Speakers

Speakers

James McMicking

ZeroAvia

Hydrogen-Electric Aviation - The Path to Zero-Emission Aviation

A growing chorus of experts predicts aviation will account for more than 25% of human-induced climate effects by 2050 if it continues on its current trajectory. Yet, by then, the planet must be at net-zero emissions to avoid the worst effects of global climate change, according to the United Nations. Furthermore, it is now increasingly understood that carbon emissions are responsible for half of aviation's in-flight emissions' full climate impact. With aviation on track to burn nearly 100 billion gallons of fuel per year, now is the time to talk about transitioning away from fossil fuels.

In this session, James McMicking, VP Strategy, will discuss ZeroAvia’s progress to date and current R&D initiatives underway. One such initiative is the Hyflyer II project. Supported by the UK Government, the project is set to deliver a breakthrough 19-seat hydrogen-electric powered aircraft. With the flight technology progressing to certification, green and low-carbon production and infrastructure are vital to support adoption. ZeroAvia has already developed a microcosm of what that will look like in the shape of its Hydrogen Airport Refuelling Ecosystem (HARE), developed alongside project partner EMEC. He will also detail a partnership with Royal Schiphol Group on testing and demonstrating hydrogen supply chain refueling operations and integration with airport operations.

Most importantly, James will convey how innovations like ZeroAvia's will impact the aviation industry, what its current major airline partners are trying to achieve regarding their sustainability goals, and when we can all expect to see large-scale zero-emission commercial jets in our skies.

James will cover what milestones to date ZeroAvia has completed and what other efforts exist that seek to tackle this growing issue. In addition, he will discuss ZeroAvia's product roadmap, starting with their first commercial offering in 2024.

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James' 20+ year career combines strategy and engineering across multiple sectors, notably automotive and aerospace. Following his Masters Engineering degree, James joined engineering consultancy Ricardo as a drivetrain engineer and went on to manage R&D projects for automotive clients around the world. Following a dual degree MBA at the Kellogg School of Management, James moved sectors to join management consultancy Booz & Company where he worked on and led a variety of strategy and operations projects for clients across aviation, defence, pharmaceuticals, distribution and finance.

It was from Booz that James joined the Aerospace Technology Institute as Chief Strategy Officer and one of its founding executives to set up the organisation in 2014. In 2018 James' role expanded to include responsibility for all business operations.

As CSO, James oversaw development of several strategic initiatives including the world's first dedicated commercial aerospace startup accelerator and project FlyZero, a one year strategic research project to understand the technical and commercial potential of zero-carbon emissions technologies for aviation. In 2021 James was awarded a commendation by the Air League for his contributions to the UK aerospace industry.

Satoru Hanyu

Fujikura HTS

Recent Status of Fujikura’s 2G HTS Wires

Fujikura has manufactured long-length 2G HTS wires to meet the requirements by hot-wall PLD method and IBAD technique. Recently HTS wires of high uniformity in critical current are required for several superconducting applications.

We updated line up of HTS wires with 2 - 3 – 4 -12 mm in width.

For mechanical properties, we have been improving process of film deposition and the slitting process with laser.

From 2013, we adopted laser slitting method, and the method is key point to control crack of REBCO film at slit edge. As a result delamination will be suppressed and our 2G HTS wires got reliability.

In this presentation, recent status and activities of REBCO HTS tapes at Fujikura Ltd. are introduced.

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Satoru Hanyu completed his graduate studies (Material science) in 2005

Joined Fujikura Ltd in 2005

Engaged deposition process of coated conductor and buffer layer since 2005.

~Main work~

・IBAD (ion beam assisted deposition) process.

・annealing process

James E Fesmire

GenH2 Corp.

