The aerodynamics and acoustics of a small-scale lightly loaded hovering rotor operating at
low Reynolds number is investigated using high-fidelity numerical simulation. A canonical …

The rapid growth of drone use in urban areas has prompted authorities to review airspace
regulations, forcing drone manufacturers to anticipate and reduce the noise emissions …

In small-size UAVs configurations, rotor-beam interaction noise is an important contributor to
the tonal noise. With the beam located in the close wake of the rotor, distinct and coupled …

An artificial neural network-based surrogate model and Gaussian process model were
developed to predict the acoustic interaction for a fixed-pitch rotor in proximity to a …

This work investigates the acoustic radiation of a rotor in interaction with a beam at low
Reynolds and Mach numbers. Specifically, non-compressible Implicit Large Eddy …

Current research on tiltrotor noise predominantly concentrates on configurations with high
disk loading and Reynolds numbers, leaving smaller aircraft setups underexplored. This …

This paper addresses various aspects of the aerodynamic noise radiated by small-size
drone rotors, emphasizing on a simplified generic configuration, including a rotor and a …

Propeller operation in close proximity to a strut involves interactions from multiple sources,
significantly contributing to noise generation. This study aims to reduce this interaction noise …

The radiation of a small-scale low Reynolds number two-bladed rotor of 0, 2 diameter
with NACA0012 blade profile in interaction with cylindrical beams at different locations is …

This study explores the use of airframe permeability as a method to reduce rotor-airframe
interaction noise, which often exists in multi-rotor unmanned aerial vehicles. High-fidelity …