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하이브리드 로켓엔진 액체산소 재생냉각 노즐 연구 - Part 1
박영일(Youngil Park),천우태(Wootae Cheon),차승원(Seungwon Cha),최세원(Sewon Choi),우경진(Kyoungjin Woo),류성훈(Sunghoon Ryu),신동해(Donghae Shin) 한국추진공학회 2023 한국추진공학회지 Vol.27 No.5
With the aim of being applied to the upper stage for a domestic small launch vehicle, a 3-ton class hybrid rocket engine was designed and its unit component was manufactured. The paraffin-based solid fuel and liquid oxygen were selected as propellants, and an elec-motor pump is used for the oxidizer supply. For thrust vector control, submerged nozzle that utilizes of Flex Seal was adopted, regenerative-cooling method is applied for nozzle cooling and using liquid oxygen as a coolant. This paper introduces regenerative cooling channel design and manufacturing status of the development model of nozzle assembly and future test plans.