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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >The aerodynamics of Argentavis, the world's largest flying bird from the Miocene of Argentina
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The aerodynamics of Argentavis, the world's largest flying bird from the Miocene of Argentina

机译：阿根廷中新世以来最大的飞鸟Argentavis的空气动力学

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摘要

We calculate the flight performance of the gigantic volant bird Argentavis magnificens from the upper Miocene (≈6 million years ago) of Argentina using a computer simulation model. Argentavis was probably too large (mass ≈70 kg) to be capable of continuous flapping flight or standing takeoff under its own muscle power. Like extant condors and vultures, Argentavis would have extracted energy from the atmosphere for flight, relying on thermals present on the Argentinean pampas to provide power for soaring, and it probably used slope soaring over the windward slopes of the Andes. It was an excellent glider, with a gliding angle close to 3° and a cruising speed of 67 kph. Argentavis could take off by running downhill, or by launching from a perch to pick up flight speed. Other means of takeoff remain problematic.
机译：我们使用计算机模拟模型从阿根廷中新世（约600万年前）计算出巨大的飞鸟Argentavis magnificens的飞行性能。 Argentavis可能太大（质量约70公斤），无法在其自身的肌肉力量下连续拍打飞行或站立起飞。像现存的秃鹰和秃鹰一样，阿根廷人本来会从大气中提取能量进行飞行，依靠阿根廷草原上存在的热量来为飞腾提供动力，并且它可能利用了安第斯山脉迎风坡上的高飞坡度。这是一款出色的滑翔机，滑行角度接近3°，巡航速度为67公里/小时。 Argentavis可以通过下坡运行或从高处起飞以提高飞行速度来起飞。其他起飞方式仍然存在问题。

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