在蝙蝠和蝙蝠灵感的机器人中向上拍打的翅膀提供了高效的升空生成
Xiaozhou Fan1,2, Alberto Bortoni2, Siyang Hao1
1Center of Fluid Mechanics, School of Engineering, Brown University, Providence, RI, USA.
Journal of the Royal Society, Interface
|February 19, 2025
概括
这项研究揭示了翅膀折叠如何提高蝙蝠飞行效率. 在上升过程中拍翅膀会产生空气喷气,提高起重力,并为拍翅膀机器人提供新的策略.
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.
- 机器人技术 机器人技术 机器人技术
背景情况:
- 鸟类和蝙蝠的高效飞行依赖于复杂的翅膀关节.
- 在飞机飞行中观察到的腹腔翅膀拍打,具有潜在的空气动力学益处,尚未完全理解.
研究的目的:
- 为了研究可变的翅膀折叠和拍打飞平台的空气动力学影响.
- 为了探索升空和动力经济的变化与翅膀折叠大小和斯特鲁哈尔数.
主要方法:
- 开发了一个两度自由度的飞翼平台,具有可变的翅膀折叠.
- 采用准稳定建模,直接力/功率测量和粒子图像速度测量 (PIV) 实验.
- 在一系列斯特劳哈数 (St = 0.2-0.4) 的风洞测试中进行了风洞测试.
主要成果:
- 在上升过程中拍打翅膀会产生空气喷气,显著增加起重.
- 升力随着翅膀折叠幅度单调地增加.
- 电力经济表现出复杂的行为,最佳的折叠策略因斯特劳哈数而异.
结论:
- 翅膀折叠和拍手提供了不同的策略,用于升空增强和推进在飞行.
- 这些发现为设计更高效的生物灵感飞机器人提供了洞察力.
- 确定了破坏对称性的升力增强和基于附属的喷气推进作为关键机制.
相关概念视频
Convergent Evolution
27.4K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
27.4K
Lift
37
Lift is a fundamental aerodynamic force that acts perpendicular to the direction of airflow. It plays a central role in achieving and sustaining flight and in stabilizing various vehicles. Lift primarily originates from pressure differences created across surfaces, such as an airfoil. A lower pressure region forms above the wing, while a higher pressure region forms below it, generating an upward force. This differential results from the shape and orientation of the airfoil, enabling the wing...
37
Electro-mechanical Systems
912
Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
912


