heedm
you said:Looking at the total drag curve, the power required for level flight (or constant vertical deceleration) increases as your airspeed slows below min drag airspeed. This makes me think that in a level deceleration you would use more power to decelerate from 50 to -15 knots than from 65 to 0 knots.
but you should photo copy the h\v diagram and put them back to back. now it reads hight and +&- velocity (not 100% safe)
from 0 to -15 would use less power
