DGLR Published Conference Papers

Volume 4



 



Title:

Experimental Investigations into the Influence of the Rotational Speed Ratio on the Stability Limit of an Electrically Driven Counter-Rotating Fan

Experimentelle Untersuchungen zum Einfluss des Drehzahlverhältnisses auf die Stabilitätsgrenze eines elektrisch angetriebenen gegenläufigen Fans

Authors:
S. Hawner, A. Hupfer
Abstract:
The use of individual electric motors for the rotors of a counter-rotating aircraft engine makes it possible to optimize the speed ratio for the current operating point. It is demonstrated that this significantly shifts the aerodynamic stability limit of the fan stage to more aggressively throttled states, thereby expanding the possible operating range. This is attributed to a reduction in the incidence angle at the inlet of the rear rotor. Based on the selection of suitable electric motors, a thermal management system is designed that can be implemented despite space limitations.
Event:
Deutscher Luft- und Raumfahrtkongress 2025, Augsburg
Location, Year:
Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2025
Type:
Conference Paper
Language:
German
Format:
21,0 x 29,7 cm, 12 Pages
URN:
DOI:
Descriptors:
EN: Counter-rotating fan stage, speed ratio adjustment, propulsor
Available:
View Paper - Please take note of our Terms of use OPEN ACCESS
Citation:
Hawner, S.; Hupfer, A. (2025): Experimentelle Untersuchungen zum Einfluss des Drehzahlverhältnisses auf die Stabilitätsgrenze eines elektrisch angetriebenen gegenläufigen Fans. DGLR Published Conference Papers. Volume 4. (2026). ISSN: 2941-3451. Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.. (Text). https://doi.org/10.25967/650438. urn:nbn:de:101:1-2512121411267.646687454378.
Publishing Date:
12.12.2025

 

 

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