查询词典 aerodynamic

In the time domain, generation and propagation of aerodynamic noise are simulated using the two-step method and CAA respectively .

在时域内分别采用&两步法&及计算气动声学方法对气动噪声的产生及传播进行了数值模拟。

As the boat is going downwind, the apparent wind is less than the true wind and this, allied to the fact that the sails are not producing aerodynamic lift, serves to limit the downwind speed.

由于该船正在顺风，风明显少于真正风能和本，有关这一事实，即帆没有产生气动升力，有助于限制顺风速度。

Then, aerodynamic parameters in different flight conditions are used to imitate the uncertainty of the system, and the digital simulation of closed-loop system designed is performed. The results show that the system can accomplish asymptotic decoupling of roll angle, sideslip angle and head-on angle for aircraft, and the system is provided with the function for restraining uncertainty in the system. This illustrates that the flight control system designed has not only good decoupling characteristic, but also better robustness.

然后用不同飞行条件下的空气动力参数变化来模拟系统的不确定性，并进行闭环系统数字仿真，结果表明，所设计的控制律不仅可实现对飞机滚转角、侧滑角、迎角等的渐近解耦控制，而且对系统不确定性具有较强的抑制作用，说明系统具有较好的解耦性和较强的鲁棒性。

The normal angle of attack and bank angle were corrected according to the aerodynamic coefficient errors between the estimated values and the normal ones.

研究了气动模型存在误差情况下高超声速再入机动飞行器的制导律设计问题。

Cascades are the basic unit of heat-work conversion in turbomachinery, and therefore its aerodynamic design theory and methodology has been the key subject in the area of turbomachinery aerothermodynamics all over the world.

叶栅作为叶轮机械热功转换的基本单元，其气动设计理论与设计方法的研究，一直是国内外叶轮机械气动热力学领域关注的重点。

It ran on pure alcohol with MW injection and was tuned to 3,000 hp enough, it was believed, to propel the aerodynamic three-axle T80 up to 750 km/h on the Dessau autobahn in January 1940 during Rekord Woche (Record/Speed Week).

至于德国人的竞速经验，也不缺乏，那个DB603的来历就是陆地竞速，1940年的时候烧酒精还加注MW50，搞到3000马力，创造了750km/h的地面记录，在dessau的高速公路上，估计也是寿命极短的货色。

The flow field around NACA 0012 airfoil with software Fluent was simulated,to compare the correspondent aerodynamic performance variation before and after icing.

本文用FLUENT软件模拟了结冰后NACA 0012翼型周围流场的变化，并与结冰前NACA 0012翼型的气动性能进行了对比。

First of all lets kill some preconceived ideas on the aerodynamic effect of the brake controls by remembering the basic rules acting on airfoils, which have been experimentally determined by great people like Otto Lilienthal and theoretically proven by mathematicians such as Joukowsky.

首先我们需要抛弃我们自己所有的先前对于刹车的气动力作用的理解，仅仅记住作用于翼型上的最基本的原理――这些由伟大的先驱们如 Otto Lilienthal （奥托·李林塔尔(1848-1896)用试验证明，理论上由Joukowsky 使用数学方法所验证的理论。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。