Results 41 to 50 of about 74,669 (264)

CFD Simulation of Co-Planar Multi-Rotor Wind Turbine Aerodynamic Performance Based on ALM Method

open access: yesEnergies, 2022
Considering requirements such as enhanced unit capacity, the geometric size of wind turbine blades has been increasing; this, in turn, results in a rapid increase in manufacturing costs.
Yuan Zhang   +4 more
doaj   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

open access: yesAdvanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi   +4 more
wiley   +1 more source

Numerical and Experimental Vibration Analysis of a Steam Turbine Rotor Blade

open access: yesTehnički Glasnik, 2021
Damage to the rotor blade of a steam turbine is a relatively common problem and is one of the leading causes of sudden and unplanned shutdowns of a steam turbine.
Marko Katinić, Marko Ljubičić
doaj  

Mode localization in linear and periodically time‐varying mistuned wind rotor

open access: yesWind Energy, 2021
Rotor blades are the most important and most expensive part of a wind turbine; their dynamic behavior is of great significance for maintenance planning and safe operation.
Xin Guo   +3 more
doaj   +1 more source

Navigating the Ethereal Tightrope: The Nanogenerator Manipulates Neurons for Immune Equilibrium

open access: yesAdvanced Science, EarlyView.
This review explores how nanogenerators modulate neuroimmune responses, offering innovative strategies for treating neurological disorders. By interfacing with neural pathways, they enable precise control of immune activity, especially via vagus nerve stimulation.
Jia Du   +5 more
wiley   +1 more source

Numerical study on the impacts of sand particles on blade erosion in a transonic fan rotor [PDF]

open access: yesAIP Advances
In a real-world environment with high dust and high sand concentrations, continuous ingestion of solid particles results in surface roughness on the fan rotor blade of aero-engines.
Kunbin Jin   +9 more
doaj   +1 more source

Evaluation of Aerodynamic Coefficients of High Temperature Gas Turbine Cascade of Cooled Blade [PDF]

open access: yesEngineering and Technology Journal, 2011
The aerodynamic force coefficients of five linear cascade of existing film cooling turbine blades are evaluated numerically. The blade is geometrically identical to the first rotor blades of the high pressure (HP) turbine of the F-100-PW-220 military ...
Haider L. Aneed, Assim H Yousif
doaj   +1 more source

Effect of rotor stiffness and lift offset on the aeroacoustics of a coaxial rotor in level flight [PDF]

open access: yes, 2009
The acoustic characteristics of a twin contra-rotating coaxial rotor configuration with significant flapwise stiffness are investigated in steady forward flight.
Brown, Richard   +2 more
core  

Feline‐Inspired Robot Enabled by Combustion‐Driven Actuators for Agile Motion and High‐Payload Obstacle Traversal

open access: yesAdvanced Science, EarlyView.
Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma   +4 more
wiley   +1 more source

Aerodynamic and acoustic analysis of helicopter main rotor blade tips in hover [PDF]

open access: yes, 2016
Purpose: The design of main rotor blade tips is of interest to helicopter manufactures since the tip details affect the performance and acoustics of the rotor. The paper aims to discuss this issue.
Barakos, George   +4 more
core   +1 more source

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