# Glide ratio and descent
# Scope: Steady still-air glide from supplied lift/drag ratio.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

altitude = 100 m
liftDrag = 10
airspeed = 12 m/s

angle := atan(1/liftDrag) [rad]
range := altitude*liftDrag [m]
sinkRate := airspeed*sin(angle) [m/s]

check glide range target: range >= 800 m

scenario alternative: altitude = 80 m