1results about How to "Extend the experiment time" patented technology

The present application relates to a kind of pulse jet device for simulating surge condition of micro turbojet engine, jet unit and bleed air unit are all installed on test bench, and the environment simulation under the surge condition of micro turbojet engine test is realized by joint action;The bleed air unit uses external fan to supply stable high pressure airflow to jet unit by bleed air pipeline;The jet unit is located in gas collection cavity, and the phase of pulsating jet in subsection gas collection cavity is adjusted by adjusting pulsating jet angle by hydraulic unit and servo valve, and the simulation of engine surge condition is realized by the joint action of the two. The present application can realize the change of pulsating jet by changing the direction and phase of jet on the basis of micro turbojet engine test bench, and the simulation of micro turbojet engine surge condition caused by different influencing factors can be completed.