翼刀腹鳍对JL8型飞机尾旋影响的计算和分析

针对ＪＬ８型飞机尾旋振荡模态特性，结合几种尾旋试飞操纵规律对ＪＬ８型飞机翼刀腹鳍进行了探索性地研究和计算。结果表明，带翼刀腹鳍构型并不是对所有尾旋模态都会有影响，而是在一定的操纵规律下有影响尾旋运动振荡特性的作用。

Calculation and Analysis on Influences of Wing Fence Ventral Fin on JL8 Aircraft Tail Spin

Pointed at the modular characteristics of JL8 aircraft spin oscillation, combined with several flight control rules, the paper gives explorative research and calculation on the wing fence ventral fin of JL8 aircraft. The results prove that not all the wing fence ventral fin configuration will affect on all spin modules, but under specific control rules, it has function of influence on the spin movement oscillation characteristics.