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For the UAV, which is low speed, small scaled and nature stability, not only the variety of aerodynamicist parameter, caused by the air compression, could be neglected, but also its pitch short period mode has good static and dynamic state characteristic.

对于低速、自然稳定的小型无人机，不必考虑空气压缩效应引起的飞机气动参数变化，而且它的纵向短周期模态稳定并具有良好的动态特性。

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Stealth technique& the problem aerodynamicist faces

摆在空气动力学家面前的隐形技术

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The thesis achieves regulation of the piston wind and the important theories meaning with practical values that accelerate the research of the aerodynamicist and thermodynamics of the subway network system.

研究成果对我国进一步开展地铁网络系统与铁路隧道空气动力学和热力学研究，具有重要的理论意义和实用价值。

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The Latest Progress in Research of Automobile Aerodynamicist and Coachbuilding

汽车空气动力学与车身造型研究最新进展

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numerical simulation method is used to simulate the wind tunnel test by the combination of aerodynamicist and fluid mechanicses.

运用空气动力学与流体力学相结合的数值模拟技术，对风洞实验进行了模拟实验。

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