Based on the experimental studies of models in a vertical wind tunnel, an aerodynamic solution was found in the form of an extension in front of the horizontal tail of certain geometry, allowing considerable improvement of spin characteristics and ensuring the spin recovery by various methods that is especially important for a trainer aircraft. The paper presents the results of experiments on dynamically similar free-flying models confirming the improvement of spin characteristics and experiments on weight models proving the positive effects obtained.

中文翻译：

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一种改善飞机大迎角和旋翼气动特性的方法

根据对垂直风洞中模型的实验研究，发现了一种气动解决方案，其形式是在某些几何形状的水平尾部前面延伸，从而显着改善了自旋特性，并通过各种方法确保了自旋恢复。对于教练机尤其重要。本文介绍了动态相似的自由飞行模型的实验结果，证实了自旋特性的改善，而体重模型的实验证明了所获得的积极效果。