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Technical Paper

UAM Icing: Ice Accretion Experiments and CFD Icing Simulations on Rotors for eVTOL Unmanned Aircraft

2023-06-15
2023-01-1391
Urban air mobility (UAM) is a fast-growing industry that utilizes electric vertical take-off and landing (eVTOL) technologies to operate in densely populated urban areas with limited space. ...A small 15-inch rotor was selected to illustrate a multirotor UAV drone, while a large 80-inch rotor was chosen to represent a UAM passenger aircraft. The ice accretion experiments were conducted in an icing wind tunnel on the small 15-inch rotor.
Journal Article

Remotely Administered Psychoacoustic Test for sUAS Noise to Gauge Feasibility of Remote UAM Noise Study

2023-05-08
2023-01-1106
The National Aeronautics and Space Administration (NASA) remotely administered a psychoacoustic test in fall of 2022 as the first of two phases of a cooperative Urban Air Mobility (UAM) vehicle noise human response study. This first phase, described here, was a Feasibility Test to compare human subject responses with a previous in-person psychoacoustic test that found an annoyance response difference between small Uncrewed Aerial System (sUAS) noise and ground vehicle noise.

2023 Next-Gen UAM and Unmanned Aircraft Summit

2024-04-25
Presented by SAE International and Aerospace & Defense Technology magazine, the inaugural UAM and Unmanned Aircraft Summit offers insights into the future development of automated and unmanned aircraft.
Article

Vertical Flight Society applauds eVTOL innovation, Bell Nexus UAM concept

2019-01-10
The electric vertical-takeoff-and-landing (eVTOL) revolution is gaining momentum, as evidenced by the unveiling of the Bell Nexus hybrid-electric VTOL air taxi concept at the Consumer Electronics Show (CES), affirms Mike Hirschberg, executive director at the Vertical Flight Society (VFS), a non-profit organization working to advance vertical flight, in Fairfax, Virginia.
Journal Article

Next-Gen Maintenance Framework for Urban Air Mobility Vehicles

2022-05-26
2022-26-0008
Urban Air Mobility (UAM) vehicles are set to revolutionize the mobility of man and material in near future. One of the key areas to explore is how operational efficiency can be maximized through the next generation Maintenance framework. ...One of the key areas to explore is how operational efficiency can be maximized through the next generation Maintenance framework. The UAM operational models may fundamentally change how aircraft maintenance is conducted. An important aspect of UAM is low altitude flying. ...An important aspect of UAM is low altitude flying. This enables cellular technologies to be leveraged for air-to-ground as well as air-to-air communication.
Standard

LED Landing, Taxiing, Runway Turnoff, and Recognition Lights

2024-03-22
CURRENT
ARP6402B
This document includes recommendations of installations of adequate landing and taxiing lighting systems in aircraft of the following categories: a Single engine personal and/or liaison type b Light twin engine c Large multiengine propeller d Large multiengine turbojet e Military high-performance fighter and attack f Helicopter g Electric Vertical Takeoff and Landing (EVTOL) and Urban Air Mobility (UAM)
Journal Article

A Psychoacoustic Test for Urban Air Mobility Vehicle Sound Quality

2023-05-08
2023-01-1107
The test investigated the degree to which sound quality metrics (sharpness, tonality, etc.) are predictive of annoyance to notional sounds of Urban Air Mobility (UAM) vehicles (e.g., air taxis). A suite of 136 unique (4.6 second duration) UAM rotor noise stimuli was generated. ...These stimuli were based on aeroacoustic predictions of a NASA reference UAM quadrotor aircraft under two flight conditions. The synthesizer changed rotor noise parameters such as the blade passage frequency, the relative level of broadband self-noise, and the relative level of tonal motor noise. ...Forty subjects listened to the suite of UAM noise stimuli in the EER and judged each sound individually on a standard scale of annoyance.
Research Report

Unsettled Issues Concerning Urban Air Mobility Infrastructure

2021-11-15
EPR2021025
Urban air mobility (UAM) refers to urban transportation systems that move people by air. UAM offers the potential for reducing traffic congestion in cities and providing an integrated approach to urban mobility. ...Unsettled Issues Concerning Urban Air Mobility Infrastructure discusses the infrastructure requirements to effectively integrate UAM services into the overarching urban transportation system to enable multimodal trips and complete origin to destination travel.
Technical Paper

Operating the Navigation Database Server from Ground Station

2022-05-26
2022-26-0028
The main aim of operating the navigation database server from ground station (Web/cloud) is to operate a single navigation database server across all aircrafts and navigation database updates can be performed at one place. which will be effective and quick, thus no need to update the navigation database in each flight for every 28 days. UAM refers to a safe and efficient air transportation system that uses transformative new airborne technology, manned and unmanned, to move people and goods in a metropolitan area, operating the navigation data base server from ground station might be the first step towards including the FMS system in urban air mobility (UAM). the proposed system can run as standalone application and provides serveries to all aircrafts from single resource; thus, the system will provide services with low cost. ...UAM refers to a safe and efficient air transportation system that uses transformative new airborne technology, manned and unmanned, to move people and goods in a metropolitan area, operating the navigation data base server from ground station might be the first step towards including the FMS system in urban air mobility (UAM). the proposed system can run as standalone application and provides serveries to all aircrafts from single resource; thus, the system will provide services with low cost.
Research Report

Key Technology Challenges of Electric Ducted Fan Propulsion Systems for eVTOL

2023-11-22
EPR2023027
Electrical vertical takeoff and landing (eVTOL) vehicles for urban air mobility (UAM) are garnering increased attention from both the automotive and aerospace industries, with use cases ranging from individual transportation, public service, cargo delivery, and more. ...Based on the introduction and discussion of these important issues, this report will help eVTOL engineers understand the key technical issues and inspire them to develop the ideal solutions that will enable eVTOL vehicle deployment for UAM operations. Click here to access the full SAE EDGETM Research Report portfolio.
Journal Article

A New Safety-Oriented Multi-State Joint Estimation Framework for High-Power Electric Flying Car Batteries

2023-04-11
2023-01-0511
Battery states such as state of charge (SOC), state of temperature (SOT), and state of power (SOP) are of particular interest for urban air mobility (UAM) applications. This article proposes a new safety-oriented multi-state estimation framework for collaboratively updating the SOC, SOT, and SOP of lithium-ion batteries under typical UAM mission profiles that explicitly incorporates the underlying interplay among these three states. ...This article proposes a new safety-oriented multi-state estimation framework for collaboratively updating the SOC, SOT, and SOP of lithium-ion batteries under typical UAM mission profiles that explicitly incorporates the underlying interplay among these three states.
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