Reverse Thrust Efficacy
Hi all,
Does anyone have a document or reference that gives an approximate number for the efficacy of reverse thrust on deceleration? It is more effective at high speed which we all know but is there a number we could use out there?
I recall on the 737 that using Autobrake 1 and reverse would make the brakes cycle on and off as the rate of deceleration was being achieved by reverse/spoilers and friction and the rate of decel using Autobrake 1 is 4ft per second per second. So I'm guesstimating it's around that rate or slightly less at the nominal touchdown speed of 130-140 knots.
This is obviously a slightly more abstract question and to do with landing performance calculations more than the practical reality usage of reverse which is really another and more simple discussion.
Many thanks