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Simulation degradation datasets for health prognosis of a control moment gyroscope’s flywheel systemMendeley Data [PDF]
Data in BriefA Control moment gyroscope (CMG) is an attitude control actuator widely used in spacecraft. As a consequence of the continuous high-speed rotation to output stable angular momentum, CMGs are at a higher risk of degradation failure, which could lead to a ...
Diyin Tang +4 more
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Movement Models to Predict Low‐Altitude Flight of Soaring Birds Using Look‐Ahead Environmental Factors [PDF]
Ecology and EvolutionAdvances in fine‐scale movement modeling of soaring birds can aid efforts to understand and resolve the impacts of anthropogenic activities on such birds. Soaring birds often rely on underlying terrain and low‐altitude updrafts to govern their flights at
Rimple Sandhu +9 more
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Sensors, 2023 Brushless synchronous machines (BSMs) are replacing conventional synchronous machines with static excitation in generation facilities due to the absence of sparking and lower maintenance.
Miguel A. Pardo-Vicente +3 more
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Influencing Factors on the Fluting in an Axial Ball Bearing at DC Bearing Currents
Lubricants, 2023 The effect of variable DC bearing current amplitude, bearing current polarity, mechanical force, rotation speed, bearing temperature, and number of the balls on the fluting in an axial ball bearing type 51208 is investigated under DC currents.
Omid Safdarzadeh +4 more
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Alexandria Engineering Journal, 2023 Small-scale horizontal axis wind turbines (SSHAWT) have recently gained more interest due to fuel shortages and environmental issues. Generally, they are installed close to the ground in the wind boundary layer, where the velocity is relatively small ...
Mahmoud E. Hasan +3 more
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The computational fluid dynamic modeling of downwash flow field for a six-rotor UAV [PDF]
Frontiers of Agricultural Science and Engineering, 2018 The downwash flow field of the multi-rotor unmanned aerial vehicle (UAV), formed by propellers during operation, has a significant influence on the deposition, drift and distribution of droplets as well as the spray width of the UAV for plant protection.
Yongjun ZHENG, Shenghui YANG, Xingxing LIU, Jie WANG, Tomas NORTON, Jian CHEN, Yu TAN
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IEEE Access, 2022 We live in an electrified atmosphere where a potential difference of about 250 kV is established between the ground and the ionosphere. The resulting potential gradient induces electric charges on the objects immersed in the atmosphere, which are more ...
Pol Fontanes +5 more
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Rotor Design And Performance Study Of An Airborne Wind Energy System With Flight Dynamics Simulator [PDF]
مهندسی مکانیک شریف, 2023 Airborne wind energy system (AWES) is a novel approach in wind energy harvesting. It has several advantages against conventional horizontal axis wind turbine (HAWT), like using less material and thus lower manufacturing cost, higher efficiency, stable ...
M. Ahmadi, S. Karimian Aliabadi
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Analytic solution to swing equations in power grids with ZIP load models.
PLoS ONE, 2023 ObjectiveThis research pioneers a novel approach to obtain a closed-form analytic solution to the nonlinear second order differential swing equation that models power system dynamics.
HyungSeon Oh
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Image acquisition effects on Unmanned Air Vehicle snow depth retrievals [PDF]
Proceedings of the International Association of Hydrological Sciences, 2018 Advancements in technology have facilitated new opportunities in aerial photogrammetry; one of these is the use of unmanned aerial vehicles (UAVs) to estimate snow depth (SD).
A. E. Tekeli, S. Dönmez
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