Director customer business
Synopsis: In this keynote presentation, Olaf Otto, director customer business, Rolls-Royce Electrical, will discuss new developments in hybrid electric propulsion systems for aircraft.
VP commercial programs
Aurora Flight Sciences, A Boeing Company
Synopsis: In this presentation Diana Siegel will discuss the trade offs between a hybrid approach and an all-electric approach for urban air mobility.
chief operating officer
Airbus ExO Alpha
Synopsis: Details will be added shortly
Vertical Aerospace Ltd.
Synopsis: In this presentation Tim Williams, chief engineer, will provide an overview of the current activities at Vertical Aerospace Ltd and the technology challenges they face in the development of a new winged eVTOL that the company aims to certify by 2024.
Lead Engineer Hydrogen Power Systems
Royal Netherlands Aerospace Centre
Synopsis: The last couple of years the Netherlands Aerospace Centre worked on hydrogen powered electrical systems for aviation with the aim to reduce CO2 emissions. A technology roadmap is defined for a gradual increase in electrical power up to 1 MW and beyond. An example is the hydrogen powered drone HYDRA-1 and the new fixed wing platform HYDRA-2, for which the progress will be highlighted. NLR acquired an electrical aircraft the Pipistrel Velis Electro and is conducting flight test on a regular bases. The Pipistrel is being prepared for a Hydrogen Range Extender for which certification is in preparation.
Head of energy systems integration
Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Synopsis: In this presentation Dr Josef Kallo who oversees electrochemical systems integration, including fuel cells, batteries and propulsion for aircraft at DLR, will update the symposium on progress towards a hydrogen fuel cell propulsion system for passenger aircraft.
Honeywell International Inc
Synopsis: Entry into service projections of various platforms for different business segments will be presented in light of the latest business environment. System requirements will be developed to satisfy various platforms. Architectural, systems and components provisions to achieve these goals will be presented. Considerations will be given to the level of integration, power distribution busses, partial discharge effects, EMI, power quality, high temperature hardware and thermal management. Quantitative data will be shown to support the proposed solutions. Electric propulsion units, power generation and distribution systems will be covered. Improvements of electric rotating machines and power electronics components are covered.
CIRA - Italian Aerospace Center
Synopsis: Use of Hybrid electrical propulsion for commercial transport aircraft could best strongly limited by available battery power density. Nevertheless, specific characteristics of electrical motor could be used to design non conventional configuration using innovative solutions such as Distributed Electrical Propulsion (DEP), Wing tip propeller and boundary layer ingestion. All these aspects have to be taken into account in the preliminary design phase. Preliminary design tools are based on classical approach and are not able to evaluate these effects. Extensive CFD has been performed and used to derive simplified methods to simulate DEP, Tip Propeller and BLI in the preliminary design.
Head of department of hybrid propulsion systems
CENTRAL INSTITUTE OF AVIATION MOTORS
Synopsis: The concept of the unmanned amphibian aircraft with the maximum take-off mass of 8000kg and the distributed along wing propellers rotated by the electric motors is presented. The electric motors are powered by a turbogenerator based on helicopter turboshaft engine with a maximum output power of 1600kW. Such a distributed propulsion system provides low stall, take-off and landing speed, that allows the aircraft to draw water from relatively small lakes and rivers. Also it allows water bombing at low speeds, which significantly increases the efficiency of firefighting operations.
co-founder and CEO
Synopsis: Ampaire is test flying the world's largest hybrid electric plane, with plans to conduct demonstration flights on commuter airline routes in the coming months. The company is on the fast track to introducing cleaner, quieter, less costly aircraft to benefit airline and general aviation operators, and improve the passenger experience. The future begins with in-service aircraft adapted for electric propulsion and proceeds to exciting new, clean-sheet, high-performance all-electric aircraft. Ampaire co-founder and CEO Kevin Noertker returns to update the symposium to update us on Ampaire's vision, plans and industry-leading progress toward making a new era of electric aircraft a reality.
