• Title/Summary/Keyword: Aquisition Program

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The Development of Torpedo Defense Experimental Technique based on M&S (M&S 기반 어뢰방어전 모의실험 기술 구현)

  • Nah, Young-In;Lee, Sim-Yong;Yoon, Han-Saem
    • Journal of the Korea Institute of Military Science and Technology
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    • v.13 no.5
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    • pp.818-823
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    • 2010
  • Exploiting models and simulations are encouraged among the defense acquisition society, as now enforced by the Defense Aquisition Program Administration's regulations. They are useful and, sometimes, inevitable especially in an earlier phase of system development. Computer-simulation-based experimentation technique for the system operational performance analysis for a torpedo defense system is introduced in this paper. Problem definition for the torpedo defense system analysis and engineering efforts for models and simulations development are presented here, including defining measures of performance and effectiveness for the torpedo defense system, conceptual modeling for torpedo engagement and defense simulation, design of experimentation, design of simulator and experimentor, and hardware and software implementation of an analysis support tool - a system operations demonstration and experimentation simulator.

Real-time Geotechnical Information Database Development Using Location Based Service (LBS를 이용한 실시간 지반정보 DB 구축 시스템 개발)

  • Woo, Je-Yoon;Koo, Jee-Hee;Lee, Sang-Hoon
    • Journal of Korea Spatial Information System Society
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    • v.5 no.2 s.10
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    • pp.91-103
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    • 2003
  • There are currently tremendous amount of geotechnical information saved, which has been qcquired for essential application of site selection, plan, design, constructin, repari in the builing work. However, due to the lack of the location data attribute, there has been a trouble in its analysis and GIS implementation. In this study, the geotechnical information aquisition program(PGeo) for real-time database in the field and geotechnical information reporting program(GeoReport) by Web-GIS for additional data input and its reporting function has been developed.

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The Development of Data Transformation Program for Establishing the Real-Time Database in Underground Utility (실시간 지하시설물 데이터베이스 구축을 위한 자료 변환 프로그램 개발)

  • 최석근;박경식;임인섭
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.16 no.2
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    • pp.159-168
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    • 1998
  • In traditional method, the establishment of database for current data of underground utilities would frequently occur a lot of losses in the time, economic effect and problems of accuracy because the procedure for the generations of transverse and vertical section mapping would be composed of many steps and the establishment of underground utility is inefficiently accomplished. The goals of this study are 1) to obtain digital information and data aquisition simultaneously by realtime in the field, 2) to develop the computer program of generation of transverse and vertical section mapping based on the plan for data transformation. As a result of this study, the establishment of database for underground utilities is able to save the time and improve economic effect and accuracy while minimizing errors in rewriting and acquiring data.

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A Study on the Dynamic Characteristics on the Test Line for Korean High Speed Train (한국형 고속전철의 주행진동 특성에 관한 연구)

  • 김영국;김석원;박찬경
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2003.05a
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    • pp.555-560
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    • 2003
  • Korean High Speed Train(KHST) has been tested on the high speed test line in Osung site of Korea High Speed Rail Construction Authority (KHRC). since it was developed as G7 Project Plan In 2002. This paper introduces the dynamic test devices in KHST and shows the comparison between the results of test and theoretical computing results which derive from the new model for KHST dynamic behavior. Previous computer simulation model for KHST was developed to review wether the vehicle system was satisfied with the dynamic performance requirements during the design procedure. But It should be applied the results of the parts test for suspension elements in order to compare between the results of computation and real test. Using VAMPIRE Program made by AEA Technology in UK. the new model also was modified. This paper shows that the static wheel loads calculated from new model is similar to test results. For test on high speed line, we prepared the test devices for evaluating the dynamic performances. which was consisted of the accelerometers( based on Kisler Co.) and the data aquisition systems (based on National instrument Co.), and test program coded by LabView 6i program. These lest devices and programs are flexible to extension the channels for adding sensors and connect to the ethernet network. The acceleration of car bodies, bogie frames and axle boxes were compared between the results of computation and test at 150km/. This paper shows that the results of test were high in high frequency band range but similar frequency band range. It might be considered that these differences were caused by the test which did not performed at constant speed for comparison analysis. Also. It will be able to understand the differences and make better results through a lot of tests planed in future.

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A Study on the TQM and 6 Sigma Management - Primarily on service industry - (TQM과 6시그마 경영에 관한 고찰 - 서비스산업을 중심으로)

  • 김동훈;장영준
    • Journal of Korean Society for Quality Management
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    • v.30 no.3
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    • pp.120-138
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    • 2002
  • In order to carry out TQM and 6 Sigma management, it is the key elements to make clear a goal and a mission. Above all, we can succeed In achieving a dramatic change and a great outcome only when we make clear the method, incentives, organization and plans under the clear objective. In order to secure the competitiveness against the external challenge, it is essential to keep the several crucial factors such as CEO's will, the systematic process to measure and manage, monitoring to satisfy customer's needs and an aggressive development of TQM activity to encourage the endeavour of the relentless enhancement, and also a positive effort Is to be made for evaluating all quality culture like training experts internally by an outstanding training program under CEO's firm leadership. This study is carried out to understand that which features and factors of success can exist in a company culture if a company accepts a theoretical basis and concept, the general of TQM and 6 Sigma which are one of a management strategy, and carries out TQM and 6 Sigma for achieving improvement of quality and customer's satisfaction.

