Abstract：The impact of plateau environment on powder conveying capacity of aircraft engine was investigated with the utilization of similarity analysis of aircraft engine and theoretical simulation of gas-particle dual phase flow. The critical parameters of pneumatic conveying powder in plateau environment and plain environment were obtained to represent powder conveying capacity. Experiments in the plateau environment were taken to verify the relationship between rotate speed of aircraft engine and the powder conveying capacity. The result indicates that powder conveying capacity at the altitude of 4 500 m is half of that in plain areas. Increasing rotating speed and decreasing powder conveying speed are practical methods to solve the congestion problem of powder conveying.

Keywords: plateau environment; powder conveying; particle dispenser; atmospheric pressure; ground temperature