Experiment Research of Ramjet with Cavity-based Flameholder

Doctor candidate, Department of Aerospace and Material Engineering, National Univ. of Defense Technology, E-mail:nudtliqing@gmail.com. Lecture. Associate Professor. Professor. Experimental investigations on the ignition characteristic of connected-pipe ramjet combustor with cavity-based flame holder are conducted using liquid hydrocarbon fuel. Successful ignition is achieved using high-energy spark igniter and hydrogen pilot flame respectively. The results suggest that the ignition characteristic is closely related to the injection pressure drop and injection mode. Based on the wall injection mode, successful ignition is easily achieved, while based on the center injection mode, ignition is hardly to reach. Meantime it is found that the size of the throat has little influence on the ignition characteristic in ramjet combustor with cavity-base flameholder.