The battery weight fraction is a parameter in aerospace engineering that quantifies the proportion of an electric aircraft’s total weight attributed to the battery. This fraction is a crucial metric for assessing the impact of the battery’s mass on the overall weight of the aircraft, guiding design considerations for optimal performance and efficiency in electric aviation. The formula to calculate Battery weight fraction as follows:
Where
- is the weight battery fraction,
- is the range of the flight in m,
- is the specific energy of the battery j/kg,
- is the efficiency,
- is the maximum lift-to-drag ratio.