In order to understand the distortion characteristics of the engine inlet face due to exhaust gas ingestion

a ground test was done to acquire the total pressure and total temperature data of the engine inlet face. Based on the measurement data

an analytical study on the features of the temperature and pressure distortion and the influences on the temperature distortion intensity were carried out. The results showed that the deflected exhaust gas can be ingested by the inlet

which could produce a temperature distortion on the engine inlet face

in this situation the flow field on the engine inlet face was a combination of temperature and pressure distortion. The hot exhaust gas ingestion can raise the pressure in the low pressure region on the engine inlet face

and lower the steady pressure distortion. As the engine working thrust lever was improved and the working time was increased

the temperature distortion intensity peak was higher. The change of the temperature flow field lagged behind that of throttle

indicating a dynamic changing flow field

but the temperature rise rate was relatively low.