• Proceedings of the Korean Information Science Society Conference
• /
• 2000.10a
• /
• pp.454-456
• /
• 2000

다른 여느 분야의 소프트웨어 개발 분야보다도 형상관리의 필요성의 나타나는 분야로 위성탑재 소프트웨어 분야를 꼽을 수 있는데 이는 위성소프트웨어의 기본적인 특성에 기인한다고 볼 수 있다. 위성 탑재 소프트웨어는 여느 소프트웨어보다도 그 신뢰성을 중시하고 있으며 이러한 신뢰성은 개발 과정상의 잘 정의되어진 형상관리에 있다. 본 논문에서는 아리랑 위성 탑재 소프트웨어 개발에 과정에서의 형상관리 방법 및 절차를 기술하였으며 이러한 형상관리하에 아리랑 위성 탑재 소프트웨어는 개발되고 위성에 탑재되어 그 임무를 훌륭히 수행하고 있다. 이 논문을 통해서 고도의 신뢰성을 요구하는 소프트웨어 개발에 있어서의 형상관리 방법에 도움이 되고자 한다.

• ETRI Journal
• /
• v.9 no.2
• /
• pp.118-133
• /
• 1987

본고는 TDX 전전자교환기 개발에 따른 시스팀 형상관리를 효율적이고 체계적으로 수행하기 위한 자동화 도구, $CMI^2S$(Interactive Information System for TDX Configuration Managements)의 개발에 관한 연구결과이다. $CMI^2S$는 menu-driven 방식을 기본으로 하는 네가지 도구 (CCT/RDT/SPRT/DSMT)들로 구성되어 있으며, 주요 개발환경중의 하나인 데이터베이스 시스팀은 VAX-l1/750 컴퓨터 시스팀의 Troll/USE Relational DBMS 이다. 그리고 $CMI^2S$의 주목적은 형상관리 활동인 형상인식, 형상통제, 형상상태 기록의 수행을 자동화하여 TDX 시스팀의 integrity를 향상시키는데 있다.

• Journal of the military operations research society of Korea
• /
• v.28 no.2
• /
• pp.95-115
• /
• 2002

Configuration management is a process that establishes and maintains consistency of a product with its requirements and configuration information throughout its life cycle. This paper deals with the improvement of configuration management for weapon system. We analyze configuration management system, organization, human resource, regulations, and automated system of USA. Then we apply the ideas to our proposal for the improvement of configuration management. The proposal for the improvement of configuration management consists of three parts. The first one is the improvement of configuration management for weapon system by R&D, the second one is the improvement of configuration management for weapon system by foreign acquisition, and the last one is the improvement of configuration management in the aspects of organization, human resource, regulations, and automated system. This paper will be contributed to the activation of configuration management system and the efficiency of acquisition project management.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.38 no.6
• /
• pp.519-529
• /
• 2010

In the present study, unsteady calculations have been performed to simulate flows around a UH-60A full configuration including main rotor, fuselage, and tail rotor. A flow solver developed for helicopter aerodynamic analysis was used for the simulation of the complete helicopter in high-speed and low-speed forward flight. Unsteady vibratory loads on the main rotor blades were compared with flight test and other calculated data for the assessment of the present flow solver. Aerodynamic interaction of the three components of the helicopter was investigated by comparing with the results of main-rotor-alone, main rotor and fuselage, and tail-rotor-alone configurations. It was found that the existence of the fuselage has an effect on the normal force distribution of the main rotor by varying downwash distribution on the rotor disc, and tip vortices trailed from the main rotor strongly interact with the tail-rotor.

• Journal of the Korean Society of Propulsion Engineers
• /
• v.26 no.3
• /
• pp.22-31
• /
• 2022

Existing Finocyl grain designs assume configurations and repeat the process of configuration modification and confirmation of the requirements through burn-back analysis. Such a design increases the design fatigue of workers and has a problem of different design completeness depending on capabilities. Therefore, this study devised an optimal design method that applied genetic algorithms to the Burn-back automation analysis program to solve the problem of existing design. For stable search, variable-offset and non-drawable configuration control techniques were developed. The program performance was verified through the searching neutral and double thrust grains.

