Saturn V-A

Saturn V-A was a proposed American orbital launch vehicle. It was 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.[1]: 1102  For deep-space missions, a Centaur third stage could also have been used.

  1. ^ Scott, Ronald D.; Corcoran, William L. (1968). "Saturn V Derivatives". SAE Transactions. 77. SAE International: 1099–1112. JSTOR 44565202.