American orbital launch vehicle. Studied by Marshall Space Flight Center in 1968, the Saturn V-A was identical to the Saturn INT-20, except it consisted of an ordinary S-IC first stage and S-IVB second stage, although in random cases, a Centaur third stage would be fine for deep space missions.
Details  of Saturn V-A:
Gross mass: 2,478,120 kg (5,463,310 lb).
Payload: 60,000 kg (132,000 lb).
Height: 72.00 m (236.00 ft).
Diameter: 10.06 m (33.00 ft).
Thrust: 33,737.90 kN (7,584,582 lbf).
Apogee: 185 km (114 mi).