A Synthesis Method to Auralize Rotor Noise During Transitional Flight

Siddhartha Krishnamurthy; Brian C. Tuttle; Aric R. Aumann; Stephen A. Rizzi; Leonard V. Lopes; Stefan J. Letica; D. Douglas Boyd, Jr.

NASA NTRS · 20240009441

A Synthesis Method to Auralize Rotor Noise During Transitional Flight

Siddhartha Krishnamurthy·Brian C. Tuttle·Aric R. Aumann·Stephen A. Rizzi·Leonard V. Lopes·Stefan J. Letica·D. Douglas Boyd, Jr.

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Abstract

This paper describes a new capability to synthesize Urban Air Mobility (UAM) vehicle rotor/propeller loading and thickness noise and broadband self noise for transitional flight auralization. A vehicle smoothly transitioning between flight states is approximated here as transitioning in time through a series of trimmed steady-state flight conditions. To generate information that helps synthesize loading and thickness noise for transitional flight, this paper describes the development of a tool that combines blade loading, motion, and geometry data from a series of separate trimmed flight states. This paper also describes a method to combine broadband self noise acoustic predictions, each representing a separate trimmed flight state, to synthesize broadband self noise for transitional flight. Different flight profiles of the six-passenger NASA UAM Quadrotor reference vehicle demonstrate these capabilities, with each profile specified by a series of trimmed flight states.

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Auralization Auralisation Broadband Noise Self Noise Loading Thickness Noise Synthesis Transitional Flight Rotorcraft Urban Air Mobility Advanced Air Mobility NASA Auralization Framework

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Siddhartha Krishnamurthy, Brian C. Tuttle, Aric R. Aumann, Stephen A. Rizzi, Leonard V. Lopes, Stefan J. Letica, D. Douglas Boyd, Jr.. A Synthesis Method to Auralize Rotor Noise During Transitional Flight. https://ntrs.nasa.gov/citations/20240009441

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