Reliable prediction of aircraft post-stalled dynamics is entirely dependent on the adequacy of the aerodynamic model. A mathematical model of aerodynamic characteristics of a light aircraft is developed for a wide range of angles of attack, sideslip, and angular rates. It is augmented by a model of uncertainties based on a set of repeated measurements of static aerodynamic characteristics. The effect of aerodynamic uncertainties on steady-state and oscillatory spin modes is directly calculated using a continuation on a parameter technique. The influence of aerodynamic uncertainties on spin entry/recovery is also analyzed.

中文翻译：

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自旋参数对飞机空气动力学模型不确定性的敏感性

飞机失速后动力学的可靠预测完全取决于空气动力学模型的充分性。轻型飞机空气动力学特性的数学模型是针对大范围的攻角、侧滑和角速率开发的。它通过基于一组静态空气动力学特性的重复测量的不确定性模型得到增强。空气动力学不确定性对稳态和振荡自旋模式的影响是使用参数技术的延续直接计算的。还分析了空气动力学不确定性对自旋进入/恢复的影响。