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微猛龙 (Microraptor) 揭示了多翼早期鸟的专业滑翔能力
Csaba Hefler1, Ying Wang2, Xiaoli Wang3,4
1School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region 999077, China.
概括
早期的鸟类飞行进化了复杂的空气动力学,Microraptor使用前沿和尖端旋进行提升. 这种多翼配置是现代双翼飞行演变之前的关键一步.
科学领域:
- 古生物学的古生物学
- 空气动力学 航空动力学
- 进化生物学 进化生物学
背景情况:
- 像鸟类和昆虫这样的现代飞行者使用复杂的空气动力学来实现高效的飞行.
- 飞行的进化起源和早期鸟类的多翼配置,如微猛龙,并未得到充分理解.
- 关于多翼配置的演变和随后的丧失背后的驱动力,辩论仍在继续.
研究的目的:
- 为了研究微猛龙在滑翔飞行中的空气动力学和翼翼相互作用.
- 分析Microraptor使用的空气动力学机制及其对早期飞行进化的影响.
- 为了比较Microraptor的飞行机制与现代飞行动物的飞行机制.
主要方法:
- 在*Microraptor*中分析滑翔飞行机制.
- 流量模式的定量评估,包括前沿和尖端.
- 检查翼和翼翼相互作用.
主要成果:
- *Microraptor*的滑翔飞行表现出与现存的飞行物种一致的流动模式.
- 在前翼和后翼都观察到领先边缘,具有有益的后续相互作用.
- 在 *Microraptor* 中,一个独特的,远端膨胀的后翼促进了尖端旋的形成,并为额外的升空贡献了力量.
结论:
- 微猛龙 (Microraptor) 的进化是利用前端和尖端的流来获得空气动力学优势.
- 这些发现表明,早期的多翼类动物利用了类似的空气动力学原理.
- 微猛龙的空气动力学能力代表了飞行进化的关键里程碑.
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