Results 151 to 160 of about 25,595 (255)

Electrothermal Twisted and Coiled Polymer Artificial Muscles and Their Applications in Soft Robotics

Small Structures, Volume 7, Issue 5, May 2026.
Researchers develop a PE@SPN electrothermal polymer artificial muscle with a parallel‐stranded spiral structure. A temperature self‐sensing‐driven hierarchical closed‐loop fractional order PID (FOPID) control scheme is adopted. A rehabilitation manipulator was designed, and subsequently, a series of experiments are conducted to test the performance of ...
Yali Han, Xiaopeng Zheng, Yang Li, Junjie Wang, Yu Zhao, Xiang Zhou, Zunfeng Liu   +6 more
wiley   +1 more source

A Review of Bio-Inspired Perching Mechanisms for Flapping-Wing Robots. [PDF]

Biomimetics (Basel)
Speciale C, Milana S, Carcaterra A, Concilio A.   +3 more
europepmc   +1 more source

Modeling and Analysis of a Simple Flexible Wing-Thorax System in Flapping-Wing Insects. [PDF]

Biomimetics (Basel), 2022
Cote B, Weston S, Jankauski M.
europepmc   +1 more source

Aerodynamic Characteristics of Airfoils Equipped With Gurney Flaps and Vortex Generators for the Entire Range of Pitch Angles

Wind Energy, Volume 29, Issue 5, May 2026.
ABSTRACT An experimental study of NACA0021 airfoil equipped with vortex generators (VGs) and Gurney flaps (GFs) was conducted to assess the effects of these devices on the aerodynamic airfoil performance, the information that is necessary for studying the self‐starting characteristics of vertical axis wind turbines (VAWTs).
Marin Ivanković, Marvin Jentzsch, Marinos Manolesos, Christian Navid Nayeri, Hrvoje Kozmar   +4 more
wiley   +1 more source

PPO-Based Reinforcement Learning Control of a Flapping-Wing Robot with a Bio-Inspired Sensing and Actuation Feather Unit. [PDF]

Sensors (Basel)
Hussain S, Messaoudi M, Imran M, Tang D.
europepmc   +1 more source

Short‐term effects of wildlife rehabilitation disappear over time in the wild: A case study on Spanish imperial eagles

Conservation Science and Practice, Volume 8, Issue 5, May 2026.
We assessed the effectiveness of Wildlife Recovery Centers by comparing dispersal behavior of rehabilitated and wild Spanish imperial eagles using GPS tracking. Rehabilitated individuals initially moved shorter distances, rested more, and hunted less than wild controls, but these differences declined over time and ultimately disappeared.
Unai Ormazabal‐Santa Cruz, José M. Abad‐Gómez, Manuel Parejo, José M. Guzmán‐Bolaños, María Arredondo, María Jesús Palacios, Ángel Sánchez, Álvaro Guerrero, Cosme López‐Calderón   +8 more
wiley   +1 more source

Insect-scale flapping-wing MAVs with variable transmission ratio and wingspan: achieving payload adaptability, and self-stabilizing hovering. [PDF]

Microsyst Nanoeng
Lu X, Wu Y, Chen J, Chen Y, Wu X, Xiao D.   +5 more
europepmc   +1 more source

Embodied airflow sensing for improved in-gust flight of flapping wing MAVs. [PDF]

Front Robot AI, 2022
Wang C, Wang S, De Croon G, Hamaza S.
europepmc   +1 more source

The caliph and the falcons: a ninth‐century history from Iceland to Iraq

Early Medieval Europe, Volume 34, Issue 2, Page 299-322, May 2026.
In the late ninth and early tenth centuries, an extraordinary number of falcons were given to the ʿAbbāsid caliphs in Baghdad, many of which were white. Gifts from competing dynasties in the northern provinces of the Caliphate, at least some of these birds were almost certainly gyrfalcons from near the Arctic Circle.
Caitlin Ellis, Sam Ottewill‐Soulsby
wiley   +1 more source

Flapping-wing robot achieves bird-style self-takeoff by adopting reconfigurable mechanisms. [PDF]

Sci Adv
Chen A, Song B, Liu K, Wang Z, Xue D, Qi H.   +5 more
europepmc   +1 more source