Come and enjoy a lunch & learn Technical Seminar hosted by the AIAA Hampton Roads Section at the NASA Langley Research Center. This lunch and learn will be offered on site in the Pearl Young Theater but also virtually for our colleagues who are not local to Hampton Roads. Here are the details for this month's talk.
IN-PERSON RSVP: In-person Registration - Rizzi
Title: Characterization of Urban Air Mobility Vehicle Operational Noise and Community Noise Impact
Presenter: Dr. Stephen A. Rizzi
Abstract: This presentation focuses on the process for predicting urban air mobility (UAM) vehicle noise at the source and how that can be used to estimate and mitigate the impact on the community. Following conceptual design, in which the vehicle is appropriately sized for its intended mission, a comprehensive analysis must be performed for a range of operating conditions spanning the flight envelope to determine the corresponding configurations of the vehicle, that is, the trimmed states. Many UAM vehicles have redundant controls, so the trimmed state for any particular operating condition may not be unique, with some states producing more noise than others. For each trimmed state, the noise produced by each source, for example, steady and unsteady rotor noise, inclusive of propulsion airframe aeroacoustic effects, may be computed and so-called source noise (hemi)spheres generated. The data may be used for analyses supporting noise certification or serve as input to auralizations (turning the numerical data into an audible sound) that can subsequently be used as part of a perception-influenced acoustic design process. Land use planning tools, including those using simulation and integrated modeling approaches, also use these (or derived) data to generate noise exposure maps on the ground. Finally, the data may be used to support development of low noise flight operations using an acoustic flight simulator or acoustically aware flight control.
Bio: Dr. Stephen Rizzi is the NASA Senior Researcher for Aeroacoustics. He leads a diverse research team focusing on development of revolutionary tools and methods for perception-Influenced acoustic design of transformative air vehicles, with application to all of NASA Aeronautics Research Mission Directorate programs. He is author/co-author of over 150 journal and conference publications and is recipient of a NASA Exceptional Service Medal for "sustained and exceptional contributions to the acoustics discipline." He is a Fellow of the AIAA, past-Chair of the AIAA Aeroacoustics Technical Committee, and Co-Lead of the NASA Urban Air Mobility Noise Working Group. Dr. Rizzi received his M.S. and Ph.D. in Aeronautics and Astronautics from Purdue University, and his B.S. in Aerospace Engineering from the State University of New York at Buffalo.
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Matthew Galles
NASA Langley Research Center
Hampton VA
matthew.b.galles@nasa.gov------------------------------