有效载荷(计算)
无人机
微型飞行器
空气动力学
多转子
航空航天工程
控制理论(社会学)
纵向静稳定性
工程类
飞行动力学
欠驱动
机器人
翼
机翼载荷
功率消耗
飞行操纵面
功率(物理)
模拟
计算机科学
攻角
人工智能
计算机网络
遗传学
物理
控制(管理)
量子力学
网络数据包
生物
作者
Songnan Bai,Qingning He,Pakpong Chirarattananon
出处
期刊:Science robotics
[American Association for the Advancement of Science (AAAS)]
日期:2022-05-11
卷期号:7 (66)
被引量:2
标识
DOI:10.1126/scirobotics.abg5913
摘要
Among small rotorcraft, the use of multiple compact rotors in a mechanically simple design leads to impressive agility and maneuverability but inevitably results in high energetic demand and acutely restricted endurance. Small spinning propellers used in these vehicles contrast with large lifting surfaces of winged seeds, which spontaneously gyrate into stable autorotation upon falling. The pronounced aerodynamic surfaces and delayed stalls are believed key to efficient unpowered flight. Here, the bioinspired principles are adopted to notably reduce the power consumption of small aerial vehicles by means of a samara-inspired robot. We report a dual-wing 35.1-gram aircraft capable of hovering flight via powered gyration. Equipped with two rotors, the underactuated robot with oversized revolving wings, designed to leverage unsteady aerodynamics, was optimized for boosted flight efficiency. Through the analysis of flight dynamics and stability, the vehicle was designed for passive attitude stability, eliminating the need for fast feedback to stay upright. To this end, the drone demonstrates flight with a twofold decrease in power consumption when compared with benchmark multirotor robots. Exhibiting the power loading of 8.0 grams per watt, the vehicle recorded a flight time of 14.9 minutes and up to 24.5 minutes when equipped with a larger battery. Taking advantage of the fast revolving motion to overcome the severe underactuation, we also realized position-controlled flight and illustrated examples of mapping and surveillance applications with a 21.5-gram payload.
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