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 60 mm and 70 mm 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 60 mm and 70 mm internal diameter were 15 Hz and 20 Hz respectively. The transformation scope of the pressure was 0.1 MPa 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.