查询词典 forebody

The quadratic polynomials and Kriging method are employed to construct the response surface separately, Numerical results indicate that the forebody and afterbody designed by us is of simple configuration, not only can it ensure the efficiency of propulsion system, but also have a better aerodynamic performance.

响应近似模型分别采用了二次多项式和kriging方法来构造，结果表明由本文设计的前后体外形结构简单，不仅能确保推进系统的工作效率，而且具有更好的气动性能。

The flow field of cavity with fuel supply injection located at the forebody and afterbody in trapped vortex combustor was studied using particle image velocimetry testing technology.

采用PIV技术，对凹腔供油位置不同时凹腔内的冷态流场进行对比研究。

The results show that, when the fuel supply position is located at the forebody of cavity, the jet flow of fuel supply has certain damage to vortex, and when the fuel supply injection is located at the afterbody of cavity, the jet flow of fuel supply has no damage to vortex.

实验表明，供油位置在凹腔前体，油气掺混孔处的射流对涡有破坏，供油位置在凹腔后体，油气掺混孔处射流对涡没有破坏作用，在不考虑供油方式等因素的情况下，凹腔后体供油优于凹腔前体供油。

Aiming at the strong coupling characteristic during the multi-disciplinary optimization process of hypersonic aerocraft, in order to reduce computing time and increase the feasibility of optimization process, this paper adopted the approximate method to build the responding model between disciplines, In this paper, under the condition of ensuring the engine stable and high efficient , the designing work also consider the whole aerocraft performance sufficiently from the effect of forebody and afterbody.

针对高超音速飞行器多学科设计优化过程中的强耦合特性，为了减少计算时间，提高优化过程的可行性，采用近似的方法来建立学科之间的响应模型，以此来减少每次迭代时所用的大量计算时间。

This way is quite different from the former way, which only take the forebody and afterbody as the extend of engine inlet and spout, and surround the engine to optimize the forebody and afterbody, thus neglecting the effect with the whole aerocraft layout.

本文设计工作在保证发动机稳定及高效率工作的条件下，充分考虑前后体对整个飞行器气动性能的影响，不同于以往只将前后体作为发动机进气道和喷管的延伸，围绕发动机来优化前后体外形，而忽视其对整机布局设计的影响。

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。

What you're most likely hearing is the vortex that's beginning to be shed by the forebody strakes.

你最有可能听到的是由前机身边条翼开始产生的涡流的声音。

At angles of attack less than 50°,the effect of sweep wing on side force of forebody was little.

在50°迎角以下，后掠翼对细长体头部侧向力特性的影响很小。

The results show that, both normal and tangential blowing are effective means of flow control, the influence of blowing on the cone-cylinder is strongest, followed by the influence of blowing on the elliptic forebody and on chine forebody.

实验表明，法向吹气和喷管切向吹气都是有效的控制手段，吹气对其中圆锥截面模型的影响最大，椭圆截面模型次之，对带棱截面模型影响最小。

Then, the effects of configuration parameters on performance of inlet/forebody were discussed in detail according the database built during optimization, and the result shows the cowl parameters and isolater height have more important effect on the general performance of inlet/forebody.The analysis method was developed to evaluate the performance of scramjet combustor in direct-connect test.

建立了进气道/前体性能评估方法，采用渐进优化方法在全空间和缩减空间内对进气道/前体进行了两轮优化，优化效果比较显著；根据优化中建立的数据库，深入分析了各构型参数对进气道/前体性能的影响，结果表明外罩构型参数和隔离段高度对进气道/前体综合性能有相对较大的影响。

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。