25–29 June 2018
Hyatt Regency Atlanta, Atlanta, Georgia

Design of Electric and Hybrid-Electric Aircraft

23-24 June 2018
0800-1700 hrs

Synopsis

In this course, participants learn about current development in electric and hybrid electric aircraft. Participants will learn how to design electric and hybrid electric aircraft starting from the top-level aircraft requirements. Design examples will include an electric air taxi and a hybrid-electric aircraft with distributed propulsion. Various powertrains will be examined including pure electric, parallel hybrid, serial hybrid, and combinations. It will be demonstrated which design variables are unique to electric and hybrid electric aircraft and how the sizing process of the powertrain components can be carried out.

Learning Objectives

  • Identify types of electric aircraft and current projects
  • Perform the preliminary sizing process of an electric or hybrid electric aircraft based on top-level aircraft requirements
  • Perform off-design mission performance analysis of sized electric and hybrid electric aircraft, with appropriate considerations of reserve requirements and battery life and safety margins
  • Perform trade studies on the fans, wing, and powertrain design variables to achieve a predefined design goal
  • Include aero-propulsive interaction effects into the preliminary sizing process by using results from experimental or numerical simulations

Who Should Attend

This course intended for engineers with a background in aerospace engineering that are interested in learning about the unique design considerations for electric and hybrid electric aircraft.

Course Instructors

Brian German is the Langley Associate Professor in the School of Aerospace Engineering at Georgia Tech and the National Institute of Aerospace. His research involves aircraft electric propulsion and autonomous flight and the emerging aviation markets that these technologies enable. He specializes in configuration design of electric aircraft, aerodynamics of distributed propulsion, battery and hybrid propulsion modeling, operations research problems for innovative scheduled and on-demand air services, and aircraft operational economics modeling. Much of his work focuses on new types of electric regional aircraft and e-VTOL aircraft for urban air mobility. Prof. German is a founding member and former Chair of the AIAA Transformational Flight Program Committee (2014-2016), which was chartered to explore the opportunities of emerging aircraft electric propulsion and autonomy technologies, and he is a member of the AIAA Aircraft Electric Propulsion and Power Working Group. He received his BS, MS, and Ph.D. degrees in Aerospace Engineering from Georgia Tech. Prof. German was a Fulbright student scholar at TU Berlin and an NDSEG Graduate Research Fellow, and he received the NSF CAREER award in 2012. He is an Associate Fellow of AIAA.

Dr. Marty Bradley is a Technical Fellow for The Boeing Company, working in the Boeing Commercial Airplanes Advanced Concepts Group in Long Beach, California. He is the leader for a variety of projects related to advanced concepts and technologies, electric and hybrid electric aircraft, and propulsion integration for advanced technologies. Marty has 33-years of experience in vehicle design, propulsion integration, and technology studies for a wide variety of commercial and military aerospace applications. Marty was the Principal Investigator for the NASA funded SUGAR study looking at advanced technologies for future commercial aircraft, including the hybrid electric SUGAR Volt, and contributed to the National Academies report on Low Carbon Aviation. He is the Leader of the AIAA Aircraft Electric Propulsion and Power Working Group. He previously was Chair of the AIAA Green Engineering Program Committee and the High Speed Airbreathing Propulsion Technical Committee. Marty has a B.S., M.S., and Ph.D. in Aerospace Engineering, all from the University of Southern California.