Business development director
Synopsis: This presentation will look into the promise made by electrification and will offer a threshold upon which the electric aircraft becomes a technical and economic feasibility, competitive with its piston-engine counterparts. The presentation will review topics like operational weight (battery weight), entry into service (battery availability), acquisition costs (battery costs), operational costs (electricity costs), and turnaround time (charging time). Finally, the presentation address the availability of funding for the 200+ projects currently under development, the extra costs required for certification in comparison with the less expensive remotorization of legacy models, and the impact created by the 5G high-speed electronic office versus traveling.
Business area lead eVTOL
Synopsis: Rolls-Royce has developed the propulsion and distribution system for the CityAirbus demonstrator, an all-electric multicopter designed to demonstrate proof of concept for carry up to four passengers at a maximum speed of 75 miles per hour. The CityAirbus had its first untethered flight in December 2019 and is currently undergoing a more extensive experimental test campaign. In this presentation Gabriele Teofili, Business Area Lead eVTOL for Rolls-Royce Electrical, will update the symposium on the technology and capabilities that can help to meet the specific requirements of eVTOL propulsion systems.
SERAFIN ESCUDERO FRAILE
R&D project leader / technical leader
Synopsis: Altran's research regarding hybrid and electric aircraft in R&D projects offers a good knowledge base for developing new geometries, taking into account advantages of new electric concepts. Under the FAR CS-23 regulations, an aircraft has being designed, not only with the idea of replacing combustion aircraft of that size, but also, with the aim of opening a new type of air travel, more efficient, safety and respecting. Airplane tours without contamination, with a better passenger experience. Analytical calculations, CFDs and structural analysis studies are going to be presented for a fully electric concept, changing the perspective on design methodologies.
Synopsis: Battery systems specialist Electroflight provides an overview of the technical challenges faced in the design, build and test of a bespoke battery system as part of the Rolls Royce led ACCEL project partly funded by UK government. Exploring the key topics of thermal runaway management, cell monitoring, among others. The presentation will explore these themes and the projects findings in the wider context of future commercial applications and the path towards certification.
Synopsis: With hybrid and electric VTOL airtaxis development, we are called to support an emerging technology that has an amazing impact on the way people are transported allowing for safer and greener urban mobility. Many challenges need to be solved such as use of composite materials, hybrid and fully electric propulsion, passengers safety and air traffic management. Further, VTOL aircraft must be certified for HIRF and Lightning! The presentation reviews the standards to be applied; discuss the challenges of VTOL vehicle with regards to the lightning and HIRF environments. Finally we will illustrate the role of numerical modeling for certification.
Faradair Aerospace Limited
Synopsis: Description of the presentation will be added shortly
Synopsis: Energy density improvement has been seen as the major subject to support electric-hybrid aviation. But we know that trees don't grow to the sky and for the next ten years industry-available batteries will hardly be able to double energy density from their present value. This presentation shows that aviation batteries will need high levels of maturity to comply with safety (and certification) requirements. They will not directly jump from laboratories to aircraft, and safety and economic considerations are at least as important as energy density.
Head of Aviation Electronics
Synopsis: Over the last decade new technologies in power electronics like WBG devices enabled the development of systems with highest power densities. The presentation will give a short overview about latest trends in power electronics and focus on an 15 kW SiC electric drive inverter developed as part of the EU funded project AutoDrive. The integrated motor-inverter drive unit uses a fail-operational six-phase topology and features a unique passive cooled thermal design, utilizing optimized thermal capacity of the drivetrain nacelle to run in short-time thermal overload conditions like starting from high temperature airfields.
head of product
HES Energy Systems l by H3 Dynamics
Synopsis: This presentation will provide a case study of the hydrogen-electropropulsion system being developed as part of the Element One aircraft program, a regional hydrogen-electric platform designed to carry passengers over long distances without emitting any carbon during flight. This program merges HES Energy Systems' ultralight hydrogen fuel cell expertise with the latest distributed electric propulsion technologies. The modularity of the system simplifies the scale-up from drones to small planes while insuring safety with redundancies and fast refueling.