• Korean Journal of Computational Design and Engineering
• /
• v.13 no.4
• /
• pp.305-313
• /
• 2008

A configuration management system was implemented by applying PLM to the defense field. The PLM system has recently been incorporated in a wide range of industries, and it has allowed for improvements in work productivity and expansion of related services by comprehensively managing and securing connection regarding configuration information in the defense field. Implementations include acquisition of configuration related information and reinforcement of BOM-oriented configuration management function, securing compatibility among 3D drawings of different agencies, improvement of drawing and document management functions, comprehensive systematic configuration management focused on product structure, strengthened configuration control functions, a management system according to the work flow and life cycle functions, an integrated configuration management system of 3D model CAD resources and an enhanced management system. This paper covers a case study reviewing the implementation of a PLM-based configuration management information system and its results, so that the information can be made available to other agencies and companies seeking to apply PLM in their organizations.

• Journal of Advanced Marine Engineering and Technology
• /
• v.35 no.2
• /
• pp.204-215
• /
• 2011

Flame stability is the one of the main mechanism of laminar lifted flame and flame propagation velocity becomes a yardstick to measure the flame stability. Bilge has presented the flame propagation velocity of the triple flame and the flame stability mechanism related the flame configuration and mixture fraction. However, there was not able to observe all process of flame ignition and extinction for small nozzle diameter. In this paper, we have subdivided the flame configuration and stability mechanism and classified the flame behavior with a nozzle diameter. Also we have subdivided the 'triple flame propagation opened' and the 'triple flame propagation closed' from the triple flame propagation of triple flame criterion.

• Journal of the Korean GEO-environmental Society
• /
• v.9 no.5
• /
• pp.61-69
• /
• 2008

In general, it has been usually used the method that assess rock slope stability using stereographic projection method, limit equilibrium analysis, numerical analysis and slope stability evaluation table. Several methods for assessing the stability of rock slopes has been proposed on the basis of site investigation data. These method adopted different evaluation items and weighting factors by researchers, organization and nation. But the researches for each evaluation items were insufficient. So the effectiveness of rock slope stability evaluation items for geometrical configuration (slope height, slope direction and angle, dip and dip direction of major discontinuity, absolute value for the direction difference for slope and major discontinuities) and topographical characteristic (possibility of topographical water concentration, upper natural slope angle, slope configuration) using 315 failure and stable highway rock slope analysis data, AV (abnormal value) analysis and NMAV (normalized maximum abnormal value) analysis were evaluated.

• Journal of the Korea Society of Computer and Information
• /
• v.13 no.7
• /
• pp.127-138
• /
• 2008

Configuration and data management system for weapon system research and development processes should assist concurrent engineering and collaboration activities for various documents, drawings, part informations and product structure informations. In this thesis we defined the system architecture using the CBD methodology and implemented the component based system development process. Most of the configuration and data management systems consist of three layered system architecture which use the general MVC models. In this thesis we defined four layered system architecture based on EJB structure under J2EE environments. Through the four layered system architecture, we break down the general model layer into two detailed business layers and the ordinary control layer into two system dependent layers. With these four layers, we proposed the methodology that detailed the characteristics of the components. Through the CBD approach and the component based development process, we can get the representation model and implement the actual system of the configuration and data management system for weapon system R&D.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.47 no.6
• /
• pp.405-413
• /
• 2019

Deployable structures are widely used for space mission because of their advantages in storage and transportation coming from its transformability of configuration. The space structures should be designed with high stiffness to withstand the various types of disturbance that they encounter during operation. Especially for the deployable structures, the internal forces loaded on the component or the stiffness at its deployed configuration should be analyzed since they usually consist of the thin and light structures. In this paper, a dynamic model of the scissors structure is established and its deployment behavior is analyzed, especially focusing on the deployment speed and the internal force on each joint. In addition, modal analysis is carried out for the 1-stage and 2-stage scissors structures in order to analyze the stiffness of the scissors structure based on its deployed configuration. The fundamental mode shapes and natural frequencies are analyzed and discussed.