Liquid Hydrogen Production, Distribution, and Safety for Electric Aviation

As hydrogen is clearly identified as a core requirement for achieving the goal of clean energy aviation, the practical necessity then becomes putting liquid hydrogen to work. The technology pieces are perhaps mostly available but putting them together in an integral whole becomes the challenge. These pieces include hydrogen liquefaction, storage, transfer, and distribution. The scale and quantities are a crucial tenant as well as understanding the end-use applications for different propulsion systems. The liquid hydrogen servicing systems, from end-to-end, are synergistic with the aircraft and how it used. Providing practical engineered systems that are safe and robust in the airport environment is paramount. One benefit of liquid hydrogen systems is that the minimum viable standard for functionality is high and thus the issues of materials, fabrication, and leakage are in the core of the equipment designs. Addressed are the different means of providing liquid hydrogen on-site as well as cryo-refrigeration plants for providing controlled storage and transfer capability. Dealing with boiloff must be addressed from both safety and economic standpoints.

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James E. Fesmire is co-founder, Executive Vice President, and Chief Architect of GenH2 Corp. for hydrogen infrastructure solutions and liquid hydrogen systems applications on land, sea, air, and space. He is founder and President of Energy Evolution LLC for technology implementation and training. He is also NASA-retired and founder of the Cryogenics Test Laboratory at Kennedy Space Center for novel energy technology and materials research. James holds a Master of Science in Mechanical Engineering (Materials Science) from the University of Central Florida and Bachelor of Mechanical Engineering from Auburn University. James has decades of experience in cryogenics and low-temperature problem-solving with specialty in all aspects of liquid hydrogen storage and transfer. He has served in leadership roles for boards and technical committees including ASTM International, International Institute of Refrigeration, International Organization for Standardization (ISO), Cryogenic Society of America, American Institute of Aeronautics and Astronautics, and the Cryogenic Engineering Conference. James is the author of extensive publications, patents, and books in thermal insulation systems, novel materials, and cryogenic testing. James is recipient of NASA medals for Distinguished Service, Exceptional Technology Achievement, and Exceptional Service; R&D 100 award; and Space Technology Hall of Fame medal for aerogel insulation technology. He is a member of the NASA Inventors Hall of Fame for developments in cryogenics, materials, and energy technologies.

Sriharsha Venuturumilli

Tokamak Energy Ltd

Advanced Technology Applications of Novel HTS Magnet Technology

High Temperature Superconductor (HTS) magnets are currently considered as a backbone for fusion energy by Tokamak Energy (TE). Non-insulated (NI) and partially insulated (PI) HTS coil technology has made the magnet technology very robust, while capitalising on the total potential of HTS tapes. TE has been a pioneer in pushing NI & PI coil technology for HTS magnets, with a growing portfolio of intellectual property. HTS magnet technology developed at TE makes it simple to design, develop and operate the magnets, with reproducible results. A HTS magnet formed by a stack of NI pancake coils developed by TE achieved a peak field of 24.4 T at 21 K. NI magnets are extremely hard to quench but when forced to quench several times they display no or minimal changes in their superconducting behaviour. The demonstrated mechanical stability, reproducible manufacturing process, ease of operation and inherent quench stability, is a strong basis for a commercially viable technology.

In the last two years, TE has examined several high DC field applications ranging from accelerator magnets, plasma thrusters, research magnets and medical imaging. TE is currently in collaboration with both the Paul Scherrer Institute (PSI) and Magdrive, actively involved in the design and development of HTS Superbend magnets for light sources and space thrusters respectively. Recently, an HTS coil developed by TE was tested to withstand rocket launch conditions. For high field magnets, it is often pointed out that the time constant of NI coil magnets is very large when compared with insulated magnets. This posed a significant challenge to enhance the turn-turn resistance, while retaining the advantages of the NI coil technology. TE has developed “partially insulated (PI)” coil technology, increasing the turn-turn resistance by several orders of magnitude but retaining the quench-safe benefits of NI coils at increasing scale. TE is actively developing this PI coil technology. 

TE has also made significant progress towards HTS magnet auxiliary technologies such as flexible HTS current leads and cryogenic power supplies. We will present an overview of these technologies, and their potential for commercial aerospace applications.

