# Propeller thrust and power screening
# Scope: Static propeller coefficient model; coefficients require measured matching data.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

diameter = 0.25 m
speed = 6000 rpm
density = 1.225 kg/m^3
thrustCoefficient = 0.1
powerCoefficient = 0.05

period := 2*pi/speed [s]
revolutions := 1/period [s^-1]
thrust := thrustCoefficient*density*revolutions^2*diameter^4 [N]
power := powerCoefficient*density*revolutions^3*diameter^5 [W]

check thrust target: thrust >= 4 N

scenario alternative: diameter = 0.2 m