to JaneDoH and Iompaseo
Brilliant work, from both of you! I'm impressed! HOWEVER(!!!), given the actually inability of a one-inch hose to deliver the same flow, all other factors being equal, of a two-incher, I must continue to scratch my head as to the actual bypass ratio of the JT-11"D", especially as the cited figure of "2.86(!!!??) to one" not only exceeds that of the very much below mach-3 F-101 on the B-1, but also, (again) considering that pressures at that longitudinal point, just aft of the fourth stage, would be, more or less, uniform from hub to casing, the combined amount of area of the six tubes just doesn't provide that much relief as to provide the bypass ratio you cite. Maybe I'm missing something.
Also, as to the common use of a designation, "JT-3" remained that "D", or no "D". Why not the same for the "JT-("?
OldBUFFKkeeper