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Sriharsha is currently working as a HTS Magnet Engineer at Tokamak Energy, UK. As a part of the advanced technology applications (ATA) team, Sriharsha is  keen on solving the engineering problems outside the fusion domain by actively collaborating and maturing the HTS magnet technology in the process. Before joining TE, Sriharsha was previously working on developing the cryogen free HTS current sources at Robinson Research Institute (RRI), NZ as a postdoctoral fellow. Sriharsha  got 7+ years of working within the applied superconductivity area, with both experimental and modelling expertise using HTS material for electric aircraft, magnets and flux pumps.

Ali Khonya

Karlsruhe Institute of Technology (KIT)

Modelling of Electric Aircraft Superconducting Powertrain

This presentation intends to explain the superconducting propulsion system modeling of the electric aircraft. Since there are multiple components in such a powertrain, each of them is modeled in the standalone mode. These components include fault current limiter, HTS cables, converter, motor, etc.. In the presentation, some analysis related to modeling of the superconducting fault current limiter and the HTS cables are shown. Furthermore, the simulation results of these components with MATLAB/Simulink are discussed. 

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  • Bachelor’s Degree in Electrical Engineering from University of Tehran, Iran
  • Master’s Degree in Electrical Engineering – Smart Grids from Politecnico di Milano, Italy
  • Research and Development Engineering Intern/Master’s Thesis at SuperGrid Institute, France
  • (Current Position) Ph.D. Candidate at Institute for Technical Physics (ITEP) at Karlsruhe Institute of Technology (KIT), Germany

Rodney A Badcock

Paihau – Robinson Research Institute, Victoria University of Wellington

Superconducting Aerospace Propulsion: Reducing Implementation Timeframes

New Zealand has long been recognised as a global leader in renewable energy integration and holding deep expertise in commercial application of superconducting technology. The New Zealand government has put in place a strategy that mirrors this; to be net carbon-zero by 2050 and invested in cooperative technology development programmes that will accelerate international development. 

Transportation is the largest source of non-agricultural greenhouse gas emissions from the country – domestic aviation accounts for 10% of our emissions and long-haul travel maybe more. We depend on aviation, our exports depend on shipping, and our internal freight relies on trucks. We will use electrical energy to reduce our carbon footprint. The good news is that New Zealand is unique in its electricity production – over 80% of our electrical energy is generated from renewable sources, and we have plenty of scope to increase it to 100% using wind, solar, and geothermal.

Electrification of aviation propulsion has the highest potential of drastically reducing emissions in New Zealand. Our domestic (Sounds Air) and international (Air New Zealand) are both committed to passenger electric flight introduction. The NZ government are supporting this and making the regulatory framework available to act as an international test-bed. 

The real challenge is for larger transport aircraft with more than 100 seats; conventional technology cannot provide the power-to-weight required to electrify at this scale. Superconducting, and cryogenic, machines may provide a solution: they are small and light, relative to their power output. New Zealand has been working on superconductors since the 1980s and researchers in this field have recently teamed up with NZ’s leading researchers in power electronics and cryogenics systems, and formed strategic international research partnerships.

We will present an overview of the multidisciplinary research in this NZ national programme towards electric flight realization. We will examine the technology integration within superconducting machines for aircraft using novel technology such as flux pump exciters, low ac-loss windings, wide bandgap electronics and integrated cryogenic systems. We will present an overview of the technology development, implications and how this research is globally relevant.

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Professor Rodney A. Badcock  was born in Cambridge, U.K., in 1969. He received the B.Sc. degree in physics with electronics from the University of Leeds, Leeds, U.K., and the M.Sc. and Ph.D. degrees in manufacturing and materials engineering from Brunel University, England, U.K.

