Key design techniques of the low noise continuous transonic wind tunnel

In order to develop advanced aircrafts,the high-performance continuous transonic wind tunnel should be constructed to get test simulation capability and to reach a refined simulation for the aircraft in high-speed wind tunnel except that the measurement accuracy of current wind tunnel tests and the testing techniques should be improved.This paper presents the general design project of the 0.6m low-noise continuous transonic wind tunnel.The measures to reduce the flow pulsation,improve the flow quality,increase the operation efficiency and to unfold the test capability are put forward.The 0.6m wind tunnel is the pilot tunnel of the large continuous transonic wind tunnel.The high-pressure-ratio axis-flow compressor,the flexible nozzle,the low-noise test section,the high-performance heat exchanger and the second throat are utilized in the design project.