Numerical investigation of the effects of fuselage upsweep in a propulsive fuselage concept

Anaïs Luisa Habermann, Anubhav Gokhale, Mirko Hornung

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


In recent years, aircraft concepts employing wake-filling devices to reduce mission fuel burn have gained increasing attention. The study presented here aims at a detailed physical understanding of the effects of integrating a propulsive fuselage device on a commercial aircraft. Compared to an isolated, axisymmetric fuselage-propulsor configuration, a propulsive fuselage device experiences an increased circumferential inlet distortion due to three-dimensional geometric features of the aircraft. This study uses three-dimensional CFD simulations to investigate the effect of fuselage upsweep on the aero-propulsive performance of an aircraft configuration featuring a boundary layer ingestion device. It is shown that fuselage upsweep has a negative impact on the performance of a propulsive fuselage device as compared to an axisymmetric configuration. Increasing the upsweep angle by Δ αSW , PFC= 3. 5 leads to an increase in required fuselage fan shaft power by 19%. Furthermore, it is demonstrated that the negative effects of fuselage upsweep on the propulsor’s performance can be effectively mitigated by a circumferential variation in the propulsor nacelle thickness.

Original languageEnglish
Pages (from-to)173-189
Number of pages17
JournalCEAS Aeronautical Journal
Issue number1
StatePublished - Jan 2021
Externally publishedYes


  • Boundary layer ingestion
  • Computational fluid dynamics
  • Propulsive fuselage concept


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