A Study on the Improvement of the Criteria for Calculating Compensation of Deferment of Defense Acquisition Projects (무기체계 연구개발시 지체상금 개선방안에 관한 연구)

  • Kim, SeongHo;Ryoo, YeonUk;Chun, SamHyun
    • Convergence Security Journal
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    • v.17 no.4
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    • pp.31-37
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    • 2017
  • This study compares the main features of the Act of National Contract with the Act of Defense Aquisition Program, which is the only one in Korea for long-term contracts. When applying the progress payments system to the defense R&D project, We can prevent disputes between parties and create a stable development environment through smooth partnerships. Smaller, direct and indirect losses can be alleviated, such as the waste of administrative power required to deal with disputes due to the payment of delayed prizes and restrictions on business activities due to the difficulty of forecasting the results of companies. In large measure, we will be able to procure a high-quality weapon system in a timely manner to support the security of the nation as well as international competitiveness through the growth of our defense industry.

Automatic Depth Control System for Tractor Implement (트랙터 작업기의 경심 자동제어시스템)

  • Choi, C.H.;Na, K.W.;Kim, J.M.
    • Journal of Biosystems Engineering
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    • v.18 no.4
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    • pp.328-343
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    • 1993
  • To control depth of tractor implement, an automatic depth control system based upon microcomputer was developed. This system consists of data aquisition system to measure and to record travel speed, draft and depth of the implement, hydraulic system to control the implement depth and 3-point hitch to attach the implement. Program, written in C language, was able to select position control, draft control and mixed control. To analyze parameters affecting this system, the performance of the system was evaluated through use of computer simulation and verified in soil bin experiments. 3-point hitch was lifted by hydraulic pressure and lowered by implement weight. Dead band was one of the important factors which affect the stability and the accuracy of the system. The system became unstable when the flow rate was increased or when the dead band was decreased. The position control mode with on-off control showed the great ability to control the implement at the given plowing depth. With the draft control, the tractor load could be reduced, however the plowing depth was changed unexpectedly when the soil was hard and inconsistent. The mixed control could improve the performance of the system to maintain the plowing depth without overload of the tractor.

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A Study of Optimization Approach for GPS Anti-Jamming System's Integration on Military Aircraft Based on the Requirement of Capability (요구성능 기반의 군용 항공기 항재밍 GPS 체계 구축 최적화 방안 연구)

  • Lee, Moongul;Shin, Kisu;Choi, Jaesik
    • Journal of the Korea Institute of Military Science and Technology
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    • v.18 no.1
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    • pp.66-83
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    • 2015
  • Global Positioning System(hereafter; GPS) is recently an essential element in the various navigation and weapon delivery systems of military aircraft. However, GPS is vulnerable to the jamming threats since its signal power is very weak. Therefore, ROK defense has been concerning how to resolve this issue and how to integrate these systems needed, and is trying to acquire the proper anti-jamming GPS system. This study is to provide several schemes against the jamming threats effectively. We propose the several processes to analyze the required capability and demonstrate the result's of modeling and simulations(hereafter; M&S) for this integration of military aircraft, and the mathematical programming model for system optimization of military aircraft anti-jamming GPS system on the basis analysis of M&S results which could be considered available budget and the project characteristic. These schemes will be helpful on proper acquisition of these systems and. We are looking forward to contributing to the integration of anti-jamming GPS system of ROK military aircraft.

A Study on the Damage Design of Military Aircraft Structure Material by Armor Piercing Bullet Hit (철갑탄 피격에 의한 군용 항공기 구조재료의 손상설계에 관한 연구)

  • Hur, Jang-Wook;Hyun, Young-Jin
    • Journal of the Korea Institute of Military Science and Technology
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    • v.13 no.6
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    • pp.1051-1057
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    • 2010
  • Database for the damage reference by armor piercing bullet test was established for both tube and plate specimens having a range of thickness. As the inclined angles of hit are increasing, it has been found that penetration damage diameter tends to increases accordingly in both specimen of the tube and plate, and such penetration damage diameter on the rear side becomes bigger than those on the front side. The tube specimen showed that the damage becomes bigger when central areas rather than the peripheral were hit. Through the plate test, it also has been found that the penetration ballistic limit for Al alloy is about 25.4mm and that of stainless steel about 12.7mm. From the fatigue analysis results using the database for damage reference, it has been identified whether the safety requirements of military aircraft could be met.

A Study on the Derivation of ConOps Sea-based Guided Weapon Systems (해상기반 유도무기체계의 운용개념 도출에 관한 연구)

  • Lee, Kyoung Haing;Oh, Kyung Won
    • Journal of Aerospace System Engineering
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    • v.11 no.5
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    • pp.50-55
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    • 2017
  • This research describes the ConOps(Concept of Operations) of sea-based guided weapon systems. The ConOps describes how the proposed system is to be used and is more descriptive than technical in terms of various stakeholders. It should be prepared to support the concept of the life cycle stage of the system. Developing ConOps plays an important role in ensuring that operational/maintenance, maintenance, and acquisition and development areas are better understood by users' needs and expectations. In this point of view, this work presents the process of deriving ConOps and aims to derive operational concept of maritime guided weapon system by using tools.