Results 21 to 30 of about 27,212 (306)
An experimental study of airfoil instability tonal noise with trailing edge serrations [PDF]
, 2013 This paper presents an experimental study of the effect of trailing edge serrations on airfoil instability noise. Detailed aeroacoustic measurements are presented of the noise radiated by an NACA-0012 airfoil with trailing edge serrations in a low to ...
Joseph, PF, Chong, TP
core +1 more source
Applied Sciences, 2020 Wind turbines are under continuous development for large-scale deployment and oceanization, leading to the requirement of longer blades. The economic losses caused by blade replacement and shutdown have increased. The downtime caused by blade issues in a
Cheng Chen +3 more
doaj +1 more source
The Trail to the Leading Edge [PDF]
Mechanical Engineering, 2004 This article focuses on SwRI that had conducted impact experiments, experiments of the sort that would be needed now, on the orbiter's thermal protection system. Studies had included the effects of foam insulation, ablator, and ice striking both carbon-carbon materials similar to those that line the shuttle's leading edges and the silica thermal ...
James D. Walker, Donald J. Grosch
openaire +1 more source
Structure design of variable camber wing trailing edge based on multi-block rotating mechanism
Xibei Gongye Daxue Xuebao, 2023 The variable camber trailing edge enables the aircraft to maintain the best aerodynamic performance throughout the flight envelope, so as to achieve the ultimate goal of reducing aircraft fuel consumption and air pollutant emissions.
SHI Xintong +4 more
doaj +1 more source
Shock and Vibration, 2011 An active control method utilizing the multiple trailing edge flap configuration for rotorcraft vibration suppression and blade loads control is presented.
Uğbreve;ur Dalli +1 more
doaj +1 more source
Acoustic Improvement of Stator–Rotor Interaction with Nonuniform Trailing Edge Blowing
Applied Sciences, 2018 The results of unsteady-flow simulations and experiments are discussed to investigate active noise-reduction effects on the stator–rotor interaction in a single-stage low-speed compressor with nonuniform trailing edge blowing.
Wenjie Wang, Peter J. Thomas
doaj +1 more source
Effect of Wavy Leading Edges on Airfoil Trailing-Edge Bluntness Noise
Aerospace, 2023 Among the several noise-generation mechanisms of airfoil self-noise, trailing-edge bluntness noise is an important noise source, which is caused by the vortex shedding at blunt trailing edges.
Yudi Xing +4 more
doaj +1 more source
Adjoint-based optimization of flapping plates hinged with a trailing-edge flap
Theoretical and Applied Mechanics Letters, 2015 It is important to understand the impact of wing-morphing on aerodynamic performance in the study of flapping-wing flight of birds and insects. We use a flapping plate hinged with a trailing-edge flap as a simplified model for flexible/morphing wings in ...
Min Xu +3 more
doaj +1 more source
Paths and Trails in Edge-Colored Graphs
Theoretical Computer Science, 2008 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Abdelfattah Abouelaoualim +5 more
openaire +1 more source
Effects of non-uniform permeability on vortex shedding and noise control of blunt trailing edge
AIP Advances, 2019 In this paper, the characteristics of the vortex shedding and noise of the blunt trailing edge with different porous permeable segment are studied by numerical simulation.
Hanru Liu, Nanshu Chen, Zhijie Hu
doaj +1 more source