【判断题】It is limited to reduce the speed of airplane by increasing the amount of angle of attack. Because if the critical angle of attack is exceeded, the airplane will stall.
【判断题】Lift coefficient is maximum at the critical angle of attack.
【简答题】14 CFR part 61 requires that a student pilot receive and log flight training in stalls and stall recoveries prior to solo flight. During this training, the flight instructor should emphasize that the ...
【判断题】The angle of attack is the angle
between the wing chord and the flight path. The angle of attack is always based
on the flight path, not the ground.
【单选题】Angle Of Attack(AOA)——( )?
【简答题】若将奥托循环中的第 2 步改为等压吸热Q1 ,其它各步保持不变。这是一种定压加热的四冲程循环 , 称为狄塞尔 (Diesel) 循环。试在P-V 图上画出此循环;并证明循环效率为 其中 和 分别是气体的绝热压缩比,定压膨胀比和绝热指数
【简答题】GMP 即药品生产质量管理规范,现行版为 2010 年版,实施时间是()
【简答题】设有一定量的理想气体经历如下奥托 (Otto) 循环 : 1 绝热压缩从 V1,T1 到V2,T2 ; 2 等容吸热 Q1 从 V2,T2 到V2,T3 ; 3 绝热膨胀从 V2,T3 到V1,T4 ; 4 等容放热Q2 , 由 V1,T4 回到V1,T1 。 这是一种四冲程汽油机的定容加热循环 。 试在 P-V 图上画出此循环 ; 并证明循环效率 , 其中 和 分别是气体的绝热压缩比和绝热指数
【判断题】When angle of attack increases, lift increases correspondingly.