Synopsis: The presentation will address the challenges in creating a digital twin by modeling and simulating a high power density generator system that enables hybrid electric propulsion. Compact and efficient generators are key technologies that support the goals of hybrid electric propulsion and being able to analyze their performance and behavior as a system in the early design stages is critical to develop an optimum system. Modeling challenges, technical solutions, as well as simulation results will be presented.
aerospace industry director
Synopsis: Despite tremendous advances in electrical power system technology, the specific power advantage will ensure that gas turbine technology remains a key part of commercial aircraft propulsion systems. But how to integrate the resulting hybrids and balance their different characteristics with respect to surge margin, handling bleed, or shaft speed? This presentation describes a highly successful approach based on an evolution of advanced gas turbine multi-point design. Results are put into context with respect to the findings of the Turbo electRic Aircraft Design Environment (TRADE) project, a European multi-year research effort.
Motor Design Ltd
Synopsis: High power density in e-motors is essential in future developments of electrical propulsion. Values of 20kW/kg can be achieved using very high permeability electrical steel, high currents, high frequency and special cooling systems with critical CO2. All the above have to be used while ensuring a that the fault operating rate stays at 1e-9 value. Rare-earth magnets can be used, but not absolutely necessary. Several solutions and configurations are investigated and presented: inner and outer rotor rare-earth magnet motors, induction motors, switched reluctance motors. Proposals for new research directions for e-motors are considered in this presentation.
strategic research advisor
Head of Environment and Policy Support Department
Synopsis: Considering the current kerosene-centric aviation system, a direct translation to a zero-emission solution seems impossible with today's technology. The only option with "true zero" emissions in-flight is fully electric, but this technology has size and range limitations, requiring a complete re-think of our aviation paradigm. We consider a concept, where smaller aircraft fly frequent legs to and from smaller airports in a true point-to-point model. These services can be fully sustainable, while also being more convenient and faster for passengers. NLR and Roland Berger have studied the technical potential and economic viability of such a concept.
OPAL-RT Germany GmbH
Synopsis: Verification and validation of the performance and reliability of power electronic systems is critical to the development of more-electric, electric and hybrid aircraft. Ensuring that power quality is maintained in a range of operational and fault conditions is essential but testing to do so is technically challenging, time consuming and expensive. Simulation-based validation of power electronic systems is computationally demanding and can take large amounts of time. In this presentation, the use of field programmable gate arrays (FPGAs) to accelerate power electronic simulation via parallel computation using tools that only require a basic level of FPGA expertise is described.
director of R&D
Synopsis: Details will be added shortly
head of research
Pipistrel Vertical Solutions d.o.o.
Synopsis: Details will be added shortly
Politecnico di Torino
Synopsis: The hybrid propulsion is having increasingly relevance in the regional aircraft segment. New propulsive concepts have been developed with different level of electrification. These concepts have some important effects on On-Board Systems (OBS) architecture design. In general, the increase of propulsion electrification leads to a further electrification of OBS and their modification to adapt to the new means of connection with the propulsion system. This contribution, based on the results of PROSIB national research project, deals with the definition of the more suitable OBS architectures according with the innovative and electrified propulsion system.
Project lead hybrid-electric flight demonstrator
Synopsis: This presentation will review the project to develop & integrate the propulsion system for the APUS i-5 plane which seeks to demonstrate the practical application of hybrid electric technology for a 4500kg conventional take-off and landing flight test vehicle. The system could be used across a range of transport platforms to enable distributed electric propulsion and will undergo several iterations to continuously improve power and energy density on complete system level to enable the introduction of low-emission hybrid-electric platforms into the market.
Technical lead, Emerging Aviation Products
Synopsis: Electric-Hybrid or full electric aircraft propulsion systems powered by energy storage systems can significantly reduce aircraft CO2 , NOx emissions and noise. This market potential offers novel opportunities to the Aviation industry. Propulsion batteries for Aviation present many challenges from the cell selection and the total energy storage required, to the form factor and the standard constraints and certification. Challenges lie in increasing energy and power density of Lithium battery systems and optimize aircraft integration while providing safe and reliable solutions. The rise of new chemistries and solid-state technology are a game changer for the industry.
