Results 81 to 90 of about 5,063 (265)
PLoS Computational Biology, 2019 The origin of avian flight is one of the most controversial debates in Paleontology. This paper investigates the wing performance of Caudipteryx, the most basal non-volant dinosaur with pennaceous feathered forelimbs by using modal effective mass theory.
Yaser Saffar Talori +5 more
doaj +1 more source
Journal of Robotics, 2020 The current flapping wing adopts T-shaped or cross-shaped tail fin to adjust its flight posture. However, how the tail fin will affect the hover control is not very clear.
Pingxia Zhang, Junru Zhu, Yongqiang Zhu
doaj +1 more source
Polymer Composites, EarlyView.Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci +2 more
wiley +1 more source
Fatigue Analysis and Testing of Wind Turbine Blades [PDF]
, 2013 This thesis focuses on fatigue analysis and testing of large, multi MW wind turbine blades. The blades are one of the most expensive components of a wind turbine, and their mass has cost implications for the hub, nacelle, tower and foundations of the ...
GREAVES, PETER,ROBERT
core
Wake Signature of Finite-Span Flapping Rigid Wings
, 2011 A numerical study is conducted in order to investigate the wake signature and aerodynamics forces of finite-span flapping wings. The unsteady laminar incompressible Navier-Stokes equations are solved on moving overlapping structured grids using a second ...
Joel E. Guerrero, Guerrero, Joel E.
core +1 more source
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
Good vibrations for flapping-wing flyers
Science Robotics, 2020 Studies of insect flight reveal how flapping-induced vibrations augment flight stability of tailless flapping-wing flyers.
openaire +4 more sources
Actuation Strategies for Underwater Jet‐Propelled Soft Robots
Journal of Field Robotics, EarlyView.ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone +3 more
wiley +1 more source
Simulation of flapping wings subjected to gusty inflow
, 2019 Ornithopters and entomopters should be insensitive to the gusty environment during outdoor operations. Hence, it becomes imperative to understand their behaviour under the influence of gust for ensuring stable flight.
Vengadesan, S, Mathur, JS, De, MM
core
Exploring the Use and Impact of Composite Materials in Robotics: A Systematic Review
Journal of Field Robotics, EarlyView.ABSTRACT Lightweight and high‐strength materials are important in robotics, as structural design impacts efficiency, payload capacity, and energy consumption. Composite materials, with their superior stiffness‐to‐weight ratios and multifunctional properties, offer clear advantages over conventional metals and polymers.
Doglas Negri +4 more
wiley +1 more source