Electric Motor and Propeller Thrust calculator

Issue Warnings

Battery
Cell Type
# Cells in serie
# Series in parallel
Cell Capacity
mAh
Cell Resistance
Ohm
Cell Weight
gram
Volts per cell
V
Pack Voltage
V
Pack Weight
gram

Electronic Speed Controller
Speed Controller Resistance
Ohm

Motor( s )
Motor
# Motors
Kv
rpm/V
Idle Current ( Io )
A
Rm
Ohm
Kt
Ncm/A
Recommended Max Current
A
Weight
gram

Max Motor Efficiency in given configuration
Max Eff
%
Current to Motor @ Max Eff
A
Volts to motor @ Max Eff
V
Watts out pr. motor @ Max Eff
W
RPM @ Max Eff
rpm
Idle RPM ( No )
rpm

Gearbox / Prop
Gear Ratio
Gear Efficiency
%
Prop Type
Absorbed Pow. Const.
Thrust Const.
Prop Diameter
inches
Prop Pitch
inches
Prop Blades

Result for Motor( s ) with Gearbox and Prop ( at Speed = 0 )
Motor RPM
rpm
Motor current
A
Volts to motor
V
Motor Watts In
W
Motor Watts Out
W
Motor Efficiency
%
Full-throttle duration
minutes
Approx Power System Weight
gram. Batteries + Motor( s ) + 10%

Propeller Results ( pr. Prop )
Very coarse aproximation used, do not belive too much in it !
Only use results to get an idea of how parameters affect thrust and power.
Throttle setting
%
Zero Thrust V/nD
J
User given Relative J value
%