频率30~50Hz两相脉冲爆震发动机研究

 设计了一台内径58mm,长度1275mm的脉冲爆震发动机(PDE)原型机。采用地面充压进气,在工作频率30~50Hz的工况下研究PDE爆震管内的压力波特性。试验发现,该PDE样机在频率50Hz以内都能够稳定的以间歇方式工作,爆震波峰值压力大于1.6MPa;随着PDE工作频率的提高,工作频率为45~50Hz时,比40Hz以下工作频率提前触发了爆震波,且爆震波得到了充分的发展。

Investigation on Two Phase Pulse Detonation Engine at the Frequency 30-50Hz

A two-phase Pulse Detonation Engine(PDE)model was designed which the diameter and the length are 58 mm and 1275 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.