Efficient prediction of urban air mobility noise in a vertiport environment

Fuerkaiti, Yunusi; Casalino, Damiano; Avallone, Francesco; Ragni, Daniele

doi:10.1016/j.ast.2023.108410

Cited by 25 publications

(3 citation statements)

References 19 publications

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“…An advanced propagation model that accounts for sound wave refraction and multiple reflections was developed from this investigation. The results suggested that to predict vertiport noise signatures correctly, researchers must account for terrain shadow zones and multiple reflections from terrain and object surfaces (Yunus et al, 2023).…”

Section: Evtol Noisementioning

confidence: 99%

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Analysis of noise distributions at heliports and vertiports: A guide for site selection and land use planning

Ison

2023

J. airl. airpt. manag.

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Purpose: The purpose of this study was to examine the noise profiles of helicopters and eVTOLs at heliports and vertiports in order to support site planning and the development of local land-use compatibility guidelines. Design/methodology/approach: This study used existing helicopter and eVTOL sound profiles to develop noise distribution contours for heliports and vertiports. This study collected noise data from available studies on helicopters and eVTOLs. This data was then entered into dBmap noise mapping tool to develop noise maps for helicopters and eVTOLs. Three air transit facility configurations for each aircraft category were analyzed: open (unobstructed), urban, and rooftop. Two additional vertiport configurations were created by overlaying building and noise data with Google Earth imagery. Noise data was entered into dBmap for processing. Noise contours were mapped for three configurations for both aircraft categories.Findings: Key observations from the noise distribution analysis showed that open (unobstructed) facility configurations have even noise distributions for both eVTOLs and helicopters. Noise maps for urban locations showed areas of attenuation and asymmetrical patterns due to the interactions of sound waves with surrounding buildings. An analysis of a rooftop installation of a heliport or vertiport provided some noise mitigation advantages. Noise contour distributions closely matched those outlined in previous research; however, the sound intensities modeled in this study were lower than indicated in exigent research. Assessments were also conducted for real-world sites with potential future use as vertiports in Seattle, Washington, and Chicago, Illinois.Practical Implications: This study suggests that current land use compatibility guidance may be inadequate for rotorcraft and eVTOL operations. Findings suggest the development of symmetrical noise-impact zones centered around heliports and vertiports. Examples of these zones are outlined, and recommendations for future research are provided. Local planners can use the data from this study to make educated choices about the siting of heliports and vertiports. Additionally, the findings can assist planners in the development of zoning and land use compatibility standards.Social Implications: Land use compatibility standards for heliports and vertiports will help ensure a synergistic relationship between local communities and these air transit facilities. The data from this study can also help protect individuals from excessive noise and annoyance.Originality/value: This study is one of the few on this topic and the only known research on noise distributions of helicopters and eVTOLs with a particular focus on land use compatibility

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Section: Evtol Noisementioning

confidence: 99%

“…The study predicts significant differences in anticipated footprints with and without wind flow, especially in terrain shadow regions and refractive impact regions. (Barbarino, Petrosino & Visingardi, 2022;ENAC, 2016;Yunus et al, 2023).…”

Section: Evtol Noisementioning

confidence: 99%

Analysis of noise distributions at heliports and vertiports: A guide for site selection and land use planning

Ison

2023

J. airl. airpt. manag.

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“…At that stage of conceptual development, corresponding high-density vertidrome and UAM network analyses have to be executed in a laboratory environment based on a proper assessment and modeling framework. Recent examples among others address the prediction of noise exposures of vertidromes [6], vertiport capacity assessment based on three types of queuing systems [7], city-wide autonomous vertidrome network operations [8], and optimized vertidrome network capacity distribution based on efficient ride matching and fleet management [9].…”

Section: Introductionmentioning

confidence: 99%

Vertidrome Airside Level of Service: Performance-Based Evaluation of Vertiport Airside Operations

Schweiger,

Knabe

2023

Drones

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This paper presents the Vertidrome Airside Level of Service (VALoS) framework, a novel performance metric designed to evaluate airside traffic flow operations at vertidromes in the context of Urban Air Mobility (UAM). As the UAM industry rapidly evolves, the need for a comprehensive evaluation framework becomes increasingly important. The VALoS framework provides a performance-based approach to evaluating vertidrome traffic flow performance, considering metrics like average passenger delay, air taxi in-flight delay, and vertidrome punctuality. Unlike existing Level of Service approaches, the VALoS framework unifies the requirements of various stakeholders, the passenger, the air taxi operator, and the vertidrome operator each with their own performance metric and target. It provides a multi-faceted approach covering airside air and ground traffic flows, arrivals and departures, and performance changes during strategic planning and tactical execution phases. The VALoS is evaluated at 15-min intervals while considering changing stakeholder performance targets and operational uncertainties. For the reference use case, the study demonstrates the significant impact of short-term disruptions, while stochastic deviations can be neglected. Higher traffic volumes due to changing demand/capacity ratios result in higher VALoS variability. The VALoS framework, together with a fast-time simulation, provides a versatile method for exploring future vertidrome traffic flows and supporting strategic vertidrome airside planning and integration. This integrated approach is essential for the evolving UAM vertidrome industry; aligning the interests of different stakeholders and promoting sustainable and efficient vertidrome planning and operation.

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