# Marine thruster screening
# Scope: Static thruster coefficient model using supplied measured thrust coefficient.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

density = 1025 kg/m^3
diameter = 0.1 m
speed = 3000 rpm
coefficient = 0.2

period := 2*pi/speed [s]
thrust := coefficient*density*diameter^4/period^2 [N]

check static thrust target: thrust >= 40 N

scenario alternative: density = 820 kg/m^3