1톤급 수직이착륙 시연체 추진기관 구성 및 압력제어

다국어 초록 (Multilingual Abstract)

In this paper, the configuration of the propulsion system of the vertical take-off and landing demonstrator(VTVL) and the pressure control concept and design method applied to the VTVL are introduced, and the results of the cold flow test using liquid nitrogen are analyzed. The propulsion system of the VTVL uses liquid oxygen and liquid natural gas as propellants, and a gaseous nitrogen pressurization system is applied. When the propellant is supplied, an appropriate amount of pressurized gas is supplied to maintain the pressure in the propellant tank at a certain required pressure. To control the supply rate of pressurized gas, an assembly block composed of solenoid valves and orifices was developed, and its effectiveness was confirmed through analysis of the liquid nitrogen flow test results.