纵向大迎角飞行品质对参数的灵敏度分析  

Analysis on Sensitivity of High Angles of Attack Longitudinal Flying Qualities to Variation of Parameters

作　　者：张曙光[1] 方振平[1] 高立华[2] 

机构地区：[1]北京航空航天大学 [2]中国空气动力研究与发展中心

出　　处：《飞行力学》1999年第2期1-6,共6页Flight Dynamics

摘　　要：采用等效系统、频域、时域等多种飞行品质评价方法和准则，根据数值计算结果分析了放宽静稳定性的电传操纵飞机从小迎角到失速前大迎角纵向短周期飞行品质对于气动及惯性参数变化的灵敏度。结果表明，飞行品质对操纵导数及惯矩的变化最灵敏，对升力线斜率变化呈一定的灵敏度，而对其它参数变化则不太灵敏；灵敏度具体量值随迎角而不同。Sensitivity of short period flying qualities to variation of aerodynamic and inertial parameters is investigated from low angles of attack up through to pre stall. Main concern is on fly by wire aircraft with relaxed static stability. Flying qualities are multiply evaluated according to the equivalent low order system method and criteria in the frequency and time domains. The results show that the flying qualities are most sensitive to variations of the longitudinal control effectiveness and the moment of inertia besides a little to variation of the lift curve slope. Sensitivity to other aerodynamic parameters is negligibly small. Quantitative effects depend on the angle of attack.

关 键 词：大迎角 短周期 飞行品质 灵敏度 分析 气动参数 

分 类 号：V212.13[航空宇航科学与技术—航空宇航推进理论与工程]