单词vortex ring
na.: (喷烟所成的)涡环
网络: 涡圈；涡流环；涡旋环
涡旋环
涡流环
(喷烟所成的)涡环
The range of yawing rate when turning left in hover is calculated, where the tail rotor might get into vortex ring.
根据右侧飞试验结果，估算出样机悬停回转时尾桨处于涡环状态的偏航角速度范围；
Helicopter vortex-ring state influence flight safety badly, whose flow characteristic is very complex and hard to calculate accurately.
直升机涡环状态严重影响飞行安全，其气流特性非常复杂，难以准确计算。
The bigger and faster spinning a vortex ring is, the stronger the pressure difference.
更大和更快的纺丝一vortexring是，强大的压力差异。
The Gao-Xin criterion of vortex ring is compared with some overseas criteria.
将试验结果与国内外的涡环状态判据进行了对比。
Through 5 to create a vortex ring shape form of stairs.
通过5个环形造型楼梯营造出旋涡形式。
A reasonable criterion of vortex ring state boundary for helicopter is acquired based on model rotor tests.
通过模型旋翼试验得到了合理的直升机涡环边界判据，并由此计算得到了直升机通用涡环状态边界。
Research of vortex-ring state of helicopter flight
直升机飞行中的涡环状态研究
Flight Test Investigation of Helicopter Vortex-Ring State Boundary
直升机涡环状态边界的飞行试验研究
A vortex ring model of large-scale structures for simulation of turbulent jets in crossflow
湍流横向射流大涡模拟及大尺度结构的涡环模型
Investigation of Blade-pitch Effect on Helicopter Vortex-ring State Using BP Method
使用BP算法研究桨叶安装角对直升机涡环状态的影响