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Specific Power and Efficiency Projections of Electric Machines and Circuit Protection Exploration for Aircraft ApplicationsThe purpose of this paper is to generate specific power and efficiency projections through the year 2050 for electric machines for aircraft applications. A general literature review was performed to identify the types of electric machines that are commonly used and which types have the biggest potential for future aircraft applications due to their high specific power and efficiency. A database with historical data was built to include parameters such as weight [kg], rated power [kW], specific power [kW/kg], RPM, efficiency, year, motor cooling type, application type and motor type to allow for trend identification and accurate projections. Once the data was gathered, multiple curve fits on the historical data were generated and extrapolated to produce the projections for specific power according to conservative, nominal and aggressive projection scenarios. A different process was followed for the efficiency projections due to the scattered nature of the data. A state of the art (SoA) value for efficiency was identified through literature review and was used to create the conservative, nominal and aggressive projections for the time frames of 2030, 2040, and 2050. The efficiency and the specific power projections of EMs for 2050 are 0.989 and 50kW/kg respectively. This paper will also be examining circuit protection as it is an additional component of electric powertrains.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Chrysoula L Pastra
(Georgia Institute of Technology Atlanta, Georgia, United States)
Christopher Hall
(Georgia Institute of Technology Atlanta, Georgia, United States)
Gokcin Cinar
(Georgia Institute of Technology Atlanta, Georgia, United States)
Jonathan Gladin
(Georgia Institute of Technology Atlanta, Georgia, United States)
Dimitrios N Mavris
(Georgia Institute of Technology Atlanta, Georgia, United States)
Date Acquired
March 28, 2023
Publication Date
June 15, 2022
Subject Category
Aircraft Propulsion and Power
Meeting Information
Meeting: 2022 IEEE/AIAA Transportation Electrification Conference and Electric Aircraft Technologies Symposium
Location: Anaheim, CA
Country: US
Start Date: June 15, 2022
End Date: June 17, 2022
Sponsors: American Institute of Aeronautics and Astronautics, Institute of Electrical and Electronics Engineers
Funding Number(s)
WBS: 770848.
Distribution Limits
Public Use Permitted.
Technical Review
Single Expert
electric machines
electric powertrain
electrified aircraft propulsion
electrified powertrain flight demonstration
electric propulsion
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