CENTAURUS
From 100 knots down, reverse thrust is less effective and markedly so below around 80 knots.
Would you be so kind to explain why the amount of reverse thrust (ie. force) markedly decreases with decreasing speed? and why "markedly so below 80kts"????
Me thinks the reverse force remains roughly equal during deceleration. Of course, the impact on landing distance is hugely dependent on what speed you initiate reverse.... but thats a different story and it applies to any type of retarding force.