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발사체 분리과정모사 및 단계별 영상획득이 가능한 교육용 물로켓 CULV-1 개발 및 비행시험
이명재,박태용,강수진,장수은,오현웅,Lee, Myeongjae,Park, Taeyong,Kang, Soojin,Jang, Sueun,Oh, Hyunung 항공우주시스템공학회 2016 항공우주시스템공학회지 Vol.10 No.2
In this study, we proposed a water rocket CULV-1 (Chosun University Launch Vehicle-1). Unlike a conventional water rocket, CULV-1 can perform the booster rocket, fairing, and payload separation like an actual launch vehicle and also the imaging data acquisition. The conceptual and critical design of the proposed CULV-1 have been performed considering the operation characteristics. The verification tests have been performed from subsystem to system level in accordance with the established test specifications and verification procedures. Through the final launch test of the flight model, we have verified the design effectiveness of the proposed separation mechanisms for water rocket applications and the mission requirements of the CULV-1 also have been complied.
Fluid-Structure Interaction 기법을 이용한 Air Dam의 최적 해석
이동현(Donghyun Lee),최혜빈(Hyebin Choi),이명재(Myeongjae Lee),김용석(Yongsuk Kim) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
Recently, customer demanding of better fuel economy is growing. And as one of key factor, the importance of Aero performance is getting bigger. To meet customer expectation, GM optimize exterior design and contents by CAE at early develop stage. Among exterior contents, air dam is one of important Aero performance component. Air dam currently used soft material to avoid failure. But due to soft material property, air dam deformation by fluid pressure resulting in a drag change which is not expected. Previously, most of study was focused on air dam performance without deformation. In this study, Fluid-Structure Interaction analysis method applied to optimize air dam design in order to secure Aero performance.
권용길(Yongkil Kwon),노정규(Jungkyu Rho),최순규(Soonkew Choi),우치수(Chisu Wu),이명재(Myeongjae Yi),이선미(Sunmi Lee) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅰ
본 연구에서는 C 언어로 구현된 시스템을 C++로 변환하는 재공학 도구를 위한 정보저장소를 설계하였다. 정보저장소 구현을 위해 고려해야 될 사항들을 살펴보고, 본 연구에서 설계한 재공학 도구를 위한 정보저장소의 메타모델에 대하여 설명하겠다. 메타모델은 작은 단위(fine-grained)의 객체를 다루도록 설계되어 있다. 정보저장소는 관계형 데이터베이스 시스템 상에 구현될 예정이다.