Research on Vibration Source and Transfer Path for Power Section of Low Turbulence Wind Tunnel

According to the reconstruction requirements, dynamic spectrum measurement and analysis system is built to test the vibration of power section's each component. By discussing the results of different combinations of states, the vibration law of various components changing with motor speed is studied. Both The relationship between vibration and transmission path of wind tunnel's power section and the effect of measures such as split support and shock absorption zone on reducing vibration transfer are quantificationally analyzed. Studies show that components processing and installation of low-turbulence wind tunnel's power segment comply with the expected vibration design indicators. High precision characteristic of this set of test system can be used for vibration and noise spectrum measurement and analysis in components and model tests for the same low-speed wind tunnels.