TY  - CHAP
A1  - Finger, Felix
A1  - Götten, Falk
A1  - Braun, Carsten
A1  - Bil, C.
T1  - On Aircraft Design Under the Consideration of Hybrid-Electric Propulsion Systems
T2  - APISAT 2018: The Proceedings of the 2018 Asia-Pacific International Symposium on Aerospace Technology (APISAT 2018)
N2  - A hybrid-electric propulsion system combines the advantages of fuel-based systems and battery powered systems and offers new design freedom. To take full advantage of this technology, aircraft designers must be aware of its key differences, compared to conventional, carbon-fuel based, propulsion systems. This paper gives an overview of the challenges and potential benefits associated with the design of aircraft that use hybrid-electric propulsion systems. It offers an introduction of the most popular hybrid-electric propulsion architectures and critically assess them against the conventional and fully electric propulsion configurations. The effects on operational aspects and design aspects are covered. Special consideration is given to the application of hybrid-electric propulsion technology to both unmanned and vertical take-off and landing aircraft. The authors conclude that electric propulsion technology has the potential to revolutionize aircraft design. However, new and innovative methods must be researched, to realize the full benefit of the technology.
KW  - Hybrid-electric aircraft
KW  - Aircraft design
KW  - Design rules
KW  - Green aircraft
Y1  - 2019
SN  - 978-981-13-3305-7
U6  - http://dx.doi.org/10.1007/978-981-13-3305-7_99
N1  - APISAT 2018 - Asia-Pacific International Symposium on Aerospace Technology. 16-18 October 2018. Chengdu, China.

Lecture Notes in Electrical Engineering (LNEE, volume 459)
SP  - 1261
EP  - 1272
PB  - Springer
CY  - Singapore
ER  - 
TY  - CHAP
A1  - Finger, Felix
A1  - Götten, Falk
A1  - Braun, Carsten
T1  - Initial Sizing for a Family of Hybrid-Electric VTOL General Aviation Aircraft
T2  - 67. Deutscher Luft- und Raumfahrtkongress 2018
Y1  - 2018
ER  - 
TY  - JOUR
A1  - Finger, Felix
A1  - Götten, Falk
T1  - Neue Ansätze für die Entwicklung von unbemannten Fluggeräten
JF  - Ingenieurspiegel
N2  - Wie sieht das unbemannte Flugzeug von Übermorgen aus? Dieser Frage stellen sich Forscher an der Fachhochschule Aachen. Die weltweit rasant fortschreitende Entwicklung des Marktes für unbemannte Fluggeräte (UAVs - „Unmanned Aerial Vehicles“) bietet großes Potenzial für Wachstum und Wertschöpfung. Unbemannte fliegende Systeme können – für bestimmte Anwendungsgebiete – wesentlich günstiger, kleiner und effizienter ausgelegt werden als bemannte Lösungen. Dabei sind sich viele Unternehmen über das mögliche Potential dieser Technologie noch gar nicht bewusst.
Y1  - 2019
SN  - 1868-5919
N1  - Project: UAV Design
VL  - 2019
IS  - 1
SP  - 67
EP  - 68
ER  - 
TY  - CHAP
A1  - Bergmann, Ole
A1  - Götten, Falk
A1  - Braun, Carsten
A1  - Janser, Frank
T1  - Comparison and evaluation of blade element methods against RANS simulations and test data
T2  - CEAS Aeronautical Journal
N2  - This paper compares several blade element theory (BET) method-based propeller simulation tools, including an evaluation against static propeller ground tests and high-fidelity Reynolds-Average Navier Stokes (RANS) simulations. Two proprietary propeller geometries for paraglider applications are analysed in static and flight conditions. The RANS simulations are validated with the static test data and used as a reference for comparing the BET in flight conditions. The comparison includes the analysis of varying 2D aerodynamic airfoil parameters and different induced velocity calculation methods. The evaluation of the BET propeller simulation tools shows the strength of the BET tools compared to RANS simulations. The RANS simulations underpredict static experimental data within 10% relative error, while appropriate BET tools overpredict the RANS results by 15–20% relative error. A variation in 2D aerodynamic data depicts the need for highly accurate 2D data for accurate BET results. The nonlinear BET coupled with XFOIL for the 2D aerodynamic data matches best with RANS in static operation and flight conditions. The novel BET tool PropCODE combines both approaches and offers further correction models for highly accurate static and flight condition results.
KW  - BET
KW  - CFD propeller simulation
KW  - Propeller aerodynamics
KW  - Actuator disk modelling
KW  - Propeller performance
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s13272-022-00579-1
SN  - 1869-5590 (Online)
SN  - 1869-5582 (Print)
N1  - Corresponding author: Ole Bergmann
VL  - 13
SP  - 535
EP  - 557
PB  - Springer
CY  - Wien
ER  -