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AIRFOILS

机译:机翼

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摘要

An airfoil, or a wing, as pilots more commonly refer to it, when viewed from the wingtip looking back at the fuselage, normally offers a curved shape, with the front, or leading edge, being thicker than the rear, or trailing edge. Airfoils are, of course, also used in the construction of propellers and helicopter rotor blades. Airfoils are created in a variety of shapes, many of which originated with the National Advisory Committee for Aeronautics (NACA) in the late 1920s and through the 1930s. Some NACA airfoils come with razor-thin leading edges. Some are flat on the bottom, while others are nearly concave at the trailing edge, with others being symmetrical above and beneath the wing. Each offers very different flight characteristics and peculiarities from which engineers choose depending upon the desired performance characteristics of the aircraft they're designing.
机译:当从机翼尖端回头看机身时,机翼或机翼通常称为飞行员,通常呈弯曲的形状,其前缘或前缘比后缘或后缘厚。当然,机翼也用于制造螺旋桨和直升机旋翼桨叶。机翼的形状多种多样,其中许多起源于1920年代后期至1930年代的国家航空咨询委员会(NACA)。某些NACA机翼的前缘薄如剃刀。一些在底部平坦,而另一些在后缘几乎凹入,其他在机翼上方和下方对称。每种飞机都提供非常不同的飞行特性和特性,工程师可以根据他们要设计的飞机的所需性能特性从中进行选择。

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  • 来源
    《Flying》 |2018年第9期|18-19|共2页
  • 作者

    Rob Mark;

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  • 正文语种 eng
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