Doesn't the B-52 and some KC-135s still rely on water injection, too?
http://answers.yahoo.com/question/in...7085218AAMuU7p
[quote]
The J-57 engine used on older B52s and KC-135 tankers both used water injection for takeoff. The concept was the same as in the piston engines; it lowers peak combustion temperatures. In a turbine engine, this allows you to kick up the fuel delivery rates for more power during takeoff without the risk of going over-temp in the turbine section.
Source(s):
Former AF "SAC Trained Killer", working in aircraft maintenance.