세미나

The demand for a novel transportation system featuring vertical take-off and landing (VTOL) capabilities, low-noise performance, and environmentally friendly power sources, commonly referred to as advanced air mobility (AAM), has experienced a significant surge, particularly for public purposes such as deliveries and medical emergency service. However, it is crucial to proactively address potential risks related to safety, noise, security, and environmental impacts for the successful integration of AAM as a new transportation system. Among these concerns, noise holds a pivotal role and noise disruptions stemming from AAM operations directly affect passengers and nearby residents. An increase in noise pollution-related complaints could potentially hinder public acceptance of this innovative mode of transportation. Therefore, designing low-noise aircraft or developing noise- reduction technologies is important for the growth of the AAM industry. The noise characteristics of AAM aircraft employing distributed electric propulsion (DEP) systems will not be similar to the noise produced by traditional rotorcraft due to the mutual interactional effects. In this presentation, the impacts of interactional phenomena on the aerodynamic and acoustic performance of rotor systems are investigated using high- fidelity computational approaches. A novel noise reduction technology for AAM aircraft will also be introduced.