According to the requirements of the cone cavity ignition and the flame crossover in the afterburner

the fan nozzle for the cavity ignition and flame crossover was designed

and the corresponding atomization test was carried out to study the effect of the fuel supply pressure difference

fan angle and the fan exit height on the discharge and atomization characteristics of the fan nozzle and the effect of the temperature

speed and fuel supply pressure difference of the lateral airflow on the penetration depth and the Sauter mean diameter (SMD) under afterburning environment. Weighing method was used to test the discharge coefficient of the fan nozzles. And the Malvern laser particle size analyzer and high speed camera were used to measure the SMD of the droplets

spray angle and penetration depth

respectively. Results suggested that: (1) with the increase of fuel supply pressure difference

the discharge coefficient decreased first and then became insensitive to fuel supply pressure difference. (2) Under the same fuel sypply pressure difference

the discharge coefficient and spray angle increased with the increase of fan angle. (3) With the increase of fan exit height

the atomization effect became better. (4) In addition to the above mentioned results

the mounting position had less effect on the atomization characteristics of the fan nozzles. (5) As the oil supply pressure difference increased

the penetration depth of the fan nozzle increased

and the SMD decreased. (6) The greater lateral airflow speed and temperature

the smaller the penetration depth

and the oil mist field was closer to the downstream section. (7) As the lateral airflow temperature increased

the SMD decreased.