges. To do so, an approach is proposed based on model-based systems engineering (MBSE). Specifically, a functional architecture is derived utilizing the MBSE method for the design of the range safety process under the condition that the derived architecture must satisfy both the complex test situation and the safety requirements. The architecture developed in the paper has also been investigated by simulation using a computer-aided systems engineering tool. The systematic application of this study in weapon live tests is expected to reduce unexpected hazards and test design time. Our approach is intended to be a trial to get closer to the recent theme in T&E community, "Testing at the speed of stakeholder's need and rapid requirement for rapid acquisition."

• 한국산학기술학회논문지
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• 제17권12호
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• pp.193-197
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• 2016

현재 국내 유도무기 사격시험의 경우, 유도무기 사격 수량 대비 명중 수량으로 계산된 명중률만을 이용하여 국내 유도무기의 성능을 판단하고 있다. 명중률만으로는 생산된 유도무기 전체의 특성을 표현하지 못하므로 유도무기 사격시험결과에 따라 계산된 명중률을 활용하여 생산된 모든 유도무기의 성능을 판단하기에는 한계가 있다. 다시 말하면, 전력화되어 운용 중인 유도무기 또는 생산중인 유도무기의 명중률을 일정 수준 보장하기 위해서는 유도무기 사격시험 결과에 따라 계산된 단순 명중률보다 신뢰성이 높은 신뢰수준을 산정하는 것이 필요하다. 이에 따라 본 연구에서는 생산 수량이 적고, 고가이며, 유도무기 사격 시험을 수행하기 전에 유도무기 명중 여부 및 성능을 확인할 수 없는 유도무기 사업 특성을 고려하고, 유도무기 사업 특성에 적합한 초기하분포와 베이지안 규칙을 활용하여 최소 사격 수량으로 유도무기 신뢰수준을 산정하는 방법을 소개한다. 또한, 국내 유도무기 사격시험 결과 및 국내외 문헌을 활용하여 국내 유도무기 사격 시험 결과 판정 시 유도무기 성능을 확인할 수 있는 적정 신뢰수준을 제안한다.

• 한국군사과학기술학회지
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• 제15권1호
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• pp.28-35
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• 2012

We propose the live fire test process model based on systems engineering which consists of 4 phases i.e., review, setup, conduct and result. We also suggest the 4 phases acquisition model consisting of planning, execution, evaluation and disposal for test infrastructure. CMMI, TMMi and PMBOK are referred and hierarchial analysis method are adopted in developing the models. Thus, the detailed sub-processes are designed after defining higher level processes first. The higher level processes are defined by extracting common areas of all the test types. The low level processes for each specific test are designed by tailoring the higher level processes. By applying the proposed test process models into collaboration tool and information system, effective and systematic test processes for weapon systems are established.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2005년도 춘계학술대회
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• pp.453-459
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• 2005

On this research, we show some concrete examples as software design, 2D/3D display, graph display, and gage display to develop a data monitoring system for real time safe fire testing. Developed software which is simulation software for live fire testing, has been designed to display informations about whole test status in a live fire testing, and with this, user can control a live fire testing under the safe environment. Beside, we increase a security by using a authority of user to access on this software. and we develop it based on module designed to apply a requirement of user later on.