He has 30 years research experience in applied R&D covering manufacturing process monitoring and control, materials sensing, and superconducting systems. Since 2006, he has concentrated on superconducting machines, and production and machines for General Cable Superconductors at the Robinson Research Institute, Victoria University of Wellington, Lower Hutt, New Zealand. He is currently the Institute Deputy Director, Chief Engineer, Professor and specializes in the management of complex engineering projects, including customer-focused multidisciplinary programmes. He is particularly known for the development of the superconducting dynamos for electric machines and the NZ MBIE programme developing aircraft superconducting electric propulsion technology. Rod is recognized as one of the leading experts in the application of superconducting dynamos and cables to electric machines and translating high temperature superconductivity into commercial practice.

Dr. Badcock was a key member of the team awarded the Royal Society of New Zealand Cooper Medal in 2008 for the development of high-temperature superconducting cables for power system applications including 1 MVA transformer, 60 MW hydro generator, and 150 MW utility generator.

Min Zhang

University of Strathclyde, Applied Superconductivity Laboratory

200 kW Cryogenic Propulsion Unit Development Progress

The Applied Superconductivity Laboratory at the University of Strathclyde is developing a 200 kW cryogenic propulsion unit under the support of UK Aerospace Technology Institute Zero Emission Sustainable Transport Program. This presentation presents the development progress so far, which includes the development of multi-filament HTS windings for AC loss mitigation, the development of a hybrid trapped field magnet and the cryogenic testing of power electronic devices, in collaboration with Airbus

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Prof Min Zhang is the first and the only female professor in the Department of Electronic and Electrical Engineering of Strathclyde. She directs the Applied Superconductivity Laboratory.

Ziad Melhem

Oxford Quantum Solutions Ltd

Superconducting Technologies for Cleaner and Sustainable Future

Superconducting technologies are ready to be scaled up and deployed in diverse applications beyond their present usage (MRI, NMR, and physical sciences and engineering). Superconductivity has the potential to provide means towards zero-emission targets, enabling extensive usage of wind power generation, facilitating zero-emission transportation, realising robust and resilient electricity, enabling fusion power, superconducting quantum computing, water purification, new medical diagnosis and therapy tools, and new scientific breakthroughs.

To realise the potential of superconductors in addressing our societal future needs as identified in the United Nations’ 17 Sustainable Development Goals (SDGs, also called the Global Goals; will require new thinking and innovations on how to deploy superconducting technologies and translate it into successful market applications.

This talk will present an update on achievements in superconducting applications and introduce a new initiative on superconductivity for a cleaner and sustainable future and address the global targets for decarbonation.

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Dr Ziad Melhem is the Founder and CEO of Oxford Quantum Solutions Ltd (OQS). And since Jan 2022 a Non-Executive Director at Intelliconnect (Europe) Ltd. OQS is an independent Consultancy business launched in Feb 2021 focusing on Innovations and Advanced Solutions, Strategic Business Development, Strategic Road mapping and Technical Authority on Superconducting, Cryogenics, Instrumentation in Quantum and Nanotechnology applications for Quantum, Energy, Life Sciences, Physical Sciences, Transport and Power Applications. Before retiring from Oxford Instruments NanoScience (OINS), Ziad as the Strategic Business Development Manager managed OINS Strategic Business Development activities, Alliances and collaborative R&D projects on quantum, nanoscience, and nanotechnology applications.

Ziad has over 32 years’ experience on product, alliances and business development activities in applied superconductivity, Low and High temperature superconducting (LTS & HTS) materials, cryogenic, quantum and nanotechnology applications for scientific, medical, energy and industrial sectors.

Ziad is active at national and international level and member of a variety of international and national committees and organizations and Advisory Board for different projects and initiatives on superconducting, quantum and cryogenic applications. Ziad is a Senior Member of the IEEE and a member of Institute of Physics (IOP). Ziad is a member of the Institute of Physics (IOP) Superconductivity committee and Secretary of the British Cryogenic Council (BCC). Member of the international organizing committee for MT conferences (Since 2017)) and member of the organizing committee for the ICEC (Sep 2018) Oxford, member of the organizing committee of the Oxford University Quantum Hub event on Cryogenic Electronics (Oct 2020). Currently chairing the FuSuMaTech European initiative on Superconducting Magnet Technology.

