• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.332-337
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• 2018

Aircraft searchlights are used in search or rescue missions when performing night missions, and provide infrared light to keep operations in concealment. During aircraft operation, the infrared ray transmission filter glass for generating infrared rays can break, resulting in problems such as loss of concealment ability and maintenance. In this paper, we describe the procedure for testing the operating conditions of the searchlight when the defect occurs and finding the cause of the defect. We also summarize various methods to improve the cause and process of making the improved filter prototype. In addition, we also describe the results of verifying the performance requirements of the searchlight. As a result of the test and verification, the damage of the filter was improved and the improved filter was applied to the aircraft.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.5
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• pp.49-54
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• 2011

Case-based reasoning is an efficient method to find solutions for new problems by using past cases after appropriate changes. It is widely used in everyday life because it resembles the way human acts. In this paper, we propose a military system that generates the most appropriate tactics for CGF (Computer Generated Forces) by utilizing past practices. It indeed applies case-based reasoning at the process of armed conflict. When the CGF squad on a mission, they will be given an action plan to reach the final goal. In the process of executing, tactics for specific action should be organized such as attacks, ambushes, and tactical moves. By using the proposed method, tactics were generated by case-based reasoning. The proposed system successfully receives input through each command and control agent, measures the degree of similarity with the case in case DB, selects the most similar case, modifies, uses, and then stores it for next time.

• Journal of the Korea Society for Simulation
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• v.17 no.1
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• pp.23-32
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• 2008

In this paper, we discuss the current status of ROK-US wargame model interoperability and propose the future federation architecture. ROK and US Armed Forces have made an effort to make their wargame model interoperable to fulfill operational requirements since 1999. Currently, they have achieved some degree of their final goals even though there is long way to go. ROK Armed Forces is now considering future federation architecture. We propose the future federation architecture of ROK-US wargame model interoperability considering technical advantages and system availability. It will be the next federation architecture led by ROK side for the ROK Armed Forces joint exercise and ROK-US combined exercise.

• Journal of the Korea Society for Simulation
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• v.24 no.4
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• pp.23-28
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• 2015

The detection field is an important sector of the factors influencing the battle field. Basically, The radar emits a radio wave to perform the detection in the existing way. However, When most existing radars identify target by signal processing to return radio wave, Environmental attenuation factor does not reflected. The radar using this radio wave has got the possibility changing detect result depending on attenuation factor by environmental conditions, The operational problems may arise in a real battle field. Therefore, In this paper, When emitted radio waves were come back, Reflecting the environmental attenuation factor, Experimental attempts to identify the target to enable more accurately.

• Convergence Security Journal
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• v.19 no.1
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• pp.31-40
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• 2019

Today, information security (INFOSEC) as a discipline is gaining more and more importance according to the emergence and extension of the cyberspace. Originated from Joint Doctrine for Information Operation (Joint Pub 3-13) by the U.S. Department of Defense, 'information assurance (IA)' is the concept widely used in the relevant field. Grown from the practice of information security, it encompasses broader and more proactive protection that includes countermeasures and repair, security management throughout an information system (IS)'s life-cycle, and trustworthiness of an IS in the process of risk analysis. In Korea, many industry professionals tend to misunderstand IA, remaining unaware of the conceptual differences between IA and INFOSEC. On this account, the current study attempted to provide a combined definition of IA by reviewing relevant literature. This study showed the validity of the wordings used in the proposed definition phrase by phrase.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.337-339
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• 2011

