Research survey of technique about wire-driven parallel suspension systems used in forced oscillation experiments in low-speed wind tunnels for obtaining dynamic derivatives

Abstract

It is pointed out that there are two key issues that should be tackled deeply if the wire-driven parallel suspension system is introduced to be used in forced oscillation experiment in low-speed wind tunnels for obtaining dynamic derivatives, i.e., the implementation of the single-degree-of-freedom oscillation of the model of aircrafts as well as the accurate identification of the dynamic derivatives. In order to solve the two key issues, the related scientific and technological problems are summarized, as following: (1) In the premise of satisfaction of the desired requirements of forced oscillation experiments, the mechanism design of the wire-driven parallel suspension system is given.(2) The strength, stiffness, dynamic characteristics, measuring precision and control precision should be satisfied as well.(3) Also the aerodynamic interference of the system should be eliminated as much as possible. The coupled fluid-solid interaction between the wires and the streamline flow should be tackled well and the suitable 6-element force-measuring system to measure the force and moment of the streamline flow should be used. © 2011 Springer-Verlag.