Bioinspired Drone Rotors for Reduced Aeroacoustic Noise and Improved Efficiency
Suryansh Prakhar, Jung-Hee Seo, Rajat Mittal

TL;DR
This study proposes bioinspired drone rotor designs with larger planform areas to reduce noise and improve efficiency, based on insect flight mechanics and validated through flow simulations.
Contribution
It introduces a novel bioinspired approach to rotor design that reduces noise and enhances power efficiency using larger planform areas.
Findings
Larger rotor planform areas decrease aeroacoustic noise.
Increased planform area improves power economy.
Bioinspired design offers a promising noise reduction strategy.
Abstract
The application of unmanned aerial vehicles (UAVs) is surging across several industries, paralleled by growing demand for these UAVs. However, the noise emitted by UAVs remains a significant impediment to their widespread use even though in areas such as product delivery, they can be more environmentally friendly than traditional delivery methods. Nature has often been a source of inspiration for devices that are efficient and eco-friendly. In the current study, we leverage the previous work by Seo et al. (Bioinsp. Biomimetics, 16 (4):046019, 2021) on the aeroacoustics of flapping wing flight in mosquitoes and fruit flies to propose and examine a simple strategy for reducing the aeroacoustic noise from drone rotors. In particular, inspired by these insects, we explore how an increase in the planform area of the rotor could be used to reduce the rotation rate and the associated…
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Taxonomy
TopicsBiomimetic flight and propulsion mechanisms
