But it was a birdlike tail that really amped up the aerodynamics, dampening the drag from the body and wings, as well as boosting the lift that lags under vehicle weight and cargo load.

的确鸟儿尾巴一样的飞机尾部改善了空气动力学性能，缓解了机体和机翼的阻力，同时还大大的增加了向上的力，缓释了由于飞机本身和货物重量而产生的向下的力。

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This adds to the lift and allows for longer, skinnier wings and a smaller tail, reducing drag.

这将增加飞机的升力，并且因此能够允许更长、更薄的机翼，以及更小的尾翼，从而还可以减小阻力。

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Drag onto the page, then drag yellow diamonds to adjust arrowhead or tail.

拖到绘图页上，然后拖动黄色菱形可以调整箭头或箭尾。

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Did it drag its tail?

UNESCO: MEDIA SERVICES

Meanwhile at Imperial College in London, Varnavas Serhides designed a plane that has no tail by taking advantage of advanced "fly-by-wire" controls and eliminating the need for a horizontal stabilizer and vertical tail, which also reduces drag.

BBC: The futurist: Will green aeroplanes take off?