This is 20,000 feet higher than most subsonic airliners.
这比多数的次音速客机要高上两万英尺。
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.
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。
The starting process of wind tunnel, involving turbulence, shock wave, low subsonic and high supersonic mixing flows, is a very complex transient process.
超声速风洞的起动过程涉及到湍流、激波及低亚声速和高超声速混合流动，是一个非常复杂的瞬态过程。
This paper presents a vortex lattice method which is suitable for the calculation of subsonic longitudinal and lateral aerodynamic characteristics of aircraft.
本文介绍了一种涡格方法，它适用于亚声速飞机的纵横向气动特性计算。
This paper introduces the MYS-Type subsonic gas burner.
本文介绍了MYS 型煤气亚高速烧嘴的研究成果。
Supersonic aircraft will not make all subsonic aircraft obsolete.
超音速飞机不会使所有亚音速飞机都淘汰。
The other is deflagration, or subsonic burning, which causes little or no blast.
另一种是爆燃，或者又称亚音速燃烧，这种方式很少产生爆炸。
Therefore, it is necessary to improve the current navigation means of the subsonic vehicle.
因此，有必要对亚音速飞行器的导航方案进行改进。
The subsonic vehicle has the characteristics of low speed, longtime flight and low dynamics.
亚音速飞行器具有飞行速度低，飞行时间长，低动态的特点。
The intake with plenum bypass is a new type subsonic intake for civil medium range aircraft.
分析了支线民航机一种新型亚音速带有腔室旁通道的进气道的几何形状设计和气动试验结果。
When subsonic aircraft NOX emission over China is doubled, its influence is still relatively small.
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。
But it is unlikely that the shape of subsonic aircraft will change radically in the foreseeable future.
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。
Furthermore we discussed the method of defining the optimal contour in the supersonic and subsonic regions.
并讨论了亚音速段和超音速段最佳轮廓线的确定方法。
It can be used for various ventilated wall or solid wall wind tunnel tests in subsonic or transonic ranges.
方法可用于各种通气壁或实壁风洞的亚跨音速试验。
A new numerical method for predicting the profile loss of turbine blades in subsonic and supersonic flows is presented.
给出了一个计算亚、跨音涡轮叶栅叶型损失的数值计算方法。
The moving problem of a screw dislocation at subsonic velocity in a transversely isotropic piezoelectric medium is considered.
考虑横观各向同性压电材料中螺位错的亚音速运动问题。
In this paper, the flow field of the supersonic diffuser and the subsonic-supersonic ejector is simulated by numerical method.
本文采用上述数值算法模拟了超声速扩压器和超声速引射器内流场。
A new method based on lifting-surface theory is presented determining the load distributions on finite wings in subsonic flows.
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。
Aerodynamic sensitivity for subsonic lifting-surface with arbitrary curved leading edge is evaluated by kernal function method.
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。
The multivariate splines were adopted to identify the drag coefficient from subsonic to supersonic, which can keep the curve smooth.
采用多段样条方法提取阻力系数，可以保证阻力曲线的一阶连续性，且能准确地辨识出从亚音速到超音速下的阻力系数。
The progress in subsonic and supersonic combustions has been attained, but the ejecting mode and mode match of RBCC has just been begun.
国内已制定了研究计划并正在开展，其中亚燃和超燃模态的研究取得了相当的进展，但引射模态以及模态匹配的研究还刚刚起步。
The unsteady flow field near the leading edge of an oscillating sweptback wing is obtained by using 3-D subsonic lifting surface theory.
本文应用三元亚音速升力面理论求出了后掠翼前缘附近的流场。
Panel Method was used for subsonic aerodynamic analysis, and the Modified Newtonian Impact Theory was used for hypersonic aerodynamic analysis.
亚声速气动力采用面源法计算，高超声速气动力采用修正的牛顿流理论计算。
An ABB variable speed drive system is to power the giant fan that generates subsonic wind speeds at Boeing's flagship wind tunnel in Philadelphia.
ABB的一个变速驱动系统正在为波音公司在费城的旗舰风洞的大型风扇提供动力，以制造出次音速风速。
This method can be used to evaluate the lift distribution and 11 main longitudinal aerodynamic derivatives of elastic aircraft at subsonic speeds.
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。
Using the above method, numerical simulations are implemented for supersonic, transonic and subsonic flows around three-dimensional open cavities.
运用此方法，本文数值模拟了三维开式空腔的超声速、跨声速、亚声速流动。
Technique of in flight measurement of pressure distribution on a subsonic transport aircraft is introduced. Some flight test results 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。
The application principle and method of tolerant technique to wind tunnel experiment are introduced. It regards the subsonic wind tunnel as a monitored object.
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。
There are essential differences between supersonic combustion and subsonic combustion, so the characteristic variables of model had catastrophe characteristic.
不同的燃烧模态存在本质的差别，故在模态转换时通常具有突变特性。
The optimum design of Controlled Diffusion Airfoils (CDA) is one of the main research fields in subsonic and transonic profile design for multistage compressor.
可控扩散叶型（CDA）的优化设计是目前国外对亚音、跨音速压气机叶型研究的主要内容之一。
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