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Dynamic Analysis of the STARC-ABL Propulsion SystemIn the pursuit of Electrified Aircraft Propulsion (EAP), much of the attention is on the development of hybrid electric concept vehicles and their propulsion systems from a steady state performance perspective. While it is steady-state performance that largely determines the efficiency of civil air transports, engine operability and transient performance define constraints for the steady state design that impact efficiency and system viability. Neglecting dynamics and control technologies can result in an over-designed, sub optimal propulsion system or a concept that is not feasible. Thus, dynamic system studies were conducted on the propulsion system of the conceptual aircraft design known as the Single-aisle Turboelectric AiRCraft with Aft Boundary Layer propulsor (STARC-ABL). This paper describes the development of a controller to verify the baseline concept's feasibility from an operability perspective. Further, studies were conducted to identify excessive stability margin in the baseline design that could be traded for potential benefits in efficiency through an engine re design. This study revealed the potential to reduce the high pressure compressor (HPC) stall margin by 3%. Finally, a study was conducted to investigate the potential benefit of adding energy storage to the STARC-ABL concept that further improves operability and enables more gains in engine efficiency and performance. The energy storage provided an additional 0.5% stall margin can be removed from the HPC.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Kratz, Jonathan L.
(NASA Glenn Research Center Cleveland, OH, United States)
Thomas, George L.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
September 4, 2019
Publication Date
August 21, 2019
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
Meeting Information
Meeting: AIAA Propulsion and Energy Forum
Location: Indianapolis, IN
Country: United States
Start Date: August 19, 2019
End Date: August 22, 2019
Sponsors: American Institute of Aeronautics and Astronautics (AIAA)
Funding Number(s)
WBS: 081876.
Distribution Limits
Work of the US Gov. Public Use Permitted.
Technical Review
Professional Review
dynamic systems analysis
hybrid electric propulsion
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