发动机

In this paper a new method based on neural networks is proposed for aeroengine adaptive real time modeling.

本文提出了一种新的基于神经网络的发动机自适应实时模型的建模方法。

An engine cyclic variation model has been built by using the residual gas temperature for the n-th cycle as the input of the model, through constant pressure intake process, adiabatic compression process, constant volume combustion process, adiabatic expansion process, adiabatic blow down process and constant pressure exhaust process to approximate the thermodynamic processes in the cylinder, finally the residual gas temperature for the (n+1)-th cycle can be estimated.

基于循环间变动的排气温度建立了一个发动机循环变动模型。在这个模型中，第n个循环的排气温度作为模型的输入，通过定压进气过程、绝热压缩过程、定容燃烧过程、绝热膨胀过程、定容放热过程和定压排气过程来近似汽缸内的热力学过程，最后得出第n+1个循环的排气温度。

But when the test load is increased, the wear mechanism is dominated by spalling, and the test material weight loss is raised, therefore, the amount of hard phases can be decreased advisably. high carbon high alloy steel, hard phase, friction and wear

以航空发动机供油系统用Cr18Mo16V钢为原料，研究其基体和碳化物硬质点的结构和组成，并分析

We want to invest in cars, in engines, in aerodynamics, in the technology of the cars.

我们希望投资于汽车，发动机，空气动力学，在技术的汽车。

The visual inspection based on an endoscope has played an important role in modern fault diagnosis of aeronautic engines.

基于内窥镜的视觉检测技术在现代航空发动机故障诊断中发挥着重要的作用。

The plane lifts quickly, pass through aerosphere, at this moment air man shuts engine, passenger and unit staff have weightlessness feeling, after this kind of case lasts about two minutes, the plane returns aerosphere, the plane is quickened afresh.

飞机迅速升高，穿越大气层，这时飞行员关闭发动机，乘客和机组人员有失重感，这种情形持续大约两分钟后，飞机返回大气层，飞机重新加速。

We will produce this kind of engine, this will be the affirmation

我们将生产这种发动机，这是肯定无疑的

The designing way of this paper about the forebody and afterbody of aerocraft is based on the wave-rider theory, so design the aerocraft upper and down surface separately, besides keeping the length and thickness of forebody and afterbody constant, to some extent ensure the whole aerocraft design target and avoid the conflict with other disciplines, The flow solver takes use of Euler equations, combining with the technique of the unstructured dynamic meshes.

文中对飞行器前后体设计思路基于高超音速乘波体的思想，将飞行器上下表面进行分离设计，在前后体的长度厚度以及发动机的位置保持不变的条件下，较大程度避免了飞行器整体外形布局的改变，从而一定程度上保证了总体设计的目标，大大缓和了与飞行器其他学科设计时的冲突。

The changes allow current engines to go from idle to full afterburner in as few as two seconds.

这一变化允许现在的发动机从空转状态到完全加力状态的所需的时间只要2秒钟。

As far as envelope expansion goes, we have conducted engine transients up to maximum afterburner from takeoff to 30,000 feet.

随着飞行包线的拓展，我们已经能够在从起飞到爬升至30，000英尺的过程中将发动机瞬态提升至最大加力。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。