Enhancement of the vortical effect can benefit both the side force and the normal force.
涡系诱导作用增强，对侧向力和法向力都有增值。
2
A new kind of vortical structure, whose features are contrary to those of the hairpin vortex, was observed in the present experiments.
实验中发现一种新型涡结构，它的特征与典型的发卡涡正好相反。
3
Boeing wants to use existing wing and tail control surfaces that shift up and down about 20 degrees in a coordinated fashion to disrupt the vortical flow.