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전성용(Sungyong Jeon),이천환(Chunhwan Lee),김덕진(Deokjin Kim),오광철(Kwangchul Oh),이종인(Jongin Lee),이춘범(Chunbeom Lee),권태희(Taehee Kwon),조재득(Jaedeuk Jo) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Today diesel engines are used extensively in the automotive, because they have excellent fuel economy and performance. But emissions from diesel engines are a significant air-quality issue by high emission of the NOx and PM. Many methods of aftertreatment have been developed since the advent of emission standards for diesel engines. The diesel aftertreatment system can be classifie into various categories by its target emission and reduction mechanism. The control methods and operating conditions are very important consideration for an each aftertreatment system. It is necessary to test with engine dynamometer precisely, since the characteristics of diesel emission are important parameters for the development of aftertreatment system. Although engine dynamometer test is necessary, it is not cost-effective. To reduce the prime cost, it is needed to build more cost-effective test equipments, In this work, the simple evaluation system was examined as a means of testing cost-effective using a real diesel engine and water-brake system.
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.