Saturn MLV

Background

The Saturn Modified Launch Vehicle programme proposed a number of post-Apollo Saturn V derived concepts, intended to create uprated intermediate and heavy launch vehicles based on Saturn V hardware. Saturn MLV features upgraded F-1A engines, stretched tanks for the S-IC and S-II, and upgraded HG-3 engines for both upper stages.

Saturn V INT-20 uses the S-IC and S-IVB, skipping the S-II altogether and reducing the number of first stage engines to compensate for the lower overall mass. INT-21 uses S-IC and S-II second stage with no S-IVB upper stage. A similar design launched Skylab, given that the orbital workshop was a converted S-IVB stage.

Saturn V-B/C/D concepts are a stage and a half designs, similar to Atlas. The first stage consists of five F-1 engines, of which four are jettisoned leaving the single sustainer engine to carry the payload into orbit. S-IVB is added to the V-C for achieving higher orbits and an optional Centaur upper stage for deep space missions. The V-D is essentially a fully upgraded Saturn V with the addition of 4 large SRBs. Truly a bonkers rocket.

Various post-Apollo optimised and stretched tankage is available in the BDB Optionals folder, as well as a patch for the S-IC engine mounting plate to allow fitting fewer than 4 engines. Experimentation is encouraged!

Tags: Sarnus

Variants

Launch Vehicle	First Stage	Boosters	Second Stage	Third Stage	Fourth Stage
Saturn V INT-20	Sarnus S-IC	2x UA1207	S-IVB
Saturn V INT-21	Sarnus S-IC	4x UA1207	S-II
Saturn V ELV	Sarnus MS-IC	4x UA1207	MS-II	MS-IVB
Saturn MLV-V-4	Sarnus MS-IC-4	4x UA1205	MS-II	MS-IVB
Saturn V-C	Sarnus S-ID		S-IVB	S-V (Centaur)
Saturn V-D	Sarnus S-ID	4x UA1207	S-II	S-IVB	S-V (Centaur)

Basic Build Guide

From top to bottom

Upper Stages

• S-V (Centaur D)
• S-IVB with Sarnus HG-3 Cryogenic engine

• MS-II
  • Sarnus MS-IIA Stretched cryogenic fuel tank
  • Sarnus KSII-2300-7X Engine mount
  • Sarnus HG-3 Cryogenic engines

First Stage & Boosters

• MS-IC
  • Sarnus MS-IC Stretched or S-IC-FB Flat Bulkhead Liquid fuel tank
  • Sarnus S-IC Engine mount
  • 3-5x Sarnus-LE1FA-2214 Liquid engine
  • 0-4x Prometheus-1205 or 1207 SRB

Saturn V INT-20, INT-21

Kerbal Koncepts: Saturn V ELV with an ACES fourth stage