在猛禽的拉出动作期间,用于提升升高的大型动态投
Erwin R Gowree1, Joao Dinis Tome2, Alejandro Dominguez Escamilla2
1Department of Aerodynamics, Energy and Propulsion, ISAE-SUPAERO, Toulouse, France. erwin-ricky.gowree@isae-supaero.fr.
Scientific reports
|April 30, 2025
概括
猛禽在拉升机动中通过动态投来实现高起重,超过静态条件. 在实时实验和模拟中观察到的这一发现,可能会激发新的飞行器设计.
科学领域:
- 空气动力学 在空气动力学.
- 生物启发的工程是生物启发的工程.
- 流体力学的流体力学
背景情况:
- 猛禽在拉动动作时需要高升力系数,超过静态投球能力.
- 像游牧猎这样的掠食鸟上空的流动,以大型旋转结构为特征.
研究的目的:
- 为了研究猛禽拉升机动中高起重生成背后的机制.
- 为了证明动态投在实现高提升系数方面的作用.
- 探索自然启发的自主飞行器的潜在应用.
主要方法:
- 计算流体动力学 (CFD) 模拟使用直接数值模拟 (DNS) 和格子-博尔兹曼法 (LBM).
- 不稳定的雷诺兹平均纳维埃-斯托克斯 (URANS) 模拟.
- 在静态模型上对实体实验和风洞研究数据的分析.
主要成果:
- 在拉升过程中动态投球显著增加了与静态条件相比的升力系数.
- 高提升是通过动态投来实现的,以满足在负载因子大于1的条件下的要求.
- 在三角洲翼模型上的模拟复制了猛禽中观察到的旋流结构.
结论:
- 猛禽很可能使用动态投来产生必要的高起重力在拉升机动.
- 这种以前与自然观测无关的生物机制,为设计先进的空中系统提供了洞察力.
- 这些发现可以为开发能够高G机动的以自然为灵感的自主飞行器提供信息.
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