An investigation of lateral-directional departure behavior based on yawing-rolling coupled wind tunnel tests

作者：Shen, Lin; Huang, Da^*; Wu, Genxing

来源：Proceedings of the Institution of Mechanical Engineers - Part G: Journal of Aerospace Engineering , 2018, 232(16): 2989-3000.

DOI：10.1177/0954410017723361

• Departure behavior
• wind tunnel test
• yawing-rolling coupled motion
• unsteady aerodynamics
• flight simulation

The traditional aerodynamic model based on the dynamic derivative tests and the beta center dot model based on the yawing-rolling coupled motion tests are compared with respect to aerodynamic data, prediction of lateral-directional departure, and flight simulation. The study shows that the traditional model cannot fully reveal the unsteady aerodynamic characteristics and predict completely the departure behavior due to yaw-roll coupling. On the other hand, the beta center dot model can reveal the departure behavior of an aircraft at some specific coupling ratios when the angle of attack reaches a critical value or more, using the aerodynamic data obtained from the yawing-rolling coupled wind tunnel tests. The comparison of flight simulation results shows that the lateral-directional departure is closely related to the coupling ratios, and for the investigated aircraft, the departure is mainly caused by the unsteady yawing and rolling moments at the coupling ratios showing unstable features.

• 出版日期2018-12
• 单位南京航空航天大学