Fixed-wing eVTOL UAV are unmanned aerial vehicles with electric powertrains capable
of both hover and fast wing-borne forward flight. The high power consumption of the electric
powertrains during vertical flight is in conflict with the usage of high energy density batteries.
This study suggests dual battery architectures assembled from both high energy and high
power battery types and with different complexity levels to overcome this problem. A
modelling approach on the fidelity level of conceptual aircraft is presented. In an exemplary
study with different aircraft types, the battery architectures’ impact on aircraft performance
is examined. With a single battery architecture as baseline, the results show improvements in
endurance of 10 to 20% as a retrofit solution with current battery technology.
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