Techsburg - News Archives - January, 2023
Techsburg presents paper at AIAA SCITECH Forum 2023 entitled “Experimental and Numerical Investigation of Installed Ducted Propulsor Aeroacoustics”
Abstract:
NASA’s Advanced Air Transport Technology project has spurred development of novel transport aircraft configurations with the goal of reducing noise and greenhouse gas emissions. To this end, a subscale model of a low-solidity electric ducted fan propulsor originally designed for the Ampaire TailwindTM aircraft concept was tested in the Virginia Tech Anechoic Wind Tunnel in three installation configurations: isolated, close-coupled to an upstream airfoil, and planar boundary layer-ingesting. Three aeroacoustic CFD simulations matching the test conditions for a select run of each configuration were conducted using the PowerFLOW lattice-Boltzmann method solver. Acoustic levels from these simulations were compared against microphone measurements from the experiment, and duct modal analysis was performed at the duct inlet plane of the simulations.