Drone Flying Autonomy Calculator — E-PROPS for Drones & UAV

This program calculates the maximum flying autonomy of a multicopter. Fill in the form with your own data.

Drone & battery

Propellers diameter (m)

Propellers number (2 coaxial = 1)

Battery specific energy (W·h/kg)

Battery weight (kg)

Total flying weight (kg)

Propeller efficiency (%)

Engine efficiency (%)

Battery efficiency (%)

Air density (kg/m³ — 1.225 at 15°C, 1013.25 hPa)

Results

Maximum stationary flight duration

This modelization is a first approach for information purposes. Important: autonomy is proportional to the propeller diameter.

Formula

(mass flow) dm = 1/2 · ρ · Surface · V
(power flow) Power = 1/2 · dm · V²
Traction = dm · V
...
(absorbed power) Pa = 1/4 · ρ · Surface · (2 · Traction / (ρ · Surface))^(3/2)

Multicopter flying autonomy calculator

Results

Formula