适用于低雷诺兹数的可部署旋转发生器,由头足动物驱动的应用程序,灵感来自人工肌肉
Rabiu Mamman1, Parth Kotak1, Thilina Weerakkody1
1Department of Mechanical Engineering, University of Iowa, Iowa City, IA 52242, USA.
iScience
|December 7, 2023
概括
由人工肌肉提供动力的可部署 vortex 发电机 (VGs) 提供可适应的流量控制. 这项技术通过根据需求调整VG配置来提高小型飞机的空气动力学效率.
科学领域:
- 航空航天工程 航空航天工程
- 流体动力学 流体动力学
- 材料科学 材料科学 材料科学
背景情况:
- 被动轮发电机 (VGs) 仅限于特定的流量条件.
- 现有的主动流量控制装置在可移植性和功率要求方面面临挑战.
- 头足动物的乳头激发了新的生物模拟启动机制.
研究的目的:
- 提出和演示可部署的旋转发生器 (VGs),由扭曲螺旋的人工肌肉 (TSAMs) 驱动.
- 克服被动VG和现有的主动流量控制系统的局限性.
- 为了使VG配置能够根据需求进行调整,以获得最佳的空气动力学性能.
主要方法:
- 发展扭曲螺旋的人工肌肉 (TSAMs) 用于电热驱动.
- 将TSAM与可部署配置的旋流发生器集成在一起.
- 使用美国宇航局LS(1)-0417 GA(W) - 1风道实验在雷诺兹数量从10万到14万.
主要成果:
- 在各种流量条件下,经过证明的失速延迟和升力增加.
- 使用TSAM,使用低输入电压 (0.2V/cm) 实现了高输出应变 (2000%).
- 展示了动态部署不同VG配置的能力.
结论:
- 拟议的由TSAM提供动力的可部署VG为主动流量控制提供了一个有希望的解决方案.
- 这项技术提高了空气动力学效率,特别是在低雷诺兹数的小型无人机上.
- 该系统的适应性克服了被动设备的局限性,并改进了现有的主动流量控制方法.
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