吸气式脉冲爆震发动机原理性试验研究

设计了内径分别为60、70mm的两组吸气式两相脉冲爆震发动机，在略高于常压状态下成功进行了以汽油为燃料、以空气为氧化剂的吸气式两相脉冲爆震发动机原理性试验。进气道内采用无阀的进气结构，试验中在爆震管内部安装Shchelkin螺旋来促进爆震波的生成，所测量的爆震波接近充分发展的C—J爆震波。内径60、70mm的发动机最高工作频率分别为15、20Hz。进气道内压强变化幅度在0．1MPa左右，说明所设计的进气道与爆震管匹配良好，这将为脉冲爆震发动机用于工程实际提供技术储备。

Elementary experimental investigation of air-breathing pulse detonation engines

Two air-breathing two-phase Pulse Detonation Engines （PDEs） had been designed whose internal diameters were 60mm and 70mm respectively. In the conditions of the pressure a little higher than 1 atmosphere, the PDEs were tested and run on gasoline-air mixture. There was a valveless structure in inlet channel. Shchelkin spiral was fixed in detonation tube to enhance the production of detonation wave. The measured pressure of detonation wave was close to that of C-J detonation wave. The highest working frequency of the engines with 60mm and 70mm internal diameter were 15Hz and 20Hz respectively. The transformation scope of the pressure was 0.1MPa approximately. It was indicated that the designed inlet channel matched well with the detonation tube, which would provide technology repertory for the application of PDE in engineering.