Lukas Graber

Georgia Institute of Technology, Plasma and Dielectrics Laboratory

Investigating the Building Blocks for Cryogenic Power Electronic Devices

Future cryogenic power electronic devices could reduce the heat leak from ambient temperature to the cryogenic power system of electric aircraft. This talk focuses on the building blocks for future cryogenic power electronic devices, including silicon, silicon carbide, and gallium nitride semiconductors, as well as capacitors, magnetic core materials, and magnet wire types. Measurements will be presented to show the opportunities and limits of operating existing devices at cryogenic temperature. Research gaps and risks factors will be identified and recommendations will be provided.

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Lukas Graber received the Diploma and doctorate degrees in electrical engineering from ETH Zurich, in 2002 and 2009, respectively. He is currently an Associate Professor in the School of Electrical and Computer Engineering at Georgia Institute of Technology, Atlanta, USA. Before he joined Georgia Tech, in 2015, he was with the Center for Advanced Power Systems, Florida State University. His research interests include superconducting power cables and fault current limiters, cryogenic power electronics, supercritical dielectric materials, ultrafast mechanical switchgear, short-circuit forces in substations, and grounding aspects of power distribution on future all-electric ships and aircraft. He serves on the Board of Directors for CSA, an Editor for select issues of the IEEE Transactions on Applied Superconductivity, and contributes to standard committees, taskforces, as well as study committees within IEEE and CIGRE.

Remi Dorget

Safran

Superconducting Flux Modulation Machines for Hybrid and Electric Aircraft

The reduction of greenhouse gas emissions of the aviation industry represents an important challenge. Indeed, both the electrification and the deployment of liquid hydrogen (LH2) as main fuel within aircrafts would involve considerable change in their architectures. Besides, enabling electrical propulsion requires electrical components with high efficiency and specific power. This requirement could be fulfilled by the use of high temperature superconductors (HTS), which present a strong synergy with the cryogenic cooling potential of LH2. In this context, much works is undertaken by Safran Tech with industrial and academic partners to develop superconducting electrical machines for aircraft propulsion. Most notability, the flux modulation topology concentrate much of the effort as several projects and prototypes are currently being designed, built or tested. Indeed, a first 50 kW prototype has been realised in 2019 using first generation of HTS wire is currently being tested at the University of Lorraine. A second demonstrator, using the second generation of HTS wires as well as several additional improvements is currently under construction and aim to reach 200 kW with a mass similar to the first prototype. These two projects are concerning partially superconducting machines as the inductor only is superconducting whereas the armature is conventional. A third related project thus aim to develop a cryocooled copper armature to improve the 50 kW prototype. In this presentation, the state of progress of the various projects related to superconductivity at Safran is outlined. Then, based on the lessons learned from these results, theoretical studies on the potential of superconducting machines for electrical aircraft propulsion are presented.

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Rémi Dorget received his M.Sc. degree in electrical engineering in 2019 from the University of Lorraine in France. He then studied the manufacturing of high temperature superconductors at the Shibaura Institute of Technology in Japan. Since December 2019, he has been working for Safran and the GREEN laboratory as a PhD candidate working on the design, realisation and testing of superconducting flux modulation machines for aeronautical applications.

Danko van der Laan

Advanced Conductor Technologies LLC

Development of High-Temperature Superconducting CORC® Power Cables for Use on Electric Aircraft

Electric power systems on future twin aisle electric aircraft require high-temperature superconducting (HTS) dc cables capable of delivering up to 50 MW of power. Conductor on Round Core (CORC®) power cables under development at Advanced Conductor Technologies (ACT) could provide such power when combining high operating currents in the order of 5 kA with an operating voltage of 10 kV. An overview of the development of CORC® dc power cables with fault current limiting capabilities for shipboard and electric aircraft applications is provided. High current operation of a 10-meter long 2-pole CORC® dc power cable, cooled with helium gas, clearly shows the benefits of operation at reduced temperatures of 20 – 60 K, which is a temperature window that may be easily accessible in the presence of liquid hydrogen fuel. Continuous operation of a helium gas cooled CORC® cable with compact terminations containing current leads to room temperature with integrated helium gas heat exchangers will also be outlined. A major challenge in development of high power CORC® cables is to provide them with a voltage rating as high as 12 kV when cooled with helium gas. The latest results of CORC® cable dielectrics development will be highlighted. Integration and safe operation of high-current superconducting cables in electric aircraft is a major challenge, especially when considering potential operation at relatively high voltage and as fault current limiter. We will highlight some of these challenges and discuss how they need to be addressed on a system level.

