two-dimensional airfoil造句

• The flutter study of a two - dimensional airfoil with asymmetry freeplay
  具有不对称间隙的二元机翼颤振研究
• This dissertation presents how to use the ultrasonic motor as an actuator to suppress the flutter of a two - dimensional airfoil section with a control surface . the ultrasonic motor , which features simple structure , high torque at low speed , small size , low weight and no electromagnetic contamination , is a promising actuator for the flutter suppression of small aircraft
  超声电机以其结构简单紧凑、转矩/质量比大、低速大扭矩、直接驱动,动态响应快、断电自锁和不产生磁场且不受外界磁场干扰等优点,有望成为一种非常有前途的作动器,用于小型飞机的机翼颤振主动抑制。
• The dissertation presents the combined theoretical , numerical and experimental studies on the experimental modeling of the actuator , the design of test rig and control system , the modeling of two - dimensional airfoil aeroelastic system , the control design of active flutter suppression , and the effect of group delay in the digital filter on the stability of aeroelastic closed - loop system
  本文通过理论分析、数值仿真与风洞实验相结合的方法,研究了超声电机作动器建模、翼段颤振实验装置和控制系统设计、二维翼段气动弹性系统建模、颤振抑制控制律设计以及数字滤波器群时延对颤振抑制闭环系统稳定性影响等问题。