Originally Posted by
Gripper123
Can any other poor old soul remember dry/wet max take-off weights. how much the water weighed or the tank capacity?
As I recall it the water was used to extend the Spey's flat-rating to higher ambient temperatures, rather than increasing the maximum thrust. It follows that the MTOW did not change.
Can't remember tank capacity but as, unlike the 1-11, the Trident did not use water in the missed approach only the amount of water needed for the take-off was loaded and it was all used.