Modelling of A Boundary Layer Ingesting Propulsor

Nils Budziszewski and Jens Friedrichs
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Nils Budziszewski: Institute of Jet Propulsion and Turbomachinery, TU Braunschweig, Hermann-Blenk-Straße 37, D-38108 Braunschweig, Germany
Jens Friedrichs: Institute of Jet Propulsion and Turbomachinery, TU Braunschweig, Hermann-Blenk-Straße 37, D-38108 Braunschweig, Germany

Energies, 2018, vol. 11, issue 4, 1-15

Abstract: Boundary layer ingestion is a promising method to decrease the propulsive power consumption of an aircraft, and therefore the fuel consumption. This leads to a reduced environmental impact and an improved cost-efficiency. To get a better understanding of this method and to estimate its benefits, the modelling of a propulsor located at the upper rear centerbody of a blended wing body aircraft is presented in this paper. A parallel compressor model approach is used to analyse the impact of the ingested low velocity fluid which leads to a non-uniform inflow. The required boundary layer data are generated with an analysis tool for 2D subsonic airfoils. Some parameter variations are conducted with the developed programme to study their impact on the power saving potential. In addition, a simple estimation for the benefit of embedded aeroengines is given. Despite the drawback from fan efficiency due to the inflow distortion, the results show a significant decrease in required propulsive power for boundary layer ingestion in combination with integrated engines.

Keywords: boundary layer ingestion; parallel compressor model; propulsion; embedded aeroengine (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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