Experimental and numerical studies on small contra-rotating electrical ducted fan engines

Abstract Electrical propulsion has been identified as one of the key fields future research within aerospace sector. The Institute Aeronautical Engineering at Universität der Bundeswehr München aims to contribute ongoing development small-sized electrical ducted fan engines with a thrust in range 100 N. A special emphasis is placed on electrically powered contra-rotating stages. When compared conventional rotor–stator stage, stages allow for more compact design, considering given pressure ratio, or an increased ratio constant diameter. Since numerous new aircraft concepts are presently being developed, high demand and powerful driven arises. Electrically provide potential terms compactness, emissions efficiency. Using electric motors offers ability overcome common issues, such design integration stage into gas turbine. An innovative engine featuring developed tested Institute’s test benches propulsion. Key components two brushless powering each rotor. Various operation points investigated experimentally during extensive campaign. Experimental results numerical simulations computed by ANSYS CFX. Results indicate good agreement between experiment simulation. running very smooth throughout all points. Yet, intensive heating up high-temperature zone found be issue higher rotation speeds.