Abstract:Surge measurement system is used to accurately identify the surge when the aero-engine is about to surge or at the early stage of surge. It is an important means to avoid the serious accidents, such as the air shutdown and blade fracture caused by aerodynamic instability of aero-engine. In this paper, based on an existing dynamic pressure calibration device, the high temperature characteristic of the surge differential pressure sensors and the dynamic characteristic of the surge measurement system are tested, which will greatly decrease the chance of misjudgment and missed judgment of the aero-engine surge measurement system. The dynamic calibration of surge measurement system is of great significance to the study of aero-engine instability and the improvement of engine reliability.