Results 161 to 170 of about 94,319 (292)

Wind Tunnel Assessment of Dynamic Induction Control Under Varying Inflow Wind Directions

open access: yesWind Energy, Volume 29, Issue 6, June 2026.
ABSTRACT Dynamic induction control (DIC), also known as pulse control, is a wake‐mixing strategy intended to improve wind farm efficiency by mitigating wake‐induced power losses. It typically employs harmonic collective blade pitching to excite wake instabilities, forming coherent pulsing structures that enhance turbulent mixing and accelerate wake ...
Manuel Alejandro Zúñiga Inestroza   +3 more
wiley   +1 more source

Reduction of blade-vortex interaction noise using higher harmonic pitch control [PDF]

open access: yes
An acoustics test using an aeroelastically scaled rotor was conducted to examine the effectiveness of higher harmonic blade pitch control for the reduction of impulsive blade-vortex interaction (BVI) noise. A four-bladed, 110 in.
Booth, Earl R., Jr.   +4 more
core   +1 more source

Initial Atmospheric Waves Experiment (AWE) Imaging Analyses: Gravity Wave Sources, Temperatures, Pseudomomentum Fluxes, and Horizontal Wavenumber Spectra at the OH Layer

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract The NASA Atmospheric Waves Experiment (AWE) employs an OH imager that began measurements aboard the International Space Station (ISS) on 22 November 2023. The motivation for AWE was to quantify gravity wave (GW) responses to diverse sources and their influences extending into the mesosphere and higher altitudes.
David C. Fritts   +7 more
wiley   +1 more source

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

open access: yesAdvanced Functional Materials, Volume 36, Issue 38, 11 May 2026.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz   +9 more
wiley   +1 more source

A holographic interferometry technique for measuring transonic flow near a rotor blade [PDF]

open access: yes
A technique that uses holographic interferometry to record the first interferograms of the flow near a hovering transonic rotor blade is presented.
Kittleson, J. K.
core   +1 more source

The Terminal Domains of Collagen‐Like Silk Direct Molecular Interactions and Liquid–Liquid Phase Separation‐Mediated Material Assembly

open access: yesAdvanced Functional Materials, Volume 36, Issue 39, 14 May 2026.
Terminal domains of recombinant collagen‐like silk regulate hierarchical self‐assembly across molecular and material scales. We show that terminal domains of collagen‐like silk enhance triple‐helix stability and drive liquid–liquid phase separation, enabling reversible formation of fibers and self‐healing films.
Mengjie Shen   +5 more
wiley   +1 more source

Forward acoustic performance of a model turbofan designed for a high specific flow (QF-14) [PDF]

open access: yes
Forward noise and overall aerodynamic performance are presented for a high-tip-speed fan having an exceptionally high average axial Mach number at the rotor inlet.
Lucas, J. G.   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy