The aviation sector is rapidly evolving with the Research and Development of more electric propulsion systems and a variety of new technologies of Vertical Take-Off and Landing (VTOL) manned and Unmanned Aerial Vehicles (UAVs). Noise impact on communities has been identified as one of the main limiting factors for the wider adoption of these new aerial technologies. Within the framework of a perception-influenced engineering approach, research has been undertaken to develop models to aid rotor systems design for low noise impact. In order to achieve that goal, the relationship between sound quality and first order design parameters in rotor systems has been investigated. Three case studies are considered: (i) contra-rotating vs. single rotor systems, (ii) varying blade diameter and thrust in both contra-rotating and single rotor systems, and (iii) varying rotor-rotor axial spacing in contra-rotating systems. Based on a listening experiment, where participants assessed a series of sound stimuli with varying design parameters, a psychoacoustic annoyance model optimised for rotor noise has been developed and validated.
The webinar will be hosted on the Zoom platform and attendees will be provided with a link to join closer to the event start.