Results 11 to 20 of about 157,710 (277)

ANALYSIS OF MICRO-ELECTROMECHANICAL INERTIAL MEASUREMENT UNITS FOR UNMANNED AERIAL VEHICLE APPLICATIONS [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2022
Typically, an inertial navigation system (INS) is used to determine the position, speed, and orientation of an object moving relative to the earth's surface. The navigation information (position, speed and orientation) of an unmanned aerial vehicle (UAV)
Aftandil MAMMADOV
doaj   +1 more source

Yaws [PDF]

open access: yesBritish Medical Bulletin, 2014
Yaws, caused by Treponema pallidum ssp. pertenue, is endemic in parts of West Africa, Southeast Asia and the Pacific. The WHO has launched a campaign based on mass treatment with azithromycin, to eradicate yaws by 2020.We reviewed published data, surveillance data and data presented at yaws eradication meetings.Azithromycin is now the preferred agent ...
Marks, Michael   +4 more
openaire   +7 more sources

A Targetless Method for Simultaneously Measuring Three-Degree-of-Freedom Angular Motion Errors with Digital Speckle Pattern Interferometry

open access: yesSensors, 2023
As a guide rail is the basic motion unit of precision equipment, the measurement of and compensation for its motion errors are important preconditions for precision machining and manufacturing.
Lili Shi, Sijin Wu, Miao Yan, Haisha Niu
doaj   +1 more source

Performance Comparison of the Single Axis and Two-Axis Solar System using Adaptive Neuro-Fuzzy Inference System Controls [PDF]

open access: yesE3S Web of Conferences, 2020
Solar energy is one of the renewable energy that gets more attention from many countries. Solar photo voltaic (PV) takes the right position to get the maximum energy yield. The study was conducted by comparison of performance with two methods of tracking
Imron Chairul   +5 more
doaj   +1 more source

Large Eddy Simulation of the Flow around a Generic Submarine under Straight-Ahead and 10° Yaw Conditions

open access: yesJournal of Marine Science and Engineering, 2023
Aiming towards a better understanding of the flow field around a fully appended Joubert BB2 submarine model, and in order to complement the experimental investigations of the wake of the hydroplanes and sail, large eddy simulation (LES) with the dynamic ...
Mo Chen   +3 more
doaj   +1 more source

Experimental study on the characteristics of wind turbine wake field considering yaw conditions

open access: yesEnergy Science & Engineering, 2021
This paper explores the wake of a wind turbine yaw and its influence on the output power of the downstream wind turbine. A wind turbine model (hub height and diameter of 1.2 m and 1.0 m, respectively) was used in the experiments, and the yaw angle of the
Xiuyong Zhao   +7 more
doaj   +1 more source

Research on Unsteady Wake Characteristics of the NREL 5MW Wind Turbine Under Yaw Conditions Based on a LBM-LES Method

open access: yesFrontiers in Energy Research, 2022
The yaw of a large-scale wind turbine will change the aerodynamic performance of its substructures. In view of this, this article applied a LBM-LES method to numerically simulate the yawed MEXICO wind turbine and compared the numerical results with the ...
Feifei Xue   +6 more
doaj   +1 more source

The Effect of Cornering on the Aerodynamics of a Multi-Element Wing in Ground Effect

open access: yesFluids, 2020
This research investigates the effects of cornering on a multi-element wing in ground effect with the aim to improve the understanding of such in the effort to improve the performance of open-wheel race cars. A numerical validation study was performed to
Dipesh Patel   +2 more
doaj   +1 more source

A time‐varying formulation of the curled wake model within the FAST.Farm framework

open access: yesWind Energy, 2023
In this article, we present a time‐varying formulation of the curled wake model that we implemented in FAST.Farm. The curled wake model, originally developed for steady‐state conditions, is used to produce realistic wake profiles behind a wind turbine in
Emmanuel Branlard   +2 more
doaj   +1 more source

Applicability of Dynamic Inflow Models of HAWT in Yawed Flow Conditions

open access: yesEnergies, 2022
Horizontal axis wind turbines (HAWTs) experience yaw misalignments due to the physical limitations of yaw controllers and various novel active yaw controls. Moreover, the motion of floating offshore wind turbines (FOWTs) accelerates yaw misalignment. The
Chihoon Hur   +2 more
doaj   +1 more source

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