飞机大迎角气动数据的组成与应用

包含非定常气动力在内的由各种方式获得飞机大迎角气动数据,必需经过合理的组合才能形成完整可信的飞机大迎角数据。通过对过失速区飞机运动特点的分析,提出了组成总气 新方法。

Aero Datas Integration and Application of the Airplane at High Angle of Attack

In this paper, different aerodynamic data sources have been studied in order to identify their influences on airplane high angle of attack motions and post stall maneuver characteristics. A new accumulation method is adopted. Computer simulations of post stall maneuvers show that in those so called "dynamic attainment" PSMs, unsteady effects must have reduced the effect of unstable intended asymmetric aerodynamic moments to enough small, so that in the cause of the maneuvers they can not change the aircraft movement from symmetry a lot before it comes back to normal state, regains its stability and control. In controlled PSMs, unsteady aerodynamics have not so much significant Influences on aircraft motions as in the formal.