Results 61 to 70 of about 528 (167)

A Degradable Bioinspired Flier with Aerogel‐Based Colorimetric Sensors for Environmental Monitoring

Advanced Science, Volume 13, Issue 15, 13 March 2026.
Biodegradable fliers are developed inspired by Tipuana tipu samaras, integrating cellulose nanocrystal aerogel (CNCa) sensors loaded with natural dyes for pH and ammonia detection. The lightweight, degradable fliers mimic natural morphology and aerodynamics, offering an eco‐friendly, scalable solution for in situ environmental monitoring after passive ...
Gianpaolo Gallo, Ruowen Tu, Carlo Filippeschi, Stefano Mariani, Barbara Mazzolai   +4 more
wiley   +1 more source

Active Disturbance Rejection Attitude Control for a Bird-Like Flapping Wing Micro Air Vehicle During Automatic Landing

IEEE Access, 2020
To solve the attitude control problem of bird-like flapping wing micro air vehicles (FWMAVs) during automatic landing, an active disturbance rejection control (ADRC) architecture is proposed in this paper.
Shaoran Liang, Bifeng Song, Jianlin Xuan
doaj   +1 more source

Design Challenges to Expand the Functionality of Drones: Deformable Rotorcraft and Nature‐Inspired Flapping Drones

Advanced Intelligent Systems, Volume 8, Issue 3, March 2026.
This review systematically analyzes deformable drones, including extendable, foldable, and tilting configurations, along with nature‐inspired flapping rotorcraft. By classifying deformation principles and structural mechanisms, design trade‐offs, functional capabilities, and future development potential are highlighted.
Ju‐Hee Lee, Sumin Jung, Jinwoo Jang, Yeji Han, Minchae Kang, Jihun Seong, Suyeon Seo, Eunsol Park, Haesol Kwak, Min‐Woo Han   +9 more
wiley   +1 more source

Research on Improvement Methods for Driven System of Bio-Inspired Aircraft to Increase Flight Speed

Drones
The flapping-wing ornithopter is an aircraft that imitates the flight of birds in nature. It has significant potential and value in various fields such as surveying, search and rescue, military reconnaissance, and unmanned warfare, due to its biomimetic ...
Dong Xue, Runkang Li, JiaYuan Liu
doaj   +1 more source

Design of a Flapping Aircraft with Variable Angles of Attack Based on a RC/RRU Parallel Mechanism

Jixie chuandong, 2023
In order to simulate the flapping flight with variable angles of attack in nature, a flapping aircraft with variable angles of attack based on a RC/RRU parallel mechanism is proposed.
Wang Yujin, Hu Rui, Xia Youchang, Xu Luyou, He Miao   +4 more
doaj  

Identification of Missing Knowledge in MBSE System Models Using Graph‐Based Machine Learning

Systems Engineering, Volume 29, Issue 2, Page 133-149, March 2026.
ABSTRACT The design and development of complex aerospace systems pose significant challenges due to their growing complexity. Iterative design processes, guided by formal specifications, strive to refine initially vague characteristics through multiple stages.
Esma Karagoz, Olivia J. Pinon Fischer, Dimitri Mavris   +2 more
wiley   +1 more source

Design and Experimental Study of a Flapping–Twist Coupled Biomimetic Flapping-Wing Mechanism

Drones
Medium and large-sized birds exhibit remarkable agility and maneuverability in flight, with their flapping motion encompassing degrees of freedom in flapping, twist, and swing, which enables them to adapt effectively to harsh ecological environments ...
Rui Meng, Bifeng Song, Jianlin Xuan, Yugang Zhang   +3 more
doaj   +1 more source

Optimal control of flapping wing accounting for nonsteady effects

Aviation, 2010
The optimization of flapping wing trajectory for the minimization energy consumed by the wing and associated with induced power losses is considered in this paper.
Diana Kravchenko
doaj   +1 more source

Segmented Gurney Flaps for Improved Wind Turbine Wake Recovery

Wind Energy, Volume 29, Issue 3, March 2026.
ABSTRACT When wind passes through the rotor of a wind turbine, the velocity is decreased while turbulence is increased. The region of decreased wind speed behind the rotor is known as the wind turbine wake and is bounded by a complex structure of helical vortices. This structure occurs to be more stable in low ambient turbulence and low tip speed ratio
Nirav Dangi, Koen Boorsma, Edwin Bot, Wim Bierbooms, Wei Yu   +4 more
wiley   +1 more source

Curvy Surface Reconstruction

Advanced Science, Volume 13, Issue 7, 3 February 2026.
This review introduces the concept of “general curvy surface reconstruction,” which incorporates both geometric and physical dimensions, representing an upgrade over conventional geometric reconstruction that focuses solely on spatial relationships. Particular emphasis is placed on the emerging opportunities enabled by advanced measurement techniques ...
Chen Shang, Haoyu Qi, Zhigang Wang, Keyu Meng, Zeye Liu, Zeng Meng, Yu Yang, Jianjun Wang, Shan Jiang   +8 more
wiley   +1 more source