Investigation on the vane cable suspension support system in the 2.4m Transonic Wind Tunnel

The vane cable suspension support system in the CARDC 2.4 m Transonic Wind Tunnel was successfully developed for the sake of high stiffness, less support interference and fully simulation of a boat tail in this paper, the system includes test section, support system, control system, balance, standard model and attack angle mechanism. The flow filed calibration and standard model tests were conducted, interference of the support was obtained utilizing numerical and experimental methods. Aerodynamic characteristics of a typical airplane were obtained using this vane cable suspension support system, and were compared with the results obtained with single sting support. The interference of single sting was also achieved by the utilization of the suspension support and was compared with that of blade support. Results indicated that the vane cable suspension support system is successful, the short term repeatability of standard model is high, which meets σ_CL≤0.0012, σ_CD≤0.00013, σ_Cm≤0.0005 while -2°≤α≤2°. Interference of the vane cable suspension support system is low at subsonic speed, which meets ΔC_L≤0.005,ΔC_D≤0.0008,ΔC_m≤0.005 while M=0.6 and -4°≤α≤10°.