Development of experimental methods for acoustic measurements of propeller noise.

• Grant number: 25/04580-9
• Support Opportunities: Scholarships in Brazil - Master
• Start date: May 01, 2025
• End date: September 30, 2026
• Field of knowledge: Engineering - Aerospace Engineering - Aerodynamics
• Principal Investigator: André Valdetaro Gomes Cavalieri
• Grantee: Widmark Kauê Silva Cardoso
• Host Institution: Divisão de Engenharia Aeronáutica (IEA). Instituto Tecnológico de Aeronáutica (ITA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil
• Company: Ministério da Defesa (Brasil). Instituto Tecnológico de Aeronáutica (ITA). Divisão de Engenharia Mecânica (IEM)
• Associated research grant: 21/11258-5 - Engineering Research Center for the Aerial Mobility of the Future (ERC-AMF), AP.PCPE

Abstract

The development of eVTOLs (electric vertical takeoff and landing vehicles) is closely tied to the advancement of modern urban mobility, which seeks faster, more sustainable, and efficient transport solutions to address increasing city congestion. However, introducing these vehicles into urban areas presents significant challenges, particularly regarding propeller noise control. Research in this field is essential, as noise reduction is crucial for ensuring community acceptance and the feasibility of operations in densely populated urban centers. In this context, this project aims to develop experimental methods to measure propeller noise in wind tunnels using a microphone array and beamforming techniques. Installation effects, including the presence of nearby surfaces such as pylons or wings, will be analyzed. Additionally, noise reduction solutions might be proposed, such as surface treatments with acoustic liners or porous extensions. (AU)