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CFD Comparison of Selected Distributed Propulsion Configurations for an Inverted-Joined-Wing Airplane Cover

CFD Comparison of Selected Distributed Propulsion Configurations for an Inverted-Joined-Wing Airplane

Open Access
|Jun 2026

Figures & Tables

Fig. 1.

MOSUPS just after takeoff “rotation” (left) and during “flare” just before touchdown (right).

Fig. 2.

Selected configurations of distributed propulsion for MOSUPS.

Fig. 3.

Configurations with pulling and pushing propellers during crosswind landing.

Fig. 4.

Pushing variant with additional fins.

Fig. 5.

Mesh used for calculations.

Fig. 6.

Reverse flow regions on the top surface of MOSUPS in cruising configuration.

Fig. 7.

Effect of engines nacelle on aerodynamic efficiency CL/CD and lift coefficient CL in configurations Prop-1 and Prop-2, in comparison with baseline case without the thrust effect.

Fig. 8.

Pitching moment for analyzed concepts. The influence of modifying the propulsion axis position and propeller selection reveals very large effects.

Fig. 9.

Difference in pressure distributions on the aft wing between tractor and pusher distributed propulsion configurations (AoA=0°).

Fig. 10.

Thanks to increased pitching moment, trim is achieved at higher angle of attack, which improves cruise efficiency. Vertical lines were added to indicate the trim position on the CL/CD plot.

Fig. 11.

The effect of skid installation below the aft wingtips.

Fig. 12.

The effect of increased velocity ahead of EDF in EDF 1 and EDF 2 configurations.

Fig. 13.

Due to increased pitching moment, trim is achieved at higher angle of attack, which improves cruise efficiency. This is especially significant in EDF cases. Vertical lines were added to indicate the trim position on the CL/CD plot.

Summary of distributed propulsion concepts analyzed in the current work_

Concept nameDescription
a)BaselineSingle pusher propeller located behind the fuselage.
b)Prop 1Row of five small propellers in front of each aft wing.
c)Prop 2Row of five small propellers behind each aft wing.
d)HybridThree small propellers added behind of each aft wing.
e)EDF1Row of five ducted fans on each aft wing.
f)EDF2Row of five ducted fans behind each aft wing.
Language: English
Page range: 139 - 151
Submitted on: Apr 8, 2026
Accepted on: May 25, 2026
Published on: Jun 17, 2026
In partnership with: Paradigm Publishing Services

© 2026 Adam Dziubiński, Witold Klimczyk, published by ŁUKASIEWICZ RESEARCH NETWORK – INSTITUTE OF AVIATION
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.