오픈형 스월 인젝터의 형상 변화에 따른 동특성 연구

Swirl injectors are widely used for Liquid Rocket Engine(LRE) as fuel injection system and following researchs are also being carried out through the world. Especially, solving combustion instability problem is essential for every type of LREs. In this study, we carried out water test for open-type swirl injector as a fundamental research to solve combustion instability problem. We made pressure fluctuation to inlet flow coming into the injector and find out following response characteristics. The effect of swirl chamber length was also studied by changing swirl chamber length.