关键词: 点火参数;爆压;脉动式喷气发动机;脉冲爆震发动机;模型试验

Abstract: The experimental investigation was carried out for the effects of ignition energy and filling degree on pressures in different locations along pulse detonation combustor in a PDE model under different ignition frequencies In PDE model fueled by air/gasoline the conditions for obtaining fully developed detonations were sufficient ignition energy and filling degree Two different types of ignition systems were employed.The experimental results show that the ignition energy and filling degree have considerable influence on detonation initiation With low energy plug, pulse detonation frequency was often less than ignition frequency Whereas the high energy igniter can make deflagration to detonation transition shorter, and every ignition can successfully trigger a detonation with higher peak pressure In addition, detonation occurrence varying with filling degree--over filled, critically filled or half filled was studied The higher filling degree,the higher filling velocity resulted in higher turbulence,and it can promote fully developed detonation

Key words: Ignition parameter;Detonation pressure;Pulsejet detonation engine;Pulse detonation engine;Model test