Timothy J. Haugan

U.S. Air Force Research Laboratory

Design and Scaling of a 40-MW-class Electric-Wire-Interconnect-System (EWIS) for Liquid-H2 Fuel-Cell Propulsion

The aerospace industry is the last major transportation industry working to transition to hybrid-electric technology for propulsion.  Nearly exponential growth is occurring recently for electric aircraft development, with reportedly more than 300 companies started worldwide in the last 2-3 years.  In 2021, pre-orders for electric aircraft exceeded 3,500 aircraft and $13B sales, even though many aircraft have not been certified for flight yet.  The goals for electric drivetrain components are difficult and aggressive, as set by ARPA-E ASCEND to achieve ~ 93% efficiency at the system level and > 12 kW/kg for the electric motor drive combined with a thermal-management-system (TMS).  And for the NASA SUSAN program the goals for major components are to simultaneously achieve ≥ 99.5% efficiency and power densities of 30-50 kW/kg for the major components, and ~ ≥ 95% efficiency for the system.  Strong efforts worldwide are considering different technology approaches; however, it is generally understood that cryogenic/superconducting technologies have potential to meet those goals. 

 The electric-wire-interconnection-system (EWIS) of an electric drivetrain is known to have by-far the largest mass fraction of all the components. This paper studies the EWIS of a 40-MW-class electric drivetrain, and compares different wire technologies including cryogenic metals, superconductors, and ‘conventional’ metals at ambient temperatures. The mass and heat loss scaling laws of the components of the electric drivetrain are required for varying power/voltage /ampacity levels (0-40 kA) and power-wire distribution architectures, which is a focus of this work.  Electric power system components studied thus far include metal conductors (Cu-clad-Al (CCA), Al 99.999% ‘hyperconductor’), busbars, current leads, metal/superconducting T-joints, high temperature superconducting (HTS) Y,RE-Ba-Cu-O and metal-based cables, and cryoflex tubing.  A weight and efficiency analysis of a 40 MW power drivetrain system will be provided, and material options for the EWIS will be compared.  

Acknowledgments. This research was funded by the NASA University Learning Initiative (ULI) #80NSSC19M0125, AFOSR LRIR #18RQCOR100, and the Air Force Research Laboratory/Aerospace Systems Directorate.   

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Dr. Timothy Haugan is a Sr. Research Physicist, Team Leader, and Program Manager at the U.S. Air-Force-Research-Laboratory (AFRL), Aerospace-Systems-Directorate (AFRL/RQ).  He has worked in the field of superconductivity/cryogenics for 33 years, including 22 years at AFRL.  He is co-author of 160+ papers with > 3,600 citations and h-index = 29 and i10 index = 69 (Google Scholar only), and co-author of > 600 presentations including >150 invited and 4 US patents.  He is a Fellow of American-Ceramic-Society (ACerS), and his received multiple awards from the USAF, including the AFOSR-Laboratory-Star-Team Award a record seven-times, and the 2009 USAF-Outstanding-Scientist-of-the-Year-Mid-Career-Civilian.  Present research interests are materials and device technologies for MW-class power systems, for applications in aircraft electric propulsion, hypersonics, and directed energy.  A special focus is for superconductivity/cryogenics materials and devices development. 

