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Modeling and Control Design for a Turboelectric Single Aisle Aircraft Propulsion SystemA nonlinear dynamic model with full flight envelope controller is developed for the propulsion system of a partially turboelectric single-aisle aircraft. The propulsion system model consists of two turbofan engines with a large percentage of power extraction, feeding an electric tail fan for boundary layer ingestion. The dynamic model is compared against an existing steady state design model. An electrical system model using a simple power flow approach is integrated into existing modeling tools used for dynamic simulation of the turbomachinery of the vehicle. In addition to the simple power flow model of the electrical system, a more detailed model is used for comparison at a key vehicle transient flight condition. The controller is a gain scheduled proportional-integral type that is examined throughout the flight envelope for performance metrics such as rise time and operability margins. Potential improvements in efficiency for the vehicle are explored by adjusting the power split between the energy used for thrust by the turbofans and that extracted to supply power to the tail fan. Finally, an operability study of the vehicle is conducted using a 900 nautical mile mission profile for a nominal vehicle configuration, a deteriorated propulsion system at the end of its operating life, and an optimized power schedule with improved efficiency.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
External Source(s)
Connolly, Joseph W.
(NASA Glenn Research Center Cleveland, OH, United States)
Chapman, Jeffryes W.
(NASA Glenn Research Center Cleveland, OH, United States)
Stalcup, Erik J.
(NASA Glenn Research Center Cleveland, OH, United States)
Hunker, Keith R.
(NASA Glenn Research Center Cleveland, OH, United States)
Chicatelli, Amy K.
(Vantage Partners, LLC Brook Park, OH, United States)
Thomas, George L.
(Vantage Partners, LLC Brook Park, OH, United States)
Date Acquired
September 21, 2018
Publication Date
July 9, 2018
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
Meeting Information
Meeting: AIAA Propulsion and Energy - IEEE Electric Aircraft Technologies Symposium
Location: Cincinnati, OH
Country: United States
Start Date: July 9, 2018
End Date: July 11, 2018
Sponsors: American Inst. of Aeronautics and Astronautics, Institute of Electrical and Electronics Engineers
Funding Number(s)
WBS: WBS 081876.
Distribution Limits
Public Use Permitted.
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