Sizes
NH90 length: 52'11" rotor dia: 53'6"
S70 length: 64'10" rotor dia: 53'8" (love wikipedia!)
Pad size is not only dependent on physical dimensions, but also down wash generated and aircraft performance.
Nice thread. Good to always air the laundry about 3 years after the decision has been made. I'm still pissed that they retired the .303 and used the SLR. If the .303 was OK for our boys in ww1 and ww2, I see no need for anything else.