Results 31 to 40 of about 97,324 (334)

Experimental and Numerical Investigations on the Dynamic Response of Blades with Dual Friction Dampers

open access: yesAerospace, 2023
Friction dampers are widely employed to reduce blade resonance vibration amplitude in turbomachinery. In this paper, a study was performed on the forced response of two blades with dual friction dampers. Numerical simulation and experimental testing were
Jixin Man   +5 more
doaj   +1 more source

Vibrational Stresses of Damaged Steam Turbine Blades After Renovation Repair [PDF]

open access: yesJournal of Mechanical Engineering, 2021
The last-stage blades of K-1000-60/3000 steam turbines operate in a humid steam environment, which causes erosion damage in the blades and reduction in their residual life.
Mykola H. Shulzhenko   +1 more
doaj   +1 more source

A comparison of coaxial and conventional rotor performance [PDF]

open access: yes, 2009
The performance of a coaxial rotor in hover, in steady forward flight, and in level, coordinated turns is contrasted with that of an equivalent, conventional rotor with the same overall solidity, number of blades, and blade aerodynamic properties.
Brown, Brown, Kim, Landgrebe, Newman
core   +1 more source

A review of in-situ loading conditions for mathematical modelling of asymmetric wind turbine blades [PDF]

open access: yes, 2015
This paper reviews generalized solutions to the classical beam moment equation for solving the deflexion and strain fields of composite wind turbine blades.
Bardsley, Andrew   +3 more
core   +1 more source

Microtab dynamic modelling for wind turbine blade load rejection [PDF]

open access: yes, 2013
A dynamic model characterising the effect of microtab deployment on the aerodynamics of its base aerofoil is presented. The developed model predicts the transient aerodynamic coefficients consistent with the experimental and computational data reported ...
Alireza Maheri   +25 more
core   +2 more sources

Two LQRI based Blade Pitch Controls for Wind Turbines

open access: yesEnergies, 2012
As the wind turbine size has been increasing and their mechanical components are built lighter, the reduction of the structural loads becomes a very important task of wind turbine control in addition to maximum wind power capture.
Yoonsu Nam, Sungsu Park
doaj   +3 more sources

Implementation and Validation of an Advanced Wind Energy Controller in Aero-Servo-Elastic Simulations Using the Lifting Line Free Vortex Wake Model

open access: yesEnergies, 2021
Accurate and reproducible aeroelastic load calculations are indispensable for designing modern multi-MW wind turbines. They are also essential for assessing the load reduction capabilities of advanced wind turbine control strategies.
Sebastian Perez-Becker   +3 more
doaj   +1 more source

Individual Blade Pitch Control for Load Reduction

open access: yesWind Energy, 2002
AbstractIf a pitch‐regulated wind turbine has individual pitch actuators for each blade, the possibility arises to send different pitch angle demands to each blade. The possibility of using this as a way of reducing loads has been suggested many times over the years, but the idea has yet to gain full commercial acceptance. There are a number of reasons
openaire   +1 more source

Design procedure for a wind-wheel with self-adjusting blade mechanism

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2014
Developed is a wind-wheel design equipped with the self-adjusting blade. The blade is positioned eccentrically to the balance wheel and can freely rotate around its axis. Elaborated is the method of calculating the energy characteristics for a wind-wheel
Gennady A. Oborsky   +2 more
doaj   +1 more source

Design of a 3.4‐MW wind turbine with integrated plasma actuator‐based load control

open access: yesWind Energy, 2022
Historically, cost reduction in wind energy has been accomplished by increasing hub heights and rotor diameters to capture more energy per turbine. The growth in rotor and turbine costs with increasing turbine sizes is also driven by the additional ...
Mayank Chetan   +4 more
doaj   +1 more source

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