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하동휘(Donghwi Ha),노태성(Tae-Seong Roh),이형진(Hyoung Jin Lee),유필훈(Phil Hoon Yoo) 한국추진공학회 2020 한국추진공학회지 Vol.24 No.5
In this study, the program for system analysis of an expander cycle rocket engine using liquid hydrogen as a fuel was developed. The properties of hydrogen were considered by the ratio of isomers with temperature. The analysis procedure was established with the open and closed types of the expander cycle engine and the simulation methods were suggested for each component. To validation of the analysis program, we compared the performance of the engine operating point and the analysis results performed overseas for Vinci and SE-21D, which are expander cycle engines. As a result of the analysis, the main performance factors of the system, such as the mass flow of the propellant, specific thrust, and power, except for some of the inaccurate input information, showed high accuracy with an error of around 1-2%.
수직 착륙형 Lab-Scale 발사체 시스템 개발을 위한 예비실험
신종민(Jongmin Shin),김덕민(Duk-Min Kim),김혜인(Hye In Kim),유진석(JinSeok Yoo),이승헌(Seung Heon Lee),하동휘(DongHwi Ha),이형진(Hyoung Jin Lee) 한국추진공학회 2023 한국추진공학회지 Vol.27 No.5
With the advent of the New Space era, as global competitiveness in the space launch vehicle market takes center stage, research and development of reusable launch vehicles for cost reduction are actively underway. As a preliminary study for developing Lab-Scale vertical landing vehicle, the basic and core technologies which need to be developed for reusable launch vehicle were intended. Design and verification were done by dividing the entire system into integration, supply, combustor, structure, and control. Lab-Scale vertical landing vehicle design process was established through stationary & flight test verification. Based on the experiences, foundations, and core technologies acquired in this study, further research was planned for developing a Lab-Scale vertical landing vehicle.