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- 저자 : Thawdar Lwin 서정일(Jung-Il Shu) (검색결과 2 건)
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Interactive Space Launch Design Framework Development using Centralized Database Architecture
Thawdar Lwin(토우다 린),Jung-Il Shu(서정일),Jin-Wook Kim(김진욱),Jae-Woo Lee(이재우),Sangho Kim(김상호) 한국추진공학회 2014 한국추진공학회 학술대회논문집 Vol.2014 No.12
This study describes a design framework development using system engineering and centralized database concepts for various space launch vehicles to assist aeronautical engineers during mission and conceptual design and analysis process. This framework was first implemented in Matlab environment. Then due to some technical insufficiencies it is upgraded to a better version in VB.Net environment. Centralized database concept is applied for better data storage efficiency for all input and output of modules in the framework. Moreover, sorting function for database of competitive rockets over the world is added in the process for requirements. The purpose of utilization of data mining is to make the design optimization performed with fast and successful convergence by predicting the data necessary for the design optimization. Finally, the information resulted from a mission design is utilized as the system baseline to a newly introduced stage ‘Conceptual Design’. The framework GUI design is done mainly based on system engineering concept, thereby allowing user to interact with GUIs to easily finish the whole mission design process from start to end. The design framework is developed in a high-level technical computing language and interactive environment of VB.Net and 3D modeling using CATIA v5. To sum it up, this design framework includes and integrates many different functions and newly-added features: data mining for estimation and optimization of required initial values, fast accessibility to data mining values once it is determined, design analysis, design synthesis, and geometric 3D modeling of final configuration of the designed space launch vehicle. With this space launch framework, the mission and conceptual design for the rocket system targeted on the 700 x 700 ㎞ circular orbit has been successfully developed and demonstrated the efficiency of the framework.
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임무설계 유기성을 고려한 우주발사체 개념설계 프로세스 및 프레임워크 개발
김진욱(Jin-Wook Kim),Thawdar Lwin,서정일(Jung-Il Shu),이재우(Jae-Woo Lee),김상호(Sangho Kim) 한국추진공학회 2015 한국추진공학회 학술대회논문집 Vol.2015 No.5
본 연구에서는 우주발사체 임무설계를 통해 도출되는 사이징 및 임무 해석 결과를 이용하여 발사체 세부 형상, 세부계통 해석 결과 등을 도출하는 개념설계 단계까지의 설계 프로세스 및 프레임워크를 개발하였다. 임무설계 단계에서는 주어진 목표 궤도 및 탑재체 질량에 맞춰 임무를 수행할 수 있도록 사이징을 진행하며, 개념설계 단계에서는 사이징 및 임무 해석 결과를 이용하여 추진, 공력, 구조하중 등의 세부계통 해석을 진행한다. 또한, 개념설계 결과를 통해 도출된 추진 정보 및 질량 정보는 다시 임무설계로 피드백 되어 사이징 및 임무 해석을 진행하도록 임무설계와 개념설계 간의 유기성을 고려한 우주발사체 설계 프로세스를 개발하였다. 그리고 이 모든 설계과정을 VB.NET으로 GUI화하여 프레임워크를 개발하였으며, SQLite 데이터베이스 프로그램을 이용하여 입출력 값을 저장하고 관리한다. 마지막으로 KSLV-II 제원을 이용하여 결과를 도출하고 검증을 진행하였다. In this study, our integrated design process and framework for space launch vehicles (SLV) was developed. The established design process consisted of the ‘Requirement Analysis’, ‘Mission Design’, and ‘Conceptual Design’ stages. In the ‘Mission Design’ stage, the mission and sizing results are obtained. The ‘Conceptual Design’ stage contains several analysis module: the Propulsion, Aerodynamics, Load & Structure, and Weight. These stages implement the system engineering process, and each stage exchanges information interactively. And the framework for SLV design is developed based on the VB.Net. The whole data of input and output are saved in SQLite which is database program. The results of design are obtained using KSLV-II specification and the validation is performed.
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