Results 41 to 50 of about 104,934 (214)
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
Control of rotorcraft retreating blade stall using air-jet vortex generators [PDF]
, 2006 A series of low-speed wind tunnel tests were carried out on an oscillating airfoil fitted with two rows of air-jet vortex generators (AJVGs). The airfoil used had an RAE 9645 section and the two spanwise arrays of AJVGs were located at x/c=0.12 and 0.62.
Akanni S. D. +22 more
core +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
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
Dynamic Stall Mechanisms of Pitching Airfoil: IDDES Study Across Different Mach Numbers
Applied SciencesThis study investigates dynamic stall mechanisms of a pitching NACA 0012 airfoil through high-fidelity computational fluid dynamics (CFD) simulations.
Simeng Jing +4 more
doaj +1 more source
Dynamic Stall Characteristics of the Bionic Airfoil with Different Waviness Ratios
Applied Sciences, 2021 A dynamic stall will cause dramatic changes in the aerodynamic performance of the blade, resulting in a sharp increase in the blade vibration load. The bionic leading-edge airfoil with different waviness ratios, inspired by the humpback whales flipper ...
Liming Wu, Xiaomin Liu
doaj +1 more source
Complex Structure of Dynamic Stall on Wind Turbine Airfoils [PDF]
, 2013 Fluid dynamics video demonstrating the evolution of dynamic stall on a wind turbine blade.Comment: 2 pages with 2 attached ...
Babbitt, Ashli +6 more
core
Study on the Active Control of the Dynamic Stall of Rotor Airfoils Based on Plasma Excitation
AerospaceThis paper studies a rotor dynamic stall control method using an alternating current dielectric barrier discharge (AC DBD) plasma actuator through numerical simulation methods.
Weihong Kong, Keyi Guo, You Li
doaj +1 more source
Dynamic Stall Control by Passive Disturbance Generators [PDF]
AIAA Journal, 2011 Passive cylindrical disturbance generators mounted near the leading edge of an airfoil significantly improved its performance under dynamic stall conditions. Time-resolved particle image velocimetry and simultaneous pressure measurements were conducted at the midchord of a pitching airfoil equipped with passive disturbance generators.
Heine, Benjamin +3 more
openaire +3 more sources