\[
d = \frac{r h}{H} = r_t – r_b
\]
Where:
$d$ = relief displacement
$r$ = radial distance from the top of the object
$h$ = height of the object
$H$ = flying height of the aircraft
$r_t$ = radial distance from the top of the object
$r_b$ = radial distance from the bottom of the object
$d$ = relief displacement
$r$ = radial distance from the top of the object
$h$ = height of the object
$H$ = flying height of the aircraft
$r_t$ = radial distance from the top of the object
$r_b$ = radial distance from the bottom of the object