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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (8): 125758.doi: 10.7527/S1000-6893.2021.25758

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Wire-driven parallel suspension mechanism of virtual flight test model in wind tunnel

WU Huisong, LIN Qi, LIU Ting, LIU Zhen, SHI Lu, WANG Xiaoguang   

  1. School of Aerospace Engineering, Xiamen University, Xiamen 361102, China
  • Received:2021-05-06 Revised:2021-07-22 Online:2022-08-15 Published:2021-07-20
  • Supported by:
    National Natural Science Foundation of China (12072304,11472234,11702232);Fundamental Research Funds for the Central Universities (20720180071)

Abstract: This paper proposes a three Degree-of-Freedom(DOF) mechanism with wire-driven parallel suspension of virtual flight test models in the wind tunnel. The upper and lower wires are used to suspend the aircraft model and incorporate a yaw turntable to simulate its three-axis attitude change to realize the free coupling and decoupling motions of three DOFs of rotation. The overall design of the suspension mechanism of the wind tunnel virtual flight test model is first conducted through the configuration design and the degrees of freedom analysis method of the screw theory. The structure of the supporting platform is then optimized to make the center of mass of the model coincide with the center of rotation of the mechanism during the movement of the mechanism to ensure the stability of the support system; Finally, the kinematics and dynamics model of the virtual flight test model with the unconstrained, reconfigurable and passive drive is established. The dynamic simulation and preliminary wind tunnel test verify the ability of the wire-driven parallel support mechanism to meet the requirements of the wind tunnel virtual flight test support system. This study provides a new idea for the development of new wind tunnel virtual flight test model support, meanwhile laying a foundation for the wind tunnel test research of the aerodynamic coupling mechanism and aerodynamic parameter identification of aircraft models.

Key words: screw theory, virtual flight, wire-driven parallel suspension, dynamics modeling, wind tunnel

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