导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2017, Vol. 38 ›› Issue (11): 121330-121330.doi: 10.7527/S1000-6893.2017.121330

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Research on feasibility of dynamic stability derivatives test of SDM with wire-driven parallel robot suspension system

JI Yangfeng, LIN Qi, HU Zhenghong, PENG Miaojiao, WANG Yuqi   

  1. School of Aerospace Engineering, Xiamen University, Xiamen 361005, China
  • Received:2017-04-16 Revised:2017-06-02 Online:2017-11-15 Published:2017-06-02
  • Supported by:

    National Natural Science Foundation of China (11472234, 11072207, 50475099)

Abstract:

This paper gives details of an experimental investigation carried out in a low speed wind tunnel to see whether it is feasible to obtain meaningful dynamic stability derivatives of the aircraft model with the suspension of Wire Driven Parallel Robot (WDPR). A six-component strain-gauge balance is installed inside the Standard Dynamics Model (SDM) to acquire relative aerodynamic parameters. The model motion control subsystem and data acquisition subsystems for the WDPR are developed. The signal of one wire tension is chosen as a reference signal to synchronously process the force signal and the displacement signal of the model, and the phase difference between them are determined in the tests of the dynamic stability derivatives of SDM with the WDPR. The identification method of the dynamic stability derivatives of the aircraft model for WDPR is developed. The prototype system of WDPR-8 is mounted in a direct low speed wind tunnel with an open test section to conduct several oscillatory motion of the SDM, such as in pitching, heave and pitching with side angle, so that the corresponding dynamic stability derivatives can be got through the tests. The solved dynamic stability derivatives of SDM agree well with the reference data, suggesting that it is feasible to use a WDPR to measure meaningful derivatives, at least for the SDM. Using a WDPR suspension system, various dynamic stability derivative tests may be completed, while in general, they must be done by several complicated rigid support systems. It can be believed that WDPR may improve test efficiency and reduce test cost.

Key words: wire driven parallel robot suspension, wind tunnel test, dynamic stability derivatives, standard dynamics model, inbuilt balance

CLC Number: