Impact of the Angle of External Flow on the Performance of Counterflow Thrust Vectoring Nozzle

The performance and structure of the internal flow field of counterflow thrust vectoring nozzle under the impact of the external flow were studied by numerical simulation, considering the angle of external flow on the vectoring angle and the mass flux ratio of secondary flow. The results show that, when the external flow is of the same Mach number and the angle of the external flow increase in positive way, the vectoring angle will increase and the mass flux ratio of secondary flow will increase in forward flow direction. When the angle of the external flow increases in negative way, the vectoring angle will increase in backward flow direction.