Ma = 1 occurred about 0.5Dupstream the nozzle exit. A maximum Mach number of Ma = 1.3 occurred at about 0.2D upstream of the nozzle exit. From the time that the location of Ma ¼ 1 started to occur inside the nozzle, it was noticed that the Mach number at the nozzle exit ranged from 1.01 at the beginning of the Mach disk formation to about 1.1 when the