试飞员肯·柯林斯(他在51区的飞行代号为肯·科尔马)在低空测试飞机的亚音速发动机时遭遇了可怕的事故。
Things went horribly wrong for test pilot Ken Collins (flying under his Area 51 code name Ken Colmar) when testing the plane's subsonic engines at low altitude.
此时，为了转移人们对此事件的注意力，波音宣布高亚音速巡航机，甚至夸大其辞。
When Boeing tried to distract attention from this flop by announcing a near-supersonic long-haul jet dubbed the sonic Cruiser, it fell even flatter on its face.
波音公司的“亚音速终极绿色飞行器研究”（SUGAR）团队检验了5个概念。
The Boeing Company's Subsonic Ultra Green Aircraft Research, or SUGAR, team examined five concepts.
在几千米外，主弹头分成几十个小弹头，然后从亚音速状态下加速到大约三倍音速的速度。
the warhead separates a few dozen kilometres away and then accelerates from almost the speed of sound to about three times as fast.
这些现象也反映了燃烧室内亚音速流场的性质。
These phenomena are controlled by the nature of the subsonic flow field.
空客，也许是现使用中最先进的亚音速客机，它们的翼型设计使得升力沿客机的宽度伸展开来。
The Airbus, perhaps the most advanced subsonic airliner in use, has wings designed so that lift is spread along their breadths.
但在可预见的未来，亚音速飞机的形状不会发生根本的改变。
But it is unlikely that the shape of subsonic aircraft will change radically in the foreseeable future.
因此，有必要对亚音速飞行器的导航方案进行改进。
Therefore, it is necessary to improve the current navigation means of the subsonic vehicle.
对离散方程采用线超松驰方法迭代求解，在亚音速与超音速气流共同存在的出口边界分情况进行了处理。
A special treatment is made in outlet boundary in which the subsonic and supersonic flow exist commonly. Block-Line-Gauss-Siedel method is used to solve THD differencing equations.
不过，后休克的流动，在射流仍会亚音速。
However, after the shock the flow in the jet will still be subsonic.
分别对可压缩叶栅流场的亚音速和跨音速流动进行了数值模拟计算。
Some cases of compressible flow as well as incompressible flow are presented.
简要地介绍了亚音速飞机压力分布测量的飞行试验技术，并给出了部分试验结果。
Technique of in flight measurement of pressure distribution on a subsonic transport aircraft is introduced. Some flight test results are presented.
本文介绍了一个全尺寸十级亚音速轴流压气机试验台，并给出了该实物压气机旋转失速和喘振的试验结果。
The present article describes the pilot stand of a full scale ten-stage subsonic axial-flow compressor and presents the test results of the rotating stall and surge obtained therefrom.
运用数值方法模拟了细长体在不同攻角条件下亚音速绕流的背涡结构，探讨了非对称涡流的气动力特性。
Subsonic vortical flows over a slender body at different angles of attack were simulated numerically, and the aerodynamic characteristics of asymmetric vortical flow were also investigated.
在颤振特性分析中所需要的广义气动力是根据亚音速非定常升力面理论，采用马蹄涡—振荡压力偶极子格网法计算的。
The generalized aerodynamic force required in analysis is calculated by using horse shoe vortex— vibrational pressure doublet grid method, based on theory of subsonic unsteady lifting plane.
具有任意曲线前缘的亚音速升力面的气动敏感性导数由核函数法给出。
Aerodynamic sensitivity for subsonic lifting-surface with arbitrary curved leading edge is evaluated by kernal function method.
文中还提出了压气机叶栅在高亚音速、跨音速工作条件下，修正气体压缩性影响的新的图线方法。
In this paper, a new curvilinear method for correcting the gaseous compressible effect under higher subsonic and transonic intake condition upstream of the cascade is. presented.
本文介绍了双斜切进口进气道亚音速管道的设计方法，着重提出了设计中遇到的几个难点和解决办法。
This paper presents a design method of diffuse duct of a Caret inlet, especially focus on several key points and how to resolve them.
给定不同型式的进口边界层，在两种不同亚音速条件下对一平面扩压静叶栅的弯叶片流场进行了数值模拟。
For several given types of inlet boundary layer, a numerical investigation on flow field of bowed stator vanes under two inlet subsonic Mach Numbers was carried out.
考虑横观各向同性压电材料中螺位错的亚音速运动问题。
The moving problem of a screw dislocation at subsonic velocity in a transversely isotropic piezoelectric medium is considered.
本文介绍了以涡轮喷气发动机为动力装置的飞航式战术导弹的一种新型高亚音速嵌入式、半嵌入式进气道的设计与试验研究结果。
The design and test results of the new type high-subsonic speed submerged and semi-submerged intakes for cruise missile propelled by a turbojet engine have been introduced.
本文提供了亚音速升力面理论的一种新解法，可求解亚音速流中有限翼展机翼的载荷分布。
A new method based on lifting-surface theory is presented determining the load distributions on finite wings in subsonic flows.
给出了一种亚音速方转圆扩压器的设计方法，并对中心线形状、型面变化规律和扩张角等进行了选择和说明。
For matching turbine work condition, designed a diffuser that transformed square to round, chose Central Line and shape changed method, defined diffuser expanding Angle.
可以用它来计算亚音速时弹性飞机的升力分布及11个主要的纵向气动导数。
This method can be used to evaluate the lift distribution and 11 main longitudinal aerodynamic derivatives of elastic aircraft at subsonic speeds.
即使中国地区亚音速飞机排放的NO_x增加一倍，这个影响仍然比较小。
When subsonic aircraft NOX emission over China is doubled, its influence is still relatively small.
在进行亚音速气动分析时，应用线化速度势理论计算运载器的气动力系数，而后进行回归分析，得到运载器亚音速飞行时的气动特性模型。
For subsonic aerodynamic analysis, Linearized Velocity Potential Theory is used to evaluate the aerodynamic coefficient, and we can get subsonic aerodynamic model of vehicle by Regression analysis.
以亚音速风洞为监测对象，介绍容错技术在风洞试验中的应用原理和方法。
The application principle and method of tolerant technique to wind tunnel experiment are introduced. It regards the subsonic wind tunnel as a monitored object.
提出了一种可解决超音速、亚音速、跨音速、冲击波共存的流场计算方法，即变形流体网格两步法。
The paper presents a new computational method named two steps various shape FLIC method, applied for the existence of the supersonic , sub critical sonic , transonic, shock wave.
提出了一种可解决超音速、亚音速、跨音速、冲击波共存的流场计算方法，即变形流体网格两步法。
The paper presents a new computational method named two steps various shape FLIC method, applied for the existence of the supersonic , sub critical sonic , transonic, shock wave.
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