Abstract:
The cantilever support device is one of the most commonly used support devices in the 8 m × 6 m low-speed wind tunnel. However, it inevitably exerts aerodynamic interference on the test model, which can be divided into near-field and far-field interferences. Correction of the aerodynamic interference is indispensable for obtaining reliable aerodynamic performance of testing models. The two-step method is commonly used in conventional support interference tests, where only the near-field interference is usually obtained, but the far-field interference is difficult to acquire. In this paper, the aerodynamic interference of the cantilever support device is studied by flow field and force measurement of typical models in the 8 m × 6 m low speed wind tunnel (FL-13) of China Aerodynamic Research and Development Center. Based on analyses of the interference characteristics of the cantilever support device, we propose an effective method for correcting the support interference. These results provide valuable support for developing and verifying the far-field interference correction methods in the 8 m × 6 m low speed wind tunnel.