Research Article

Sizing and Mission Profile Analysis of the Hybrid-Electric Propulsion System for Retrofitting a Fixed Wing VTOL Aircraft

Table 1

Technology assessment of hybrid-electric systems [17].

ParametersMinMax

Electric motor efficiency0.860.98
Generator efficiency0.860.98
Battery efficiency0.80.99
Battery power density (kW/kg)0.350.8
Battery energy density (Wh/kg)151260
ICE power density (kW/kg)0.253
Electric motor power density (kW/kg)35