查询词典 angle of attack

This upward moving air will momentarily increase the wing's angle of attack possibly beyond the stall angle of attack.

在越过失速攻角时，上层流动的空气会暂时的增加伞翼的攻角。

Angle of Attack The angle between the wing and the relative wind.

就是机翼与相对空气之间的角度。

O ANGLE OF ATTACK, The angle

发动机的一部分。

What can cause my angle of attack change? if my angle of attack changed, what should I do to maintain the altitude?

如果我的飞行速度改变了，我应采取什么样的措施来保持高度？

The improved e-N method can also yield results well agree with those obtained by DNS.4 The transition prediction for boundary layers on cones with different key parameters such as angle of attack, cone half angle and the Mach number of the coming flow, have been made, to show the reliability of the modified e-N method.5 For the calculation of base flow, boundary layer equations can be used in the case of small angle of attack.

但是它要依赖于对初始扰动的正确预估，这显然又取决于更多飞行数据的积累和分析。e-N方法的转捩预测结果与直接数值模拟得到的结果也吻合较好。4通过对不同来流攻角、不同半锥角和不同马赫数的三维圆锥边界层的转捩位置进行预测，证实了改进的e-N方法对于三维边界层转捩预测是可靠的。5对于基本流的计算，边界层方程可以用于小攻角的情况，其计算量远远小于直接数值模拟，但背风面的剖面不可靠。

The maximum of the L/D appear at about 30-degree angle of attack. The bugle of the reentry module drops the trim angle. Pyrochemistry reaction largen Ca, Cn, diminish L/D and the trim angle. The variational tendency of aerodynamic characters with angle of attack in high altitude (higher than 105km) is different from that of in low altitude (lower than 105km).

返回舱凸出物使配平攻角减小；高温热、化学非平衡效应使轴向力和法向力系数有所增大，升阻比在数值上有所减小，配平攻角略有降低；返回舱0°～180°攻角范围内的气动力特性高空(105km以上)随攻角的变化趋势与低空(105km以下)的变化趋势不同。

The eff ect of launching force and angle of attack on the misˉ sile trajectory was presented, it is indicated that launching force just accelerates the movement of the missiles while the angle of attack change have a greater impact on movement paramet ers of the missile.

分析挂架弹射力和载机迎角变化对分离过程运动参数的影响，发现挂架弹射力仅是加快了导弹的运动，而迎角的变化对导弹运动参数有较大影响。

The experimental velocities cover subsonic,transonic and supersonic flows,and the content includes:(1) flow over flat plate,revolution body and wing with riblets surface at zero angle of attack;(2) the effect of pressure gradient,angle of attack and slide angle;(3) the burst characteristics,characteristics of turbulence,the streak structure in the near wall region and the drag reduction mechanism.

内容涉及沟槽面平板、旋成体、机翼等在压、跨、超音速流动情况下的实验研究成果；压力梯度、攻角、侧滑角等的影响；湍流猝发特性、紊动特性、近壁区带条结构的特征及减阻机理等方面的工作。

Through the computer simulation,analyzing the effects of pitch angle,roll angle,roll angle rate,sink rate,angle of attack and side angle on the track of ejection and save life height .

为提供弹射座椅多模态控制输入参数选择的理论依据，通过计算机仿真，比较分析了俯仰角、滚转角、滚转角速度、下沉率、迎角、侧滑角等弹射启动时飞机状态参数对弹射轨迹和安全救生高度的影响。

Firstly, the control of reentry phase and the model of RCS jets are presented. Then the flight control system is divided into two subsystems based on the time-scale separation principle. The fast states subsystem corresponds to the three body-axis angular rates, the slow states subsystem controls the angle-of-attack, sideslip angle and the rate of the bank angle about the velocity vector. Lastly, the proportional-plus-integral feedback is designed to increase the system robustness.

首先，分析了SRLV再入段的数学模型，并给出了反作用推力控制系统的控制模型；其次，将非线性动态逆方法与时标分离原则相结合，考虑飞行器姿态控制系统的外环角回路的慢变特性和内环角速度回路的快变特性，独立设计了两个回路的控制律；最后，为了增强系统的鲁棒性，分别在两个回路中引入了比例－积分反馈，有效地抑制了干扰力、力矩和非线性对消带来的逆误差。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。