MS-IVB
The Saturn MLV was a proposed concept family of rockets, intended as a follow-on to the Saturn V. MLV stands for "Modified Launch Vehicle". Vehicle configurations representative of several alternative uprating methods were specified by the Marshall Space Flight Center for initial studies. Proposed modifications # Thrust uprating and modifying of the five F-1 rocket engines used in the first S-IC stage, and corresponding increases in propellant tank capacities. # Addition of a sixth F-1 engine in the S-IC stage, as an alternative to engine uprating, plus increased propellant capacities. # Use of UA1205 solid rocket boosters derived from the Titan IIIC vehicle. # Additional J-2 engines in the S-II stage, ~131 s increased upper stage propellant capacities. # Improved or advanced upper stage engines, such as the HG-3, plus increased propellant capacities. The baseline Saturn MLV would incorporate these changes from the Saturn V vehicle. The Saturn IC first stage would have bee ...
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