Abstract:The steam jet technology is used to deicing the aircraft fuselage, and the structure of the steam nozzle is optimized. Firstly, the spray head of the horizontal jet plane is simulated and analyzed by means of the uniform distribution of the nozzle. The fluent software is used to simulate the odd and even number of nozzles, and the temperature field is analyzed. The results show that the odd type is better than the even type, but the effect of deicing is not obvious. Secondly, the nozzle of arc jet surface is analyzed, the three arc is better than the four arc. The four-arc is superior to the plane type, and the jet interference of even distribution of three-arc nozzle is lower than the technical distribution. Finally, the de-icing effect of the nozzle is verified experimentally. It is concluded that the temperature field jet interference of the jet simulation model with three-arc and even-number nozzle arrangement is small, the average temperature in the calculated region is higher, and the minimum residual amount of ice layer can improve the working efficiency of deicing of the whole vehicle.