• 한국중재학회지:중재연구
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• 제21권1호
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• pp.157-181
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• 2011

The term of defense procurement is used indifferently from defence acquisition. It consists of two sectors : domestic defense procurement and foreign defense procurement. For efficient and transparent defense procurement, Defence Acquisition Program Law in Korea suggests some principles including the purchase of domestically manufactured munitions in the first instance, and the Defense Acquisition Program Administration(DAPA)'s direct procurement of munitions, etc. By reviewing the characteristics, process, current situation and model contracts of defense procurement, it is found that domestic procurement contracts only propose the legal approach instead of arbitration and foreign procurement contracts suggest confusedly both the legal approach and arbitration for amicable disputes settlement. Therefore, it is quite recommended for arbitration organizations such as the Korean Commercial Arbitration Board(KCAB), the Korean Arbitrators Association(KAA), and the Korean Association of Arbitration Studies(KAAS) to foster a variety of strong awareness campaign, education and consulting programs, etc. for the popular use of arbitration clause. It will contribute to settle any disputes and controversies between the parties more speedy, economically and rationally, thereby reducing the costs, time and pains for solving them.

• 한국군사과학기술학회지
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• 제12권5호
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• pp.615-621
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• 2009

Since GPS receivers and INS algorithms do not work properly in the spinning vehicles due to change of the GPS signal and excess of the measurement limitation of the gyroscope, conventional GPS/INS integrated navigation systems do not provide accurate navigation outputs. This paper proposes a design method for GPS/INS integrated navigation systems of spinning vehicles. A special GPS receiver with a signal tracking loop for changed GPS signal caused by spinning and an INS with a roll estimation method are configured and the conventional integration filter is combined. The proposed method was verified through comparison of the navigation results. The result of the proposed method for the spinning vehicle was similar to that of the conventional navigation system without spinning.

• Journal of Mechanical Science and Technology
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• 제20권11호
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• pp.1961-1971
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• 2006

A soft recovery system (SRS) is a device that stops a high speed projectile without damaging the projectile. The SRS is necessary to verify the shock resistant requirements of microelectronics and electro-optic sensors in smart munitions, where the projectiles experience over 20,000 g acceleration inside the barrel. In this study, a computer code for the performance evaluation of a SRS based on ballistic compression decelerator concept has been developed. It consists of a time accurate compressible one-dimensional Euler code with use of deforming grid and a projectile motion analysis code. The Euler code employs Roe's approximate Riemann solver with a total variation diminishing (TVD) method. A fully implicit dual time stepping method is used to advance the solution in time. In addition, the geometric conservation law (GCL) is applied to predict the solutions accurately on the deforming mesh. The equation of motion for the projectile is solved with the four-stage Runge-Kutta time integration method. A small scale SRS to catch a 20 mm bullet fired at 500 m/s within 1,600 g-limit has been designed with the proposed method.

• 한국군사과학기술학회지
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• 제20권4호
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• pp.566-578
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• 2017

For optimizing the operation plan when strike packages attack multiple targets, this article suggests a new mathematical model and a parallel hybrid genetic algorithm (PHGA) as a solution methodology. In the model, a package can assault multiple targets on a sortie and permitted the use of mixed munitions for a target. Furthermore, because the survival probability of a package depends on a flight route, it is formulated as a mixed integer programming which is synthesized the models for vehicle routing and weapon-target assignment. The hybrid strategy of the solution method (PHGA) is also implemented by the separation of functions of a GA and an exact solution method using ILOG CPLEX. The GA searches the flight routes of packages, and CPLEX assigns the munitions of a package to the targets on its way. The parallelism enhances the likelihood seeking the optimal solution via the collaboration among the HGAs.

• 한국산학기술학회논문지
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• 제12권4호
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• pp.1597-1602
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• 2011

150개 군수업체를 대상으로 실시한 설문조사를 통해, 국방규격 및 민간표준 규격에 대한 활용 실태와 국방규격의 KS 부합화에 따른 경제적 효과 분석을 수행하였다. 대부분의 업체에서는 기업에서 활용하는 국방규격이나 인용 규격의 최신 변경사항에 대한 충분한 정보를 얻지 못하는 것으로 나타났다. 특히, 국방규격은 정보에 대한 접근 제한성으로 인해 최신 동향을 파악하기가 어렵다는 응답이 많았는데, 이는 국방규격이나 도면 검색 프로그램에 대한 활용을 통해 다소나마 해결될 것으로 판단된다. 국방규격의 KS 부합화 사업에 대해서는 많은 업체에서 품질향상, 연구 개발기간 단축, 생산성 증대, 표준 구매 및 교육 비용 절감 등과 관련하여 군수품 원가 절감에 다각적으로 기여할 것으로 예상하는 것으로 나타났다.

