Bio-Inspired Rotor Designs: Enhancing Thrust, Energy Efficiency, and Noise Reduction

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Adjustments to serration parameters achieve noise reductions of up to 5 decibels.
Numerical analyses reveal only marginal impacts on thrust and drag, with stability in aerodynamic efficiency.
Large Eddy Simulations combined with acoustic models predict the passive stabilization of turbulence.
Experimental tests confirm the numerical data across different rotational speeds, expanding the analysis scope.

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This study explores noise reduction through trailing-edge serrations, improving energy efficiency in fan blades.

Rapisarda et al. (2025) studied this question.

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