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.
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 subsonic vehicle has the characteristics of low speed, longtime flight and low dynamics.
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.
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.
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.
未来飞行器团队报告：亚音速概念。
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.
对此提出一改进梯度方法，并计算了某型战斗机从亚音速三维转弯升高到超音速的最短时间飞行轨迹。
This article presents a modifying gradient method, and the fastest 3-D turning trajectory from subsonic to supersonic is calculated.
社会经济学减排方案对于亚音速和超音速飞行器进行了评估和报告。
The socioeconomic issues associated with mitigation options are assessed and reported for both subsonic and supersonic fleets.
社会经济学减排方案对于亚音速和超音速飞行器进行了评估和报告。
The socioeconomic issues associated with mitigation options are assessed and reported for both subsonic and supersonic fleets.
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