• 한국군사과학기술학회지
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• 제25권4호
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• pp.425-433
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• 2022

This paper studies the method of delivering munitions using both drones and UGVs that are developing along with the 4th Industrial Revolution. While drones are more mobile than UGVs, their loading capacity is small, and UGVs have relatively less mobility than drones, but their loading capacity is better. Therefore, by simultaneously operating these two delivery means, each other's shortcomings may be compensated. In addition, on actual battlefields, time constraints are an important factor in delivering munitions. Therefore, assuming an actual battlefield environment with a time limit, we establish delivery routes that minimize delivery time by operating both drones and UGVs with different capacities and speeds. If the delivery is not completed within the time limit, penalties are imposed. We devised the hybrid genetic algorithm to find solutions to the proposed model, and as results of the experiment, we showed the algorithm we presented solved the actual size problems in a short time.

• 한국전산유체공학회지
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• 제9권1호
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• pp.41-47
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• 2004

A successful store separation analysis tool, MSAP(Multi-body Separation Analysis Program) has been applied to F/A-18C/JDAM CFD Challenge Ⅱ. The challenge was devised to challenge CFD community to use CFD methodologies to predict and match the trajectory of a JDAM MK-84 separating from F/A-l8C. Trajectory simulations for two flight conditions were performed. Comparison between computed and measured flight trajectories for both conditions shows a good agreement.

• 한국국방경영분석학회지
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• 제12권1호
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• pp.50-70
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• 1986

When the ICM is fired in the artillery weapon, it is necessary to determine rounds of munitions for sufficient damage to targets of different sizes and shapes. This paper analyzes all kinds of delivery errors involved in ICM firing, and then develops the target coverage model appropriate for ICM salvos. This model is evaluated through computer simulation. The expected target coverage is measured according to number of salvos, range and probable error, velocity error, battery arrangement, target size, and shell reliability respectively.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2003년도 추계 학술대회논문집
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• pp.89-94
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• 2003

A successful store separation analysis tool, MSAP(Multi-body Separation Analysis Program) has been applied to F/A-18C/JDAM CFD Challenge II. The challenge was devised to challenge CFD community to use CFD methodologies to predict and match the trajectory of a JDAM MK-84 separating from F/A-l8C. Trajectory simulations for two flight conditions were performed. Comparison between computed and measured flight trajectories for both conditions shows a good agreement.

• 한국산학기술학회논문지
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• 제17권6호
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• pp.315-325
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• 2016

국방산업에 관련된 데이터의 양적팽창과 기술성장에 따라, 유의미한 품질정보를 추출하고 이를 통해 정책 제정 및 품질보증 업무에 활용하는 것이 요구되고 있다. 데이터에 기반한 경향 파악 및 의사결정 도출은 다수의 상황에 유연하게 대처할 수 있도록 하여 업무의 생산성을 높이고 새로운 기회를 발견하는 핵심 수단으로 활용될 수 있다. 따라서 국방산업에서는 개발단계부터 양산단계까지 다양한 품질정보들을 수집하고 이를 활용할 수 있도록 빅데이터 기반의 업무체계 구축이 필요하며, 축적된 정보를 활용하기 위한 방안이 필요하다. 본 연구는 정보체계 운용을 통해 신뢰성이 확보된 군수품의 품질정보를 수집하여 정형화된 빅데이터를 구축하는 방안을 제시하였으며, 사용자가 이를 활용할 수 있는 종합표준플랫폼을 제시하였다. 제안된 종합표준플랫폼은 군수품시험성적서 정보시스템(Test Report Information Service for Military Supplies, TRIS 시스템) 구축을 통하여 수행하였으며, TRIS 시스템을 통해 축적되는 정형 데이터의 활용방안을 제안하였다. 더불어 국방산업 비정형 데이터 활용방안에 대해 연구하였다. 본 연구의 결과는 향후 국방산업의 데이터 인프라 형성에 기여할 것으로 기대되며, 종합표준플랫폼을 통해 수집된 정보들은 군수품 품질보증에 관한 무기체계 별 전략 수립 및 동향 파악에 유용하게 활용될 것이다.