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우주용 냉각기의 미소진동을 이용한 에너지 수확 시스템의 실험적 성능검증
정현모,권성철,오현웅,Jung, Hyunmo,Kwon, Seongcheol,Oh, Hyunung 항공우주시스템공학회 2016 항공우주시스템공학회지 Vol.10 No.3
The on-board appendages of satellites with mechanical moving parts such as the fly-wheel, the control-moment gyro, the cryocooler, and the gimbal-type directional antenna can generate an undesirable micro-vibration disturbance, which is one of the main causes of the image-quality degradation that affects high-resolution observation satellites. Consequently, the isolation of the micro-vibration issue has always been considered as salient, and the micro-vibration is therefore the focus of this study wherein a complex system that can provide the dual functions of a guaranteed vibration-isolation performance and electrical energy harvesting is proposed. The vibration-isolation and energy-harvesting performances of the complex system are predicted through a numerical analysis based on the characteristics that are obtained from component-level tests. In addition, the effectiveness of the complex system that is proposed in this study is verified through an assembly-level functional-performance test.
큐브위성 STEP Cube Lab.의 지상국 시스템 설계
전영현,채봉건,정현모,전성용,오현웅,Jeon, Younghyeon,Chae, Bonggeon,Jeong, Hyeonmo,Jeon, Seongyong,Oh, Hyunung 항공우주시스템공학회 2012 항공우주시스템공학회지 Vol.6 No.4
CubeSats classified as pico-class satellite require a ground station to track the satellite, transmit a command, and receive an on-orbit data such as SOH (State-of-Health) and mission data according to the operation plan. For this, ground station system has to be properly designed to perform a communication to with the satellite with enough up- and down-link budgets. In this study, a conceptual design of the ground station has been performed for the CubeSat named as STEP Cube Lab. (Cube Laboratory for Space Technology Experimental Project). The paper includes a ground station hardware interface design, link budget analysis and a ground station software realization. In addition, the operation plan of the ground station has been established considering the STEP Cube Lab. mission requirements.
큐브위성 STEP Cube Lab.의 지상국 시스템 개발
전영현,채봉건,정현모,전성용,오현웅,Jeon, Younghyeon,Chae, Bonggeon,Jeong, Hyeonmo,Jeon, Seongyong,Oh, Hyunung 항공우주시스템공학회 2015 항공우주시스템공학회지 Vol.9 No.4
The CubeSats is classified as a pico-class satellite which requires a ground station to track the satellite, transmit commands, and receive an on-orbit data such as SOH (State-of-Health) and mission data according to the operation plan. In order to this, the ground station system has to be properly designed to perform a communication to with the satellite with enough up- and down-link budgets. In this study, a conceptual design of the ground station has been performed for the CubeSat named as STEP Cube Lab. (Cube Laboratory for Space Technology Experimental Project). The paper includes a ground station hardware interface design, a link budget analysis and a ground station software realization. In addition, the operation plan of the ground station has been established considering the STEP Cube Lab. mission requirements.
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.