Results 41 to 50 of about 97,324 (334)
Reducing Helicopter Vibration Loads by Individual Blade Control with Genetic Algorithm
Machines, 2022 A rotor that can realize individual blade pitch control was designed. This paper focuses on finding the trend of helicopter vibration loads after applying multiple high-order harmonic control.
Renguo Yang +3 more
doaj +1 more source
Active load reduction using individual pitch, based on local blade flow measurements
Wind Energy, 2004 AbstractA new load‐reducing control strategy for individual blade control of large pitch‐controlled wind turbines is presented. This control concept is based on local blade inflow measurements and offers the possibility of larger load reductions, without loss of power production, than seen in other state‐of‐the‐art load‐reducing concepts. Since the new
Torben Juul Larsen +2 more
openaire +1 more source
Applied MechanicsLarge-diameter butterfly valves are essential control components in high-flow hydraulic systems, where blade geometry directly impacts operational reliability, energy efficiency, and lifecycle cost.
Xolani Prince Hadebe +3 more
doaj +1 more source
Wind Energy, 2022 Summary This paper presents the results of an advanced control strategy that employs active trailing edge flaps to reduce the fatigue loads of an experimental wind turbine.
Sirko Bartholomay +9 more
doaj +1 more source
Effect of Turbine Blades Transformation on Savonius Turbine Performance
Mekanika, 2022 The purpose of this study was to determine the effect of the transformation of savonius turbine blades using the Cp-TSR curve. The transformation referred to here is the change in the angular of the blade so that the area of the cross section of the ...
Muhammad Iyas Abdul Alim +2 more
doaj +1 more source
Molecular Oncology, EarlyView.Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang +12 more
wiley +1 more source
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source
The Impact of Blade Surface Roughness on Wind Turbine Efficiency: A Monte Carlo Method Approach
Energy Science & EngineeringThis paper investigates the impact of blade surface roughness on the performance and efficiency of wind turbines. Environmental factors such as icing, insects, dust, and pollution contribute to blade roughness, increasing aerodynamic drag and reducing ...
Dariush Biazar, Amard Afzalian
doaj +1 more source
Advanced Engineering Materials, EarlyView.Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek +5 more
wiley +1 more source
Numerical study on the internal flow field of a reversible turbine during continuous guide vane closing [PDF]
, 2017 The unsteady flow field in a reversible pump-turbine is investigated during the continuous load rejection using a 3D computational fluid dynamic analysis.
Benini, Ernesto +3 more
core +1 more source