摘要
包含非定常气动力在内的由各种方式获得的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，提出了组成总气动数据的新方法。应用此数据进行的过失速机动仿真表明，非定常气动力和动态的动力学作用在飞机进行“动态到达”的过失速机动中减弱了飞机横航向偏离的趋势，可使飞机恢复到通常的可控飞行状态。而飞机在需要持续飞行在超大迎角区的过失速机动中，必需使用推力矢量来抑制大迎角特有的横航向偏离。
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.
出处
《飞行力学》
CSCD
北大核心
1997年第1期1-7,共7页
Flight Dynamics
基金
国家航空科学基金
关键词
大迎角
气动数据
飞机空气动力学
Aerodynamic data base
Rotary balance test
Forced oscillating Test
Post stall maneuver
