飞行器

The supersonic interacting flowfield induced by gaseous secondary flow injected into supersonic flow is typical and encountered in many fields, such as thrust vector control, gas-turbine cooling, and fuel-air premixing in scramjet engines, et al.

二次射流与超音速来流的干扰流场主要应用在推力矢量控制、飞行器气动控制、超音速燃烧和气膜冷却等方面。因为其复杂性和应用的广泛性，二次射流干扰流场多年以来一直是流体力学界的重要研究课题。

NC cloth winding machine is special equipment that wind SRM's nozzle and prats of bearing ablation , heat protection , missile cone , emitter and astro navigation aircraft parts with bakelite .

数控布带缠绕机是用碳/酚醛，高硅氧/酚醛预浸胶带缠绕固体火箭发动机喷管，耐烧蚀，防热材料零部件，导弹鼻锥，发射筒以及宇航飞行器防热零部件的专用设备。

According to the function of distributed emulator, optical information processing and image multi-object tracking system, the following three aspects were emphasized in this dissertation. Firstly, a vast virtual terrain, ground radar models and canyons were created for the distributed emulator with modeling software Creator. The radars were driven to scan during emulating and the real time terrain code was sent to Radar module. Secondly, an optics channel simulating the optics camera of a virtual aircraft was implemented with simulating software Vega. The 2-D information got from the channel was translated and sent to multi-sensor information fusion system as an optics information source. Thirdly, the dissertation studied some motion estimation methods and analyzed the factors which influence the speed and the precision of the block matching algorithms. Then an improved block matching method was proposed for image multi-object tracking system and applied in the system combined with frame difference method.

论文根据多传感信息融合实验系统中的分布式飞行仿真系统、光学信号处理器和图像多目标跟踪系统三个子系统的功能要求，具体完成了以下三方面的工作：首先利用建模软件Creator创建分布式飞行仿真系统中的大面积地形、场景中的地面雷达模型和峡谷地形，并在仿真过程中实时驱动雷达模型的扫描，同时为后续雷达仿真模块提供实时地形编码；其次利用仿真软件Vega，在分布式仿真系统中为光学信号处理器设计实现了光学通道，模拟飞行器的光学摄像机的功能，并且对由此通道获得的目标二维光学信息进行转化处理，作为光学信息源发送给后续的多传感信息融合器；最后针对图像多目标跟踪系统，在研究图像分割运动估计算法的基础上，通过分析影响块匹配算法速度和精度的因素，改进了块匹配运动估计算法，结合差分法可应用到目标跟踪系统中。

With ASFC technology, it shall be possible to increase efficiently fan/compressor pressure ratio, but also reduce the axial length and weight of the engine a well as the noise of fans. Meanwhile, it increases the flexibility sad payload of the flight vehicle, thus reducing the fuel consumption.

这一技术的采用能够大幅度提高压比，减少发动机的轴向长度和重量，降低风扇的噪音；在做功能力增加重量减轻的同时，能够增加飞行器的灵活性以及有效载荷，从而减少燃油消耗。

"Between 1981 and 1985, four shuttle orbiters were put in to service: Columbia, Challenger, Discovery, and Atlantis."

在1981年和1985年，有四架轨道飞行器进行了服务，它们是「哥伦比亚号」、「挑战者号」、「发现者号」和「亚特兰提斯号」。

"Between 1981 and 1985, four shuttle orbiters were put into service: Columbia, Challenger, Discovery, and Atlantis."

在1981年和1985年，有四架轨道飞行器进行了服务，它们是「哥伦比亚号」、「挑战者号」、「发现者号」和「亚特兰提斯号」。

It was the first of several orbiters that are surveying the cold, barren lannscape, looking especially for signs of water, and relaying signals f rom the two robotic rovers crawling over the terrain .

它是那些探测这块寒冷贫瘠的土地的卫星中的第一颗，专门用来探索水的迹象，并通过两个缓慢运行于火星表面的飞行器把信号发送回地球。

Orbiters and one European satellite circling Mars.

这个新飞行器将与另外两个围绕火星飞行的人造卫星和一个欧洲探测器联手。

I can't wait for the scientists in a few months to be able to take control of the orbiter and see what we find.

我等不急科学人员要几个月后才能控制飞行器，看我们所发现的东西。

Each orbiter was designed to be reused up to 100 times.

每个飞行器设计为可以重复使用一百次。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新