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eVTOL engineering takes flight

CES 2020: Hyundai shows craft for Uber air-taxi venture

Recent advancements in electric vertical takeoff and landing (eVTOL) aircraft have generated significant interest within and beyond the traditional aviation industry. ...With the dynamic and varying global challenges facing military operations, eVTOL aircraft can offer timely, on-demand, and potentially cost-effective aerial mobility components to the overall solution. ...Current eVTOL aircraft may not have the payload capacity for aerial transportation of heavy equipment or a large volume of supplies, but—for targeted missions—they can be valuable in select military applications.

Recent advancements of electric vertical take-off and landing (eVTOL) aircraft have generated significant interest within and beyond the traditional aviation industry, and many novel applications have been identified and are in development. ...One promising application for these innovative systems is in firefighting, with eVTOL aircraft complementing current firefighting capabilities to help save lives and reduce fire-induced damages. ...Early detection and suppression of wildfires could prevent many fires from becoming large-scale disasters. eVTOL aircraft may not have the capacity of larger aerial assets for firefighting, but targeted suppression, potentially in swarm operations, could be valuable.

This model is then utilized to undertake an initial protection coordination feasibility study for a candidate eVTOL electrical system architecture, exploring the associated device and system level operational capabilities and limitations.

Recent advancements of electric vertical takeoff and landing (eVTOL) aircraft have generated significant interest within and beyond the traditional aviation industry. ...Future eVTOL firefighting capabilities could include early detection and suppression, civilian rescue, and on-demand aerial deployment and extraction of firefighters. ...Unsettled Issues Concerning eVTOL for Rapid-response, On-demand Firefighting identifies the challenges to be addressed so that these capabilities and benefits could be realized at scale: Firefighting-specific eVTOL vehicle development Sense and avoid capabilities in smoke-inhibited environments Autonomous and remote operating capabilities Charging system compatibility and availability Operator and controller training Dynamic air space management Vehicle/fleet logistics and support First-responder and general public acceptance Click here to access the full SAE EDGETM Research Report portfolio.

The Use of eVTOL Aircraft During Natural Disasters presents issues that need to be addressed before eVTOL aircraft are integrated into natural disaster response operations: eVTOL vehicle development Detect-and-avoid capabilities in complex and challenging operating environments Autonomous and remote operations Charging system compatibility and availability Operator and controller training Dynamic air space management Vehicle/fleet logistics and support Acceptance from stakeholders and the public Click here to access the full SAE EDGETM Research Report portfolio. ...Recent advancements of electric vertical takeoff and landing (eVTOL) aircraft have generated significant interest within and beyond the traditional aviation industry, and many new and novel applications have been identified and are under development. ...The Use of eVTOL Aircraft During Natural Disasters presents issues that need to be addressed before eVTOL aircraft are integrated into natural disaster response operations: eVTOL vehicle development Detect-and-avoid capabilities in complex and challenging operating environments Autonomous and remote operations Charging system compatibility and availability Operator and controller training Dynamic air space management Vehicle/fleet logistics and support Acceptance from stakeholders and the public Click here to access the full SAE EDGETM Research Report portfolio.

Advanced flight control system, aviation battery and motor technologies are driving the rapid development of eVTOL to offer possibilities for Urban Air Mobility. The safety and airworthiness of eVTOL aircraft and systems are the critical issues to be considered in eVTOL design process. ...The safety and airworthiness of eVTOL aircraft and systems are the critical issues to be considered in eVTOL design process. Regarding to the flight control system, its complexity of design and interfaces with other airborne systems require detailed safety assessment through the development process. ...The new features of flight control system for eVTOL are described to start function capture and architecture design. Model-based system engineering method is applied to establish the functional architecture in a traceable way.

Recent advancements in eVTOL aircraft have generated significant interest within and beyond the traditional aviation industry. ...With the dynamic and varying global challenges facing military operations, eVTOL aircraft can offer timely, on-demand, and potentially cost-effective aerial mobility components to the overall solution. ...The Use of eVTOL Aircraft for Military Applications: Last-mile Transport and Logistics explores the challenges that need to be addressed before identified capabilities and benefits can be realized at scale: Mission-specific eVTOL vehicle development Detect-and-avoid (DAA)capabilities in complex and challenging operating environments Autonomous and AI-enhanced mission capabilities Charging system compatibility and availability for battery-electric vehicles Simplified vehicle operations (SVO) training Vehicle/fleet logistics and support Secured supply chain management Acceptance from stakeholder services, military leadership, field commanders, and operating and support team members Click here to access the full SAE EDGETM Research Report portfolio.

The aerospace industry is undergoing a revolution with the large-scale development of eVTOL (Electric Vertical Take-Off & Landing) and MEA (More Electric Aircraft). These aerial vehicles, many of them unmanned vehicles (UAV), will serve a variety of service-related functions: Search and Rescue (SAR), Medivac, delivery and lift operations, aerial mapping, and, of course, human transportation [1].

The rapidly advancing field of Advanced Air Mobility featuring electric Vertical Takeoff and Landing capable aircraft will create an increased demand for commercial pilots. In addition, the automation schemes for these new aircraft designs will likely change the skills required and demands placed on pilots of these vehicles. Therefore, recruiters and training facilities must understand which basic performance resources predict success to identify the best candidates to learn to fly this new class of aircraft. This study assesses the basic performance resources of ab initio students and experienced pilots in electric vertical takeoff and landing aircraft simulators. Researchers recruited 82 military volunteers to participate in this study by spending one day learning to fly one of the two simulators available. This study included approximately equal numbers of ab initio students and rated pilots.

