For the integrated configuration of propeller/nacelle/intake

numerical simulation was carried out by using multiple reference frame (MRF) method and slip grid unsteady method

and the coupled flow field simulation of the internal and external flows of propeller/nacelle/intake integrated was realized. The aerodynamic performance influence of propeller slipstream on the intake under different working conditions was researched

and compared with the performance of the intake without the paddle configuration. Finally

the reason for the increase of the total pressure after the propeller paddle was explained by numerical analysis. The results show that the result of the multiple reference frame method is consistent with the time-average parameters result of the slip grid unsteady method

the multiple reference system method can be used to calculate the aerodynamic performance parameters of the propeller and the intake port. The work of the propeller increases the total pressure recovery coefficient of the intake port. The greater propeller speed means the greater increment of the total pressure recovery coefficient

and the propeller slipstream significantly increases the inlet port distortion index. The formula of the relationship between the total pressures before and after the paddle has been derived by numerical analysis

and compared with the simulated value

with the error within 3%.