The University of Nottingham
Synopsis: This presentation will share with aerospace community a recent development of integrated drive system for turboprop hybridization within the EU H2020 CleanSky programme. The developed drive system enables green-taxiing of turboprop while on ground with engine off and works as a generator when turboprop in the air. Some of the key features of the developed system include: high-speed permanent machine (up to 18,000rpm), high-power density (11.8kW/L for power converter, 35.3kW/L & 7.2kW/kg for machine active parts), integrated cooling design for high-temperature operation (>130oC ambient temperature), sensorless control etc.
professor of electrical engineering
University of Bristol
Synopsis: EVtol propulsion systems fall into two camps: multiple rotor system with simplex power channels per rotor and low number of rotors each powered with a fault tolerant electrical drive system. The paper will compare these two approaches and present architectures for fault tolerant electrical drives. The route to achieve 10-7 per flight hour availability on a single output shaft electrical drive will be described. The presentation will be illustrated with practical results from radial- and axial-flux fault tolerant electrical drives and will describe the design processes and tools that can be used.
University of Naples Federico II
Synopsis: The presentation will deal with aircraft preliminary design tools developed at University of Naples to deal with hybrid and electric aircraft. The methodologies and tools developed integrates aero-propulsive interaction (DEP and tip propellers) as well as electric powertrain technologies (batteries and fuel cells). The preliminary design phase is made with modified semi-empirical approached while more detailed analysis is made with a simulation-based approach which includes also estimations of structural effects arising from electric propulsive chain integration. National financed projects (PROSIB) and CS2 projects are currently running on design of regional hybrid aircraft.
University of Pisa
Synopsis: The combination of unconventional aircraft configurations with hybrid-electric propulsion has the potential to cut CO2 emissions and pave the way for a sustainable aviation. This paper aims to present a methodology for the conceptual design of hybrid-electric aircraft with box-wing configuration, known as "PrandtlPlane". The methodology is based on the interaction between two in-house developed tools, the first aimed to size the hybrid-electric system for a given mission and the second one to maximize the aircraft performance. The activity is part of the Italian research project "PROSIB", whose goal is to develop enabling technologies for the regional aircraft category.
Research lead - electric propulsion
University of South Wales
Synopsis: An advanced motor design is proposed to address the challenging needs of electric drive systems applicable to electric and hybrid propulsion. Novel system architecture is considered, and its advantages quantified in line with the major components like electric rotating machines, controllers and speed reduction elements. Criteria for selection of the novel architecture will be presented, focusing on new materials, rotor and stator manufacturing technics, power electronics, thermal management, power distribution and optimisation. Different levels of system and component integration are considered as a major driver to achieve the best power density. Results from trade-off studies will be presented.
Warwick Manufacturing Group
Synopsis: Assessment and explanation of the synergies between automotive and aerospace eMachine manufacturing as aerospace moves to the requirements for higher volumes of eMachines. Discussion will develop how the system approach to design of traction eMachines has application for aerospace electrification and will illustrate how the lessons learn from the early years of automotive can be directly applied to the issues of aerospace electrification.
WMG, University of Warwick
Synopsis: Lithium-ion and their future variants are the only battery technology that can meet the electrification and hybridisation target of regional and urban air vehicles between 2020-2030, outlined by ATI and other government authorities. Recent years, battery energy and power density have seen a gradual increase; however, battery thermal runaway and safety prognosis have received little research focus. This likely due to the fact that lithium-ion battery research is currently dominated by non-aerospace applications e.g. automotive, which don’t share the same strict safety regulations. WMG is one of the leading academic organisations developing battery functional safety prognosis systems for aerospace applications.
Founder and CEO
Synopsis: Founder and CEO of ZeroAvia, Val Miftakhov would like to discuss the company’s breakthrough zero-emission, hydrogen-fueled electric powertrain for commercial airlines. His goal is to accelerate the transition to sustainable aviation by giving aviation customers and airframe manufacturers a zero-emission option for regional flights, which are roughly half the world’s airline trips. Through an in-depth analysis, Mr. Miftakhov will explore the power of hydrogen fuel cells and its capabilities in the aerospace, reaching hundreds of miles due to its power dynamics compared to batteries.