TY - GEN
T1 - Investigation of propeller-wing interaction noise and the potential contribution to eVTOL noise
AU - Mukherjee, Bhaskar
AU - Brentner, Kenneth S.
N1 - Publisher Copyright:
Copyright © 2020 by the Vertical Flight Society. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Interactional aerodynamic phenomena are expected to play an important role in conception, design and optimization of eVTOL configurations. Prediction of the complex three-dimensional and unsteady flowfield generated by the main rotary wings system (propellers, rotors) with other components of the eVTOL vehicle (wing, fuselage etc.) is critical for prediction of overall performance, stability and noise generation as a function of flight conditions. This paper focuses on breaking down these complex mechanisms and focusing on the simplest aerodynamic terms and their individual contribution to noise. The paper describes preliminary work done to explore the contribution of unsteady aerodynamic components to propeller-wing interaction noise for low tip-speed propellers. The Vortex Lattice Method in CHARM was partially validated against available propeller-wing wind tunnel data, with some modeling deficiencies identified. A historically unique case of noise measurements from the Vietnam-era YO-3A surveillance airplane is revisited and attempts were made to understand the unique trends of the experimental data presented in the report, while identifying the role of various components of the unsteady aerodynamics in low tip-speed propellers. This paper should be considered a progress report – more work needs to be done before final conclusions can be made.
AB - Interactional aerodynamic phenomena are expected to play an important role in conception, design and optimization of eVTOL configurations. Prediction of the complex three-dimensional and unsteady flowfield generated by the main rotary wings system (propellers, rotors) with other components of the eVTOL vehicle (wing, fuselage etc.) is critical for prediction of overall performance, stability and noise generation as a function of flight conditions. This paper focuses on breaking down these complex mechanisms and focusing on the simplest aerodynamic terms and their individual contribution to noise. The paper describes preliminary work done to explore the contribution of unsteady aerodynamic components to propeller-wing interaction noise for low tip-speed propellers. The Vortex Lattice Method in CHARM was partially validated against available propeller-wing wind tunnel data, with some modeling deficiencies identified. A historically unique case of noise measurements from the Vietnam-era YO-3A surveillance airplane is revisited and attempts were made to understand the unique trends of the experimental data presented in the report, while identifying the role of various components of the unsteady aerodynamics in low tip-speed propellers. This paper should be considered a progress report – more work needs to be done before final conclusions can be made.
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M3 - Conference contribution
AN - SCOPUS:85094915006
T3 - Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020
SP - 78
EP - 92
BT - Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020
PB - Vertical Flight Society
T2 - Aeromechanics for Advanced Vertical Flight Technical Meeting 2020, Held at Transformative Vertical Flight 2020
Y2 - 21 January 2020 through 23 January 2020
ER -