CGull:一个非拍拍的生物灵感复合体变形无人机
Peter L Bishay1, Alex Rini1, Moises Brambila1
1Department of Mechanical Engineering, California State University, Northridge, CA 91330, USA.
Biomimetics (Basel, Switzerland)
|September 27, 2024
概括
受海的启发,CGull无人机 (UAV) 使用翅膀和尾巴的变形来实现高效的飞行控制. 这种生物灵感设计模仿了鸟类的飞行,提高了没有传统推力向量控制 (TVC) 的机动性.
科学领域:
- 航空航天工程 航空航天工程
- 生物模拟学是一种生物模拟学.
- 机器人技术 机器人技术 机器人技术
背景情况:
- 现代飞机,尽管有进步,但并没有充分利用鸟类的飞行特征,以提高效率和机动性.
- 鸟类在强风条件下表现出了显著的飞行控制能力,并且在没有先进的推力向量控制 (TVC) 系统的情况下,可以快速改变动量.
- 像和海这样的专业滑翔鸟可以用最小的飞来覆盖巨大的距离.
研究的目的:
- 设计和开发一种非飞式无人机 (UAV),其灵感来源于大黑背海 (GBBG).
- 整合翅膀和尾巴变形能力,以增强飞行控制和机动性.
- 在无人机设计中研究生物启发的变形机制的有效性.
主要方法:
- 开发了"CGull"无人机,配备了双自由度 (DOF) 变形机制,用于翅膀和尾巴.
- 翼变形将中间翼向前,外翼向后移动,模仿GBBG翼变形.
- 在MachUpX中的计算模型分析了变形对空气动力学力和时刻的影响;结构使用碳纤维复合材料外.
主要成果:
- 计算模型证明了翅膀和尾巴变形对空气动力学性能的影响.
- 该结构以鸟骨和羽毛结构为灵感,使用碳纤维复合材料外.
- 概念验证物理模型的飞行测试验证了变形机制的有效性.
结论:
- CGull无人机的变形机制成功地复制了鸟类的飞行特征以进行控制.
- 生物启发的变形提供了一种新的方法来提高无人机的机动性和效率.
- 这项研究证明了未来飞机的非折叠,变形翼设计的可行性.
相关概念视频
01:05Mechanism of Ciliary Motion
3.6K
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
3.6K
01:11Design Example: Forces in Sluice Gate
391
In hydraulic engineering, sluice gates are essential for managing water flow through channels, reservoirs, and irrigation systems. Sluice gates, acting as vertical barriers, regulate water by adjusting the gate's opening height, which changes the velocity and pressure of water flowing beneath the gate. Understanding the forces involved is crucial to designing sluice gates that can withstand dynamic pressure differences, especially when the gate is closed or partially open.
Key variables in...
Key variables in...
391
01:21Design Example: Creating a Hydraulic Model of a Dam Spillway
137
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
137
01:11Buoyancy and Stability for Submerged and Floating Bodies
1.5K
In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...
1.5K
01:17Steady, Laminar Flow Between Parallel Plates
148
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
148
00:55Composite Bodies
1.0K
A composite body is a body made up of multiple parts, connected to form a larger, unified object. Each part has its own weight and center of gravity, which must be considered to determine the center of gravity of the composite body. In cases where the density or specific weight is constant, the center of gravity coincides with the centroid.
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...
1.0K