Xiaoze Pei

University of Bath

Electric Aircraft Superconducting DC Network Fault Protection

Electrification of aviation will play a key role in delivering emission and noise reduction targets for sustainable aviation. Airbus UpNext initiated the Advanced Superconducting and Cryogenic Experimental powertraiN Demonstrator. A reliable high-power density and high efficiency superconducting DC distribution network will be a key enabling and transformative technology to achieve large-scale hydrogen-powered electric aircraft. Safety and reliability are the primary requirements for electric propulsion aircraft. This talk will focus on the fault protection of cryogenic and superconducting DC distribution network using a superconducting fault current limiter and a cryogenic hybrid DC circuit breaker. A prototype has been built and experimentally tested in the laboratory, which successfully interrupts kA current within 5 milliseconds. The project is under the support of UK Aerospace Technology Institute and in collaboration with Airbus.

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Dr Xiaoze Pei is leading the Applied Superconductivity Laboratory at University of Bath. Dr Pei received her PhD from University of Manchester in 2012. She joined University of Bath in 2017 and became a Reader (Associate Professor) in 2022. She has extensive experience in designing and testing of resistive superconducting fault current limiters and fast operating hybrid DC circuit breakers.

Dr Pei serves as secretary for IEEE Power Electronics Society Technical Committee TC10: Design Methodologies. She is a UK Magnetics Society committee member and CIGRE joint working group member for B4/A3.86 - Faut Current Limiting Technologies for DC Grids.

Tiziana Spina

ASG Superconductors

MgB2 Superconducting Wires for Electric Aircraft: Advantages and Future Perspectives

Among the realm of practical superconductors, MgB2 is the most lightweight superconductor that can be produced in long length and multifilamentary configuration suitable for several applications. One of the major advantages of MgB2 resides in the low cryogenic cost and the reduced overall size of devices thanks to the use of liquid hydrogen (i.e. MrOpen – the open MRI machine developed at ASG). Recently, ASG superconductors has started a campaign in collaborations with universities, in order to minimize AC losses in ordinary PIT ex-situ industrial MgB2 wires. Such development will open the scenario in the near future to the most common AC applications as electric motors for aircraft. In this presentation, the current status-of-the-art will be presented, and the major advantages and perspectives discussed.

Mike Tomsic

Hyper Tech

The Benefit of Using Cryo-Fuels for Thermal Management of Superconducting and Aluminum Conductors in Motors, Generators and Cables for Electric Aircraft

This talk will discuss the present and future of MgB2 superconductors for stators and rotors.  There will also be the discussion of cryo-aluminum and ReBCO superconductors. We will discuss the AC loss in relationship to frequency of various applications.  We will discuss  the potential for increased power density and efficiency, the closer the conductors can operate at liquid hydrogen temperatures (20K).

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Mr. Mike Tomsic is President and Founder of Hyper Tech Research Inc. He has been in the superconductor industry over 30 years.  His company over the years as worked on the development of almost every practical superconductor NbTi, Nb3Sn, BSCCO, MgB2, ReBCO, NbAl, Fe based, etc.  His company has commercialized and sells MgB2 and Nb3Sn superconductors. His company also manufacturers’ and sells superconducting coils, and he has worked on many superconducting applications, such as MRI, FCL, Magnetic Separation, SMES, wind turbine generators, and now high- power density electric aircraft motors both superconducting and non-superconducting.

Jonathan Gladin

Georgia Institute of Technology

Hydrogen Fueled Electric Aircraft for Sustainable Aviation: Concepts and Challenges

Hydrogen is being considered as a potential sustainable aviation fuel of the future.  There are many types of concepts being considered, some employing electric aircraft technologies, and some which do not.  This presentation will provide a brief overview of various hydrogen aircraft concepts, and briefly cover significant challenges posed by these systems.  Potential synergies with electrification, superconductivity, and advanced aircraft concepts will be discussed with key challenges identified.   Finally, the state of hydrogen aircraft concept research within the United States will be discussed, with a focus on recent NASA funded activities with academia and novel ideas being proposed.

