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Volume 133
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10.3390/engproc2026133181
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Proceeding Paper

The Challenges in Extending Engine Performance Modeling for Highly Integrated Transport Aircraft †

by
Yiwen Yuan
1,*,
Niraj Iyer
2,
Stephan Staudacher
1 and
Jens Friedrichs
2
1
Institute of Aircraft Propulsion Systems, University of Stuttgart, Pfaffenwaldring 6, 70569 Stuttgart, Germany
2
Institute of Jet Propulsion and Turbomachinery, TU Braunschweig, Hermann-Blenk-Straße 37, 38108 Braunschweig, Germany
*
Author to whom correspondence should be addressed.
†
Presented at the 15th EASN International Conference, Madrid, Spain, 14–17 October 2025.
Eng. Proc. 2026, 133(1), 181; https://doi.org/10.3390/engproc2026133181
Published: 28 May 2026
(This article belongs to the Proceedings of The 15th EASN International Conference on “Innovation in Aviation & Space Towards Sustainability Today & Tomorrow”)
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Abstract

The utilization of boundary layer ingestion in combination with a turbofan engine with an ultra-high bypass ratio is regarded as one of the possible solutions to increase the energy efficiency of the aircraft as a complete system. However, this concept inevitably leads to strong coupling between the external aircraft flow and engine internal flow, associated with an increased degree of flow non-uniformity. As a consequence, the engine components experience changed matching, and their performance is dependent on the engine power settings, aircraft design and flight conditions. All of these installation effects are reflected in engine performance modeling, which can enable reliable engine performance assessment. In this context, this article investigates the sensitivity of such engines and discusses possible approaches and preliminary ideas in extending engine performance modeling.
Keywords: engine performance; engine cycle design; installation effect engine performance; engine cycle design; installation effect

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MDPI and ACS Style

Yuan, Y.; Iyer, N.; Staudacher, S.; Friedrichs, J. The Challenges in Extending Engine Performance Modeling for Highly Integrated Transport Aircraft. Eng. Proc. 2026, 133, 181. https://doi.org/10.3390/engproc2026133181

AMA Style

Yuan Y, Iyer N, Staudacher S, Friedrichs J. The Challenges in Extending Engine Performance Modeling for Highly Integrated Transport Aircraft. Engineering Proceedings. 2026; 133(1):181. https://doi.org/10.3390/engproc2026133181

Chicago/Turabian Style

Yuan, Yiwen, Niraj Iyer, Stephan Staudacher, and Jens Friedrichs. 2026. "The Challenges in Extending Engine Performance Modeling for Highly Integrated Transport Aircraft" Engineering Proceedings 133, no. 1: 181. https://doi.org/10.3390/engproc2026133181

APA Style

Yuan, Y., Iyer, N., Staudacher, S., & Friedrichs, J. (2026). The Challenges in Extending Engine Performance Modeling for Highly Integrated Transport Aircraft. Engineering Proceedings, 133(1), 181. https://doi.org/10.3390/engproc2026133181

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