This study focuses on a high-altitude long-endurance (HALE) joined-wing configuration UAV and completes a preliminary structural design based on aircraft design indices and the fundamental principles of aircraft structure design.Based on the preliminary structural design scheme and aerodynamic shape, a structural finite element model and a vortex l
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Crop growth models and remote sensing are useful tools for predicting crop growth and yield, but each tool has inherent drawbacks when predicting crop growth and yield at a regional scale.To improve the accuracy and precision of regional corn yield predictions, a simple approach for assimilating Moderate Trimmer Resolution Imaging Spectroradiometer
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Aiming at the problem of weakly or negatively damped low-frequency oscillations caused by cross-zone transmission of electricity from large wind farms, this paper proposes a fast terminal sliding-mode additional damping controller based on the Lyapunov stability theory.By investigating Board Game Mattel the flexible power regulation characteristics