Abstract: A two-phase Pulse Detonation Engine(PDE) model was designed which the diameter and the length are 58 mm and 1 275 mm respectively. Under the condition of filling air by compressor and at the operating frequency of PDE from 30 Hz to 50 Hz, the pressure time history was recorded by five pressure transducers, and the characteristic of pressure wave was studied. Based on the experiment research, the PDE model can steadily and periodically operate at the designed frequency of 50 Hz,and the peak valuable of detonation wave pressure is more than 1.6 MPa.As the operating frequency increased, the detonation was earlier initiated than the lower frequency(less than 40 Hz), and the detonation waves can propagate successfully in the combustor.

Key words: detonation, two phase Pulse Detonation Engine, high frequency, experimental research, characteristic of pressure