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. ...Considering the intended role of eVTOL vehicles, ducted-fan systems are ideal choice for the propulsor, as the duct provides a physical barrier between the rotating blades and the human, especially during the take-off and landing phases. ...Key Technology Challenges of Electric Ducted Fan Propulsion Systems for eVTOL introduces the main bottlenecks and key enablers of ducted-fan propulsion systems for eVTOL applications.

Advancements in electric vertical takeoff and landing (eVTOL) aircraft have generated significant interest within and beyond the traditional aviation industry. ...With the dynamic and varying public service operations, eVTOL aircraft can offer potentially cost-effective aerial mobility components to the overall solution, including significant lifesaving benefits. ...The Use of eVTOL Aircraft for First Responder, Police, and Medical Transport Applications discusses the challenges need to be addressed before identified capabilities and benefits can be realized at scale: Mission-specific eVTOL vehicle development Operator- and patient-specific accommodations Detect-and-avoid capabilities in complex and challenging operating environments Autonomous and artificial intelligence-enhanced mission capabilities Home-base charging systems for battery power platforms Simplified operator and support training Vehicle/fleet maintenance and support Acceptance and participation from stakeholder services, local and state-level leadership, field operators, and support team members Click here to access the full SAE EDGETM Research Report portfolio.

Based on the system of battery powered CY300 eVTOL, a fuel cell-battery hybrid system (FBHS) in steady-state operation as a potential propulsion system for CY300 eVTOL is proposed. In order to analyze the feasibility of FBHS-powered eVTOL system, a mathematical model is established to evaluate the proposed system performance considering various irreversible effects. ...For hydrogen storage technology selections, high pressure gaseous hydrogen storage technologies are suitable enough for short-range eVTOLs, but liquid hydrogen powered eVTOLs can be an ideal solution for long-endurance aircraft. ...Electric vertical take-off and landing (eVTOL) is defined as vertical lift aircraft propelled by electric power and capable of carrying people.

Most emerging electric vertical takeoff and landing (eVTOL) aircraft feature distributed electric propulsion systems with automation features that simplify operations for future pilots. ...Air Education and Training Command Detachment 62 (AETC/Det 62) sought to test this theory as part of a larger study involving 70+ participants, two eVTOL platform simulators, and multimodal assessments of flight performance. In the present report, we compared expert ratings of flight performance of pilots who do not have prior pilot experience or training (herein referred to as ab initio pilots; i.e., 0 flight hours) to those of experienced pilots (i.e., >300 flight hours) in either a semi-automated or highly-automated simulated eVTOL platform. ...., >300 flight hours) in either a semi-automated or highly-automated simulated eVTOL platform. All participants received a brief orientation of the controls, then flew a scripted flight profile four times with guidance from an instructor pilot.

With increasing interest in the urban air traffic market for electric Vertical Take-Off and Landing (eVTOL) vehicles, there are opportunities to enhance flight performance through new technologies and control methods. ...This article presents a wind tunnel experiment aimed at analyzing the aerodynamic characteristics of the propulsive wing for the novel eVTOL vehicle. The experiment encompasses variations in angels of attack, free stream velocities and fan rotational speeds. ...The propulsion wing shows promising application prospects for eVTOL vehicle.

Recent advancements of electric vertical takeoff and landing (eVTOL) aircraft have generated significant interest within and beyond the traditional aviation industry, and many new and novel applications have been identified and under development. ...The on-demand logistics capabilities could be enhanced by the availability of new-generation eVTOL aircraft and their forthcoming autonomous operation. The ability to land and takeoff at many unconventional locations makes eVTOL aircraft valuable assists for complementing and enhancing on-demand logistic needs. ...The ability to land and takeoff at many unconventional locations makes eVTOL aircraft valuable assists for complementing and enhancing on-demand logistic needs. To make such operations truly productive is not easy; there are reassociated challenges that needed to be addressed to enable the benefit of such a system.

Electric vertical takeoff and landing (eVTOL) aircraft, which is used extensively in both military and civilian fields, has the advantages of good maneuverability, high cruising speed, and low requirements for the takeoff and landing modes. ...Robust and stable control is crucial to ensuring its safety because the dynamics model of an eVTOL aircraft will change significantly between fixed-wing and vertical takeoff and landing mode. ...In this paper, we first study the structural characteristics of the eVTOL aircraft and establish its dynamic model by considering typical flight modes and mechanical parameters.

Utilizing scientific models and real-world data, the study outlines the required battery technology and electrical propulsion specifications for eVTOLs with effective commercial load capabilities. For eVTOLs operating in the 300 km range, aviation-grade batteries must achieve energy densities between 300-600 wh/kg. ...This overview and study article scrutinizes the evolution and challenges of electric vertical takeoff and landing aircraft (eVTOL), with a primary focus on airworthiness and safety certification. The paper discusses key issues such as high-energy-density aviation-grade batteries and the light weighting of electrical propulsion systems. ...This article also proposed better platform which is more conducive to testing the propulsion and battery systems as well as the overall design of electric aircraft, especially eVTOLs. By establishing this more advanced platform, we aim to engage industrial partners both in China and internationally in various aspects such as propulsion technology, battery and material technology, and the overall design, manufacturing, and operation of eVTOL to meet airworthiness and safety requirements.

Electrical Vertical Takeoff and Landing (eVTOL) vehicles hold great promises for revolutionizing urban mobility. Their emergences as a transformative transportation technology has led multiple Original Equipment Manufacturers (OEM) competing for market share, with important variety of technical solutions, all necessitating to demonstrate the compliance to safety requirements and regulations. ...The purpose of this paper is to present and illustrate one work performed on the definition of a safe Flight Control System for eVTOL, leveraging the capacity of a MBSA based approach to ensure high level of agility and rapid responsiveness. ...Then, an example of eVTOL Flight Control System architecture and safety analyses will be detailed to picture how MBSA, coupled with a generic component library, can provide an easily adaptable safety solution.