Abstract
ABSTRACT This study conducts a series of numerical simulations of the twin-hydro-skis proposed by the NACA Laboratory. Using RANS equations and the SST k - ω turbulence model with FVM, along with VOF for free surface tracking and overset mesh for water landing dynamics, the study examines how the beam-loading coefficient, aspect ratio, deadrise angle, and installation position influence the performance of the twin-hydro-skis. The findings reveal that the hydro-skis reduce the load by converting a single water touch into two touches. The optimal beam-loading coefficient is found to range from 20 to 60, the aspect ratio should ideally be between 1 and 3, and the deadrise angle of the twin-hydro-skis should be kept within the range of 0° to 4.5°. It is recommended to install the hydro-skis within the range of 0–0.03 times the length of the aircraft around the center of gravity.
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