# Slider-crank mechanism
# Scope: Inline slider-crank position at one crank angle.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

crank = 20 mm
rod = 80 mm
angle = 45 deg

position := crank*cos(angle)+sqrt(rod^2-crank^2*sin(angle)^2) [mm]
stroke := 2*crank [mm]

check rod longer than crank: rod > crank

scenario alternative: crank = 16 mm