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Design Optimization Studies of Partially Superconducting Machines based on NASA’s High Efficiency Megawatt MotorSingle aisle class electric aircraft require high power density and efficiency megawatt electric machines to be competitive with their tradition turbofan counterparts. Superconducting machines are seen as a key enabling technology for achieving the electric motor power density and efficiency needed by single aisle class electric aircraft. NASA’s High Efficiency Megawatt Motor (HEMM) is a partially superconducting machine being developed at NASA Glenn Research Center as a technology demonstration of a practical near-term superconducting machine. HEMM is being developed to meet the requirements of the generators on NASA’s STARC-ABL reference aircraft. HEMM is expected to achieve greater than 16 kW/kg electromagnetic specific power and greater than 98% efficiency at a nominal operating condition of 1.4 MW and 6800 RPM. In this paper, a design optimization algorithm for partially superconducting machines based on HEMM’s technologies is used to explore the possible performance of HEMM technology at other machine power levels and operating conditions. The design optimization algorithm is detailed in full and results for achievable geared and direct drive machine performance are presented.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Thomas F Tallerico
(Glenn Research Center Cleveland, Ohio, United States)
Aaron D Anderson
(Glenn Research Center Cleveland, Ohio, United States)
Justin J Scheidler
(Glenn Research Center Cleveland, Ohio, United States)
Date Acquired
June 28, 2021
Subject Category
Aircraft Propulsion And Power
Meeting Information
Meeting: AIAA/IEEE Electric Aircraft Technologies Symposium (EATS)
Location: Virtual
Country: US
Start Date: August 11, 2021
End Date: August 13, 2021
Sponsors: Institute of Electrical and Electronics Engineers, American Institute of Aeronautics and Astronautics
Funding Number(s)
WBS: 081876.
Distribution Limits
Work of the US Gov. Public Use Permitted.
Technical Review
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