Roelof Vos is an Assistant Professor at the Aerospace Engineering Faculty of Delft University of Technology. He holds a BSc degree in Aerospace Engineering from Delft University of Technology which he received in 2004. He earned an MSc degree from that same university which he received with honors in 2005. Sponsored by a VSBfonds scholarship, he subsequently worked for 6 months as a post-graduate researcher at The University of Manchester. In 2006 Vos received a Fulbright Scholarship to pursue a PhD degree at The University of Kansas. His research was acknowledged with the AIAA Abe Zarem Award in 2008. Vos obtained his PhD degree in 2009. Since then, Vos has been working as Assistant Professor at the Aerospace Engineering Faculty of Delft University of Technology. He teaches courses on aircraft design, aerodynamic design of transport aircraft, and aerodynamic design of combat aircraft. His research focuses on the development of aircraft analysis methodologies for the conceptual design phase, the design of new aircraft configurations, and the assessment of emerging aviation technologies. He is author of the textbook " Introduction to Transonic Aerodynamics." Furthermore, he has published 12 articles in peer-reviewed journals and over 30 conference papers. He has worked on various projects funded by the European Commission. He is a senior member of AIAA and a member of the AIAA Aircraft Design Technical committee.

Dr. Rob McDonald is the Aircraft Design Lead for Uber's Elevate project. He has been researching, teaching, and consulting in electric aircraft design since 2010. Before joining Uber, he taught and researched Aircraft Design, Aircraft Performance, and Multidisciplinary Design Optimization at Cal Poly, San Luis Obispo for 10+ years. He spent 2011 as a member of the technical staff in the Aeronautics Systems Analysis Branch (ASAB) at NASA Langley. He is the primary developer of OpenVSP. Rob has been a member of the AIAA Aircraft Design Technical Committee since 2008, and is a founding member of the AIAA Transformational Flight Program Committee. Rob is a Senior Member in AIAA. Rob has a B.S. from the Missouri University of Science & Technology and a M.S. and Ph.D. from Georgia Institute of Technology - all in Aerospace Engineering.

Course Outline

    1. Introduction
    • Thin Haul, Commuter, Regional, and Airliners
    • Summary of recent aircraft projects, Taxonomy of Propulsion and Power architectures, Component performance requirements to enable different types of aircraft
    • On Demand Mobility & Air Taxi
    2. Propulsion
    • Taxonomy of Power train architectures
    • Propulsion efficiency chains & examples
    • Aero-propulsive interaction, Distributed Propulsion, Wing Interactions
    3. Components and Modeling
    • Batteries
    • Electric motors & generators, Controllers, Inverters, Rectifiers, and Power distribution, Propellers and gearboxes
    4. Electric Aircraft Sizing and Operational Performance
    • Mission requirements based on actual operations of short ranged aircraft: an opportunity for electric propulsion
    • Point performance requirements to determine power and wing loading
    • Motor and propeller/rotor matching
    • Concept sketch and drag buildup (with OpenVSP/VSPAERO demo example)
    • Weights buildup and conceptual weight sizing approach
    • Range performance based on battery discharge modeling
    • Off-design mission performance
    • Optimal aircraft flight speeds for ODM or scheduled operations considering recharge between flights
    5. Hybrid Electric Aircraft Design Process
    • Aircraft design process: from conceptual to detailed design
    • Design requirements including airworthiness regulations
    • Lift and drag decomposition including propulsive effects
    • Derivation of the equilibrium equations
    • Constructing the performance constraints diagram
    • Hybrid-electric powertrain modelling (with link to previous bullet)
    • Component sizing conditions: failure modes
    • Sizing batteries and fuel tank for total energy requirements
    • Demonstration of sizing process through examples of hybrid-electric, distributed propulsion aircraft.

    Course Materials

    Course notes will be made available about one week prior to the course event. You will receive an email with detailed instructions on how to access your course notes. Since course notes will not be distributed on site, AIAA and your course instructor highly recommend that you bring your computer with the course notes already downloaded to the course.

    Course Registration

    Pricing and registration information can be found here.

    AIAA CEUs are available for this course.

    Contact

    Please contact Jason Cole if you have any questions about courses and workshops at AIAA forums.

Dates to Remember

  • Manuscript Deadline: 16 May 2018
  • Early Mem Reg Deadline: 04 Jun 2018
  • Cancellation Deadline: 11 Jun 2018

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