Engineering low-noise multi-rotor propulsion systems that blend seamlessly into urban ambient noise profiles.
Consumer surveys show that community opposition to drone delivery is driven primarily by annoying, high-pitched rotor buzz. Scaling to thousands of daily flights requires stealthy acoustic signatures.
Traditional decibel (dBA) measurements fail to capture the high-frequency tonality that human ears find irritating. AAVDelivery optimizes blade passage frequencies (BPF) and modulates rotor RPM to shift noise into less perceptible acoustic frequency bands.
Deploying closed-loop toroidal propellers and unevenly spaced multi-blade configurations disperses acoustic energy across broader spectrums, eliminating sharp tonal whine and ensuring neighborhood acceptance.