本试验在600mm×600mm跨超音速风洞里进行。从图1看出,高压空气通过空心支架进入高压室,然行经四个径向音速喷咀膨胀进入低压室。在音速喷咀环,端盖,活动内套之间有一对金属波纹管来密封。从低压室来的空气分成两股流:主流经四个空心整流支板的扇形空间;次流经限流喷咀穿过支板内部翼型通道,进入环形次流腔,最后和主流汇合喷出。 This test is conducted in a 600mm × 600mm supersonic wind tunnel. It can be seen from Figure 1 that the high pressure air enters the high pressure chamber through the hollow bracket and then expands into the low pressure chamber through four radial sonic nozzles. There is a pair of metal bellows in the sonic nozzle ring, end caps, movable inner sleeve to seal. The air from the low pressure chamber is divided into two flows: the main flow passes through the fan-shaped space of the four hollow rectification support plates; the secondary flow passes through the internal airfoil passage of the support plate and enters the annular sub-flow chamber and finally merges with the mainstream Out