3D Computational Study of Axisymmetric Dual-throat Fluidic Thrust-vectoring Nozzles

Numerical studies of internal performance(discharge coefficient,thrust ratio,vector angle and thrust vectoring efficiency) on flow field of axisymmetric dual-throat fluidic thrust-vectoring nozzles were performed,and the computed data were compared with experimental data.The results indicated that for the steady secondary injection rates,vector angle reduced with increasing the primary flow pressure ratio,while discharge coefficient and thrust ratio increased with increasing the primary flow pressure ratio,and when it reached the highest,the thrust ratio gradually reduced and discharge coefficient kept steady.When the primary flow pressure ratio kept unchanged,the vector angle increased,thrust ratio kept steady and discharge coefficient reduced with increasing the secondary flow pressure ratio.