Results 41 to 50 of about 105,358 (290)
Advanced Functional Materials, EarlyView.MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler +3 more
wiley +1 more source
Dynamic Stall Characteristics of Thick Wind Turbine Airfoils
Wind EnergyThis paper studies the dynamic stall characteristics of thick flatback and nonflatback wind turbine airfoils. Two airfoils with a maximum thickness of 35% were studied, with trailing edge thicknesses of 2% and 10%, respectively.
Mehdi Doosttalab +4 more
doaj +1 more source
Numerical Investigations of Dynamic Stall Control [PDF]
INCAS Bulletin, 2014 In this paper we investigated numerically the dynamic stall phenomenon and the possibilities to control it, with application to vertical axis wind turbines (for urban users).
Florin FRUNZULICA +2 more
doaj +1 more source
Development of a second-order dynamic stall model [PDF]
Wind Energy Science, 2020 Dynamic stall phenomena carry the risk of negative damping and instability in wind turbine blades. It is crucial to model these phenomena accurately to reduce inaccuracies in predicting design driving (fatigue and extreme) loads. Some of the inaccuracies
N. Adema, M. Kloosterman, G. Schepers
doaj +1 more source
Dynamic stall measurements on airfoils [PDF]
PAMM, 2007 AbstractWe present a new method for measuring the lift forces acting on an airfoil segment under dynamic stall conditions. Thereby the pressure distribution over the wind tunnel walls is detected by an adequate number of pressure sensors. The airfoil is rotated by a stepping motor with angular velocities up to 300°/s.
Gerrit Wolken‐Möhlmann +2 more
openaire +1 more source
Multifunctional Fluidic Units for Emergent, Responsive Robotic Behaviors
Advanced Materials, EarlyView.A multifunctional reconfigurable fluidic unit can be used as sensor, valve and actuator is presented. A unique configuration combines the features of the three components as a Responsive self‐oscillating actuator. The remarkable versatility of the fluidic unit is demonstrated by building different robots with the same fluidic units only by varying ...
Mostafa Mousa +3 more
wiley +1 more source
Materials and System Design for Self‐Decision Bioelectronic Systems
Advanced Materials, EarlyView.This review highlights how self‐decision bioelectronic systems integrate sensing, computation, and therapy into autonomous, closed‐loop platforms that continuously monitor and treat diseases, marking a major step toward intelligent, self‐regulating healthcare technologies.
Qiankun Zeng +9 more
wiley +1 more source
Research on Simulation Method of Propeller Power in the Model Free-flight Test
Hangkong gongcheng jinzhan, 2020 It is necessary to simulate effects of propeller power accurately, when the stall performance of propeller aircraft is simulated by scaled free-flight test.
ZHANG Jiaqi, XI Liangliang, WEN Qing
doaj +1 more source
Axioms, 2023 The objective of this article is to characterize an aeroelastic system in terms of its dynamical behavior, which could be either chaotic or periodic before, during, and after achieving the flutter velocity.
Michelle F. Westin +4 more
doaj +1 more source
Direct Ink Writing 3D Printing of Recyclable and Thermally Stable Vitrimers
Advanced Materials Technologies, EarlyView.Vitrimers hold great promise in additive manufacturing as defect‐insensitive, repairable, and recyclable feedstocks. A thin‐film additively manufactured process is developed for a high‐performance vitrimer that is difficult to process traditionally.
Louis O. Vaught +2 more
wiley +1 more source