Porous ground treatments for propeller noise reduction in ground effect.

ABSTRACT: This study investigates the aerodynamic and aeroacoustic behavior of propellers operating in ground-effect conditions, with an emphasis on the impact of porous ground surface treatments. The investigation explores the potential of porous materials to reduce propeller noise near the ground, a major barrier to the acceptance and integration of Urban Air Mobility (UAM) systems. Experiments were conducted in an anechoic chamber using an APC [Formula: see text] inch propeller in a pusher configuration. The setup used a rigid flat plate to act as the ground plane at various distances from the propeller. The ground plane was treated with three types of porous foams, each with different pore densities and thicknesses. Noise measurements were taken using a polar array of microphones positioned in b

SUBMITTER: Kamliya Jawahar H 

PROVIDER: S-EPMC11754600 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature