The silent flight achieved by owls is attributed to their unique wing morphologies,
characterized by leading-edge (LE) serrations, trailing-edge (TE) fringes, and a velvet-like …

Abstract The Leading-Edge (LE) serrations on owls' wings are known to be responsible for
silent flight. However, this design has rarely been applied to reduce the noise of rotational …

Drones, which have become increasingly popular in recent years, produce a lot of noise due
to the movement of their propellers. When flying near humans, especially as in urban …

Leading-edge (LE) noise is a common source of broadband noise for fans that can be
suppressed using appended LE serrations. We conduct an integrated study of the …

Unlike rigid rotors of drones, bird wings are composed of flexible feathers that can passively
deform while achieving remarkable aerodynamic robustness in response to wind gusts. In …

As a sophisticated micro device for noise reduction, the owl-inspired leading-edge (LE)
serrations have been confirmed capable of achieving passive control of laminar-turbulent …

There is an increasing need in industry for noise reduction in fans. Inspired by owls' silent
flight, we propose four owl-inspired blade designs for a mixed-flow fan to examine whether …

Leading-edge (LE) serrations on owls' outermost remiges play a crucial role in the silent
flight of owls. While the aeroacoustic characteristics of LE serrations have been widely …

As one of the unique owl-wing morphologies, trailing-edge (TE) fringes are believed to play
a critical role in the silent flight of owls and have been widely investigated using idealized …

This work describes a novel mechanism of laminar flow control of straight and backward
swept wings with a comb-like leading edge (LE) device. It is inspired by the LE comb on owl …