| Citation: | HU Zhenghong, PENG Miaojiao, JI Yangfeng, et al. Feasibility analysis of WDPR support cone model application in hypersonic wind tunnel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(11): 2293-2301. doi: 10.13700/j.bh.1001-5965.2016.0855(in Chinese)
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Wire-driven parallel robot (WDPR) provides a new support method for wind tunnel tests due to its effective simulation of the aircraft model's pose, and has a great application potential. This paper gives details of an investigation of stability and aerodynamic interference referring to the application of WDPR in hypersonic wind tunnel. The parallel support system with 8 wires was constructed, and the 10° cone model was selected as the test model whose position and pose can be adjusted through the wire length. The support system's stability under the action of aerodynamic force is simulated, and the wire diameter is optimized. Based on the constructed three-dimensional model, under the condition of Mach numuber is 7.8, the aerodynamic coefficient of the model suspended with WDPR at different angles of attack is calculated in CFD. The comparison of the simulation result with the result of the same model without wires and the experimental data in reference indicates that, at small angle of attack, the relative error of the aerodynamic interference caused by the wires is small, and the interference increases with the increase of angle of attack. In addition, modal characteristics of the WDPR and the crescent shape support system are analyzed and the natural frequencies of the two support systems are compared. The comparison result shows that the natural frequency and the stiffness of the WDPR are higher than those of the crescent shape support system. The academic research work of this paper provides reference to the application of wire-driven parallel support technology in hypersonic wind tunnel.
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