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Dr. Jonathan Gladin is a Senior Research Engineer at the Aerospace Systems Design Lab at the Georgia Institute of Technology. He received a B.S., M.S., and Ph.D degree in Aerospace Engineering from Georgia Tech.  He has worked as a research engineer at ASDL since 2015 and is the division chief for the propulsion and energy group.  His work is heavily focused in the area of advanced propulsion systems design and analysis, with a focus on advanced cycles, electrified aircraft, propulsion airframe integration, zero emissions aircraft, and sustainable aviation. He has been involved with many NASA funded projects related to the conceptual design of various advanced concepts including two recently funded university initiatives to research zero emission aircraft concepts.

Emelie Nilsson

Airbus UpNext

Superconducting AC and DC Distribution with Fault Current Limiting Performance of the 500 kW Advanced Superconducting and Cryogenic Experimental Power Train Demonstrator

With ASCEND (Advanced Superconducting and Cryogenic Experimental power train Demonstrator) Airbus UpNext intends to demonstrate the potential and feasibility of a cryogenic and superconducting powertrain to breakthrough aircraft electric propulsion performances.  DC power of 500 kW can be transferred in a compact cryostat over 10-m to an electrical converter, which transforms this energy into an alternating voltage/current to drive a superconducting motor. AC power is delivered to an electric motor over a 2-m superconducting link. 

In this presentation we focus on the design challenges of the superconducting DC link, which consists of a two pole twisted Conductor on Round Core (CORC®) HTS cables and optimized current leads through which current is injected from the room temperature into the liquid nitrogen cooled superconducting cables. The CORC® cables of the DC bus are designed to have fault current limiting (FCL) abilities to protect the powertrain in the event of overcurrent. We present the preliminary results of the prototype DC cable both during nominal operating conditions, as well as in fault conditions when the superconducting cable performs like a FCL. The electric and thermal response of the cable during and after a fault is evaluated through overcurrent measurements as well as numerical modeling.

Regarding the superconducting AC link, which links the motor control unit to a superconducting motor, the challenge of AC losses at 500 Hz is addressed. First results of modeling and preliminary tests are highlighted.

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Emelie Nilsson is currently working as a research engineer in superconducting DC and AC distribution for the ASCEND project at Airbus UpNext. She has 10+ years experience in research projects based on superconducting technologies. She obtained her PhD in plasma physics from Ecole Polytechnique Paris in 2015. Her thesis, carried out at CEA-Cadarache, focused on research on runaway electron dynamics in tokamak plasma. She was also awarded a licentiate degree from Chalmers University of Technology in 2014, on the topic of current drive using lower hybrid waves in tokamak plasma. After she joined CERN’s Technology department for a postdoctoral COFUND fellowship working on design and development of Nb3Sn superconducting accelerator magnets for the High Luminosity upgrade of the LHC. In this framework she carried out a 4 month research visit at Lawrence Berkeley National Laboratory. Since 2018 she worked as an accelerator scientist at the European Spallation Source, currently under construction, until she joined Airbus UpNext in 2021.

Alexandre Colle

Airbus UpNext

Design of Partial Superconducting Motor: Last Brick of a Superconducting and Cryogenic Powertrain

Cryogenic and superconducting powertrains are investigated seriously for the future electrical aircraft. In a possible scenario of fully electric aircraft, hydrogen is stored in the aircraft in its liquid form and then used to produce electrical energy. The ASCEND project aims to demonstrate the potential and the feasibility of this technology. A ground demonstrator will be manufactured and tested. 

This presentation will present the potential performances of partial superconducting motors on the ASCEND project scale (few hundred of kW) to aircraft application (few MW). This work will also point to the parameters that influence the losses in superconducting tapes used for a stator winding in electrical motors.

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Emelie obtained his masters degree in electrical engineering at the University of Lorraine. He completed his PhD study with the same university and Safran Tech on the manufacture and test of a superconducting generator for aircraft application. He spent a year as a post-doc at the University of Kyoto to work on superconducting and conventional electrical motors before finally joining the ASCEND project held by Airbus UpNext to work on a superconducting and cryogenic powertrain.