고체 추진 핀틀 추력기의 음향 모드 및 안정성 적분 연구

As a previous study for prediction of combustion instability in a solid propellent pintle thruster, acoustic modes and stability integrals have been conducted. The analysis of acoustic energy and the stability integral which is a part of an instability diagnosis factor have been performed with a commercial code, COMSOL. The existence of pintle effects on acoustic modes and stability integrals have been analyzed by comparing the annular-type chamber due to pintle presence and the cylindrical-type chamber.