Results 71 to 80 of about 294,872 (332)

Wind response characteristics of horizontal axis wind turbines [PDF]

open access: yes, 1981
It was the objective of the work reported here, and in the companion paper 1 . A broader examination of wind turbine dynamic response to turbulence, and attempts to ascertain the features of turbulence that wind turbines are most sensitive to were made.
Holley, W. E.   +2 more
core   +1 more source

Characterisation of a horizontal axis wind turbine’s tip and root vortices [PDF]

open access: yes, 2013
The vortical near wake of a model horizontal axis wind turbine has been investigated experimentally in a water channel. The objective of this work is to study vortex interaction and stability of the helical vortex filaments within a horizontal axis ...
Lo Jacono, David   +2 more
core   +1 more source

High‐Speed, Maneuverable, and Terrain‐Adaptive Micro‐Robot with Tree Frog‐Inspired Bionic Feet

open access: yesAdvanced Science, EarlyView.
A 7.5 mm micro‐robot integrates tree frog‐inspired bionic feet with an electromagnetic linear motor to achieve high‐speed locomotion, slope climbing, and precise turning. It reaches 39 body lengths per second and ascends 30° slopes. The system demonstrates strong potential for inspection tasks in confined and complex environments, such as micro‐aero ...
Weizhi Zhao   +10 more
wiley   +1 more source

Superelastic High‐Entropy Oxide Ceramic Aerogels for Thermal Superinsulation and Sealing at Extreme Conditions

open access: yesAdvanced Science, EarlyView.
A high‐entropy oxide ceramic of (Gd1/2Lu1/2)2(Ti1/3Zr1/3Hf1/3)2O7 is prepared through a molecular synthesis route of pyrolytic solid‐solution reactions. The architectured nanofiber aerogel manifests unprecedented thermomechanical properties, including superelastic compressibility of 98% from −196 to 1500 °C, and thermal superinsulation capacity (24.14 ...
Xiaoke Jiang   +9 more
wiley   +1 more source

A Method for Yaw Error Alignment of Wind Turbine Based on LiDAR

open access: yesIEEE Access, 2020
Yaw control is an important part of the control system of a horizontal shaft wind turbine. After the installation of the wind turbine, the turbulence influence of the wind turbine blades and the azimuth of the wind turbine will cause yaw error which ...
Le Zhang, Qiang Yang
doaj   +1 more source

Piloted Simulation of the Rotorcraft Wind Turbine Wake Interaction during Hover and Transit Flights [PDF]

open access: gold, 2022
Alexander Štrbac   +4 more
openalex   +1 more source

Curvy Surface Reconstruction

open access: yesAdvanced Science, EarlyView.
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   +8 more
wiley   +1 more source

Wind turbine condition monitoring strategy through multiway PCA and multivariate inference [PDF]

open access: yes, 2018
This article states a condition monitoring strategy for wind turbines using a statistical data-driven modeling approach by means of supervisory control and data acquisition (SCADA) data. Initially, a baseline data-based model is obtained from the healthy
Pozo Montero, Francesc   +2 more
core   +3 more sources

In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque

open access: yesAdvanced Science, EarlyView.
In this paper, we present a wheel‐shaped direct‐current piezoelectric generator (DC‐PG) that fundamentally overcomes these constraints by producing phase‐stable DC electricity directly from rolling motion. By embedding this system into suitcase wheels, we demonstrated a fully integrated real‐time location tracking system powered solely by mechanical ...
Hyun Soo Kim   +19 more
wiley   +1 more source

High Specification Offshore Blades: Work Package: 1B: Blades Design [PDF]

open access: yes, 2008
This report outlines the current state of the art in offshore wind turbine blade aerodynamic design, along with the key technical limitations and possible technologies which may improve the aerodynamic design of blades and turbine rotors in the future ...
Brown, Richard   +3 more
core  

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