Battery Sizing
lift + cruise VTOL
Not saved
FTMS ↗
Configurations 0
Airframe
Battery packs
Mission phases
km/h
How phases work
Normal
Flown and consumed. Its energy counts against the mission.
Reserve
Energy that must still be in the pack at landing. It is budgeted, not flown, and is not checked for current.
Derived
Reuses another phase’s consumption times a factor, e.g. Descent = 0.6 × Hover. Pick the source under the name; the factor goes in the Vertical column.
A / W
A/m: average current per motor, as on a motor datasheet. ΣA: average current of all the motors of that lift system together, e.g. from a current sensor on its bus. W: average electrical power of all the motors of that lift system, e.g. from a flight log. All are averages over the phase, not totals of energy.
Pack current
What the pack delivers during the phase. It is compared with the pack’s continuous and burst ratings (C × capacity).
Energy
Power × duration, computed by the server. 80 % of pack energy is usable.
Energy and power per phase
Vertical Horizontal
Live analysis —
Current headroom
Checks 0

Battery Sizing

Sign in with your FTMS account to size battery configurations for lift+cruise VTOL aircraft.