Originally Posted by
Dan64456
Would someone care to explain the last part for me? How does the gradient %times groundspeed translate into FPM?
Thanks!
If Gradient = fpm/feet_in_one_minute
then fpm = feet_in_one_minute * gradient
ex: 450 fpm, 150GS
find how many feet traveled over the ground in one minute: 150kts/60' = 2.5 NM * 6000 = 15000ft traveled over the ground in one minute.
then
Gradient = 450ft/min/15000 = 0.03 * 100 = 3% gradient
so 3(gradient) * 150(GS) = 450 ft/min
or 0.03(before the multiplication) * 15000(feet traveled in one minute) = 450ft/min
whichever you like