M&S 기반의 가상환경 설계운영은 자원절약 및 위험성 감소 등 다양한 측면에서 효율성을 지니고 있다. 국방은 현실세계에서 실시하기 어려운 군사작전 시뮬레이션 운영을 위해 국방 M&S 개념을 도입하고, 이를 기반으로 무기체계의 소요도출부터 전력화 단계까지 프로세스 전반에 걸쳐 가상 환경에서의 설계 운영 및 검증을 수행하는 SBA 를 도입하였다. 그러나 모델링 및 시뮬레이션 과정에서 발생되는 고비용, 위험성 등의 문제점은 SBA 도입 효율성에 대한 논란의 요인이 된다. 따라서 SBA 도입 효과를 입증할 수 있는 지표 제시가 요구되며, 이 연구에서는 입증 지표로서 비용, 시간, 품질 및 위험도의 4 가지 요소를 분석한다. 또한 소프트웨어 개발비용 산정의 어려움 및 SBA의 고비용 가능성을 이유로 SBA 에 대한 개발비용 산정의 필요성을 제기한다. SBA 개발비용 산정을 위해 기존에 제시된 소프트웨어 개발비용 산정 모델 적용을 제안하고, COCOMO 모델, Putnam 모델, FP모델, 전문가의 감정 및 델파이 기법 등 소프트웨어 개발비용 산정모델을 기반으로 SBA 개발비용 산정에 적합한 모델을 분석한다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.45 no.6
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• pp.490-497
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• 2017

The Main Landing Gear(MLG) of Rotary Wing Aircraft is an essential equipment in Landing System for pilot to perform a flight mission. It supports the fuselage at ground and absorbs the impact from the ground when landing, thereby, these functions sustain operational capability for pilot and crew. However, the A aircraft caused asymmetry and leakage hydraulic when it was stationed on the ground. Therefore, this paper summarizes pilot comments in operation which are classified by cause of occurrence and the troubleshooting process about each comment. It also describes design improvements which was derived from troubleshooting and suggests verification results of flight test.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.35 no.8
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• pp.971-976
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• 2011

This paper presents the design concepts of a protector for a launch-reconnaissance robot that is to be deployed for data-collection in hazardous regions. The protector protects the reconnaissance robot inside from shock induced during the process of launch, flight, and landing. Since the outer shells of the protector are automatically opened wide by the unlocking mechanism during the landing stage, the reconnaissance robot can easily exit the protector and move around to carry out its mission. We carefully simulated a finite-element model of the protector with the robot and compared the results with the actual dynamic behavior of the system. Shock- response tests using a droptable showed that the proposed protector filled with silicon material successfully attenuated external shock.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.3
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• pp.453-459
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• 2020

It is important to increase the probability that all developed weapon systems can be operated in a steady state at any time. In the case of Integrated Logistics Support, this probability is referred to as operational availability, and the numerical value is quantified during the development process. There are several ways to improve operational availability for successful development of weapon systems. One of the methods is to reduce total corrective maintenance time through Automatic Test Equipment(ATE). Recently, customers in the defense market have become aware of this and demand ways to improve operational availability of weapon systems. Therefore, this paper proposes ways to improve operational availability of weapon systems by changing the method of operating the ATE. The detailed method is to allow field maintenance personnel to carry out field maintenance support onsite. This is an effective way to reduce the total corrective maintenance time of weapon systems by reducing the travel time of field maintenance personnel. The proposed ATE is proved to be able to achieve superior maintenance and operational availability.

• Maritime Security
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• v.7 no.1
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• pp.61-96
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• 2023

Amidst the ongoing instability and military tensions between North and South Korea, it is essential for us to comprehend and assess North Korea's military capabilities, while preparing for potential contingencies through military reinforcement. However, to conduct a comprehensive analysis of the military balance on the Korean Peninsula, it is imperative to move beyond simplistic quantitative comparisons of combat capabilities and embrace a broader perspective, which includes qualitative comparisons of military strength, operational capabilities, and a nation's ability to wage war. To address this need, this study employs the method of "Net Assessment" to evaluate the relative combat power of South and North Korean conventional naval forces, with a particular focus on surface combatants. This evaluation involves both quantitative and qualitative comparisons of military assets (personnel and equipment) and intangible factors (naval strategies, geography, etc.). By conducting a holistic assessment, the research aims to identify and analyze strategic asymmetries that may exist between the two navies.