高超声速飞行器横侧向气动布局准则研究

主要研究高超声速飞行器副翼控制下的横侧向稳定性问题,针对满足传统稳定性判据的飞行器出现振荡发散的现象,通过对具体的运动过程进行机理分析,给出了反映该现象的预测判据,该判据的优势在于进一步完善了横侧向闭环稳定判据,为气动布局评估和设计提供依据。最后通过具体的特征点例子说明预测判据的有效性。

The Aerodynamic Configuration Criteria for the Lateral-directional Stability of Hypersonic Vehicle

This work is concerning the problems of the lateral-directional divergent oscillation with aileron-only maneuvering control. By investigating the movement process and physical characteristics, the phenomenon of the divergent oscillation with the normal use of aileron is particularly discussed, and a new additional prediction criterion is achieved from theoretical derivation. The merit of the proposed prediction criterion lies in that it further improves the accurate of the closed-loop stability criterion, which provides the basis for the design of the aerodynamic configuration and control system. Finally, some state points along the flying track of a vehicle are provided to illustrate the accuracy of the prediction criterion.