Saturn V ELV

This article is about a proposed enlarged Saturn V. For the Saturn V expendable launch vehicle (ELV), see Saturn V.

The Saturn V-ELV (Earth Launch Vehicle) was to be an enlarged Saturn V with the addition of four UA1207^[1] solid rocket boosters derived from the Titan IV launch vehicle and liquid propellant stages derived from the conceptual Saturn MLV-V-4(S)-A* and MLV-V-1A.^[1] Had it been built it would have been able to put a 200,000 kg payload into low Earth orbit or a 67,000 kg payload into a translunar trajectory. The ELV was intended to serve as part of a crewed NASA mission to Mars, though that idea eventually fell out of favor largely due to political and financial concerns.^[2] A Mars mission would have used a total of 10 ELV's - 6 for the space vehicle and 4 for the logistics vehicles.^[2] In addition to Mars, the ELV was intended to serve as a platform for unmanned exploratory missions to Venus.^[2]

Saturn V-ELV

Function	orbital launch vehicle
Country of origin	United States
Size
Height	124 m (407 ft)
Diameter	10 m (33 ft)
Mass	5,172,820 kg (11,404,120 lb)
Stages	3
Capacity
Payload to LEO
Mass	200,000 kg (440,000 lb)
Launch history
Status	Proposal
Boosters - SRBs
Engines	4 UA1207
Thrust	7.12 MN (1,600,000 lbf)
Burn time	120 seconds
Propellant	solid
First stage - MS-IC-4(S)B
Engines	5 Rocketdyne F-1
Thrust	38.72 MN (8,700,000 lbf)
Burn time	206 seconds
Propellant	RP-1 / LOX
Second stage MS-II-1A
Engines	7 Rocketdyne J-2
Thrust	63.81 MN (14,350,000 lbf)
Burn time	625 seconds
Propellant	LH2 / LOX
Third stage - MS-IVB-1A
Engines	1 Rocketdyne J-2
Thrust	1.03 MN (230,000 lbf)
Burn time	625 seconds
Propellant	LH2 / LOX

At the time, it appears ELV was also a generic catch-all term for any large crewed rocket. There are references to both the Saturn I and Saturn V as an ELV.^[2]

Plans for ELV Usage

A 1968 proposal for a Saturn V ELV (MLV-SAT-V-25(S)U)

According to the 1968 NASA document "Integrated Manned Interplanetary Spacecraft Concept Definition", there was a planned schedule for exploration under the ELV program.^[2] After the first crewed Apollo lunar landing, NASA was hoping to progress through the following list:

1. First uncrewed hyperbolic reentry at 65k feet per second.
2. First nuclear engine ground firing.
3. First nuclear engine and nuclear stage space firing.
4. First launch of an uprated Saturn V-ELV.
5. First crewed hyperbolic reentry at 65k feet per second.
6. First long-time space soak and firing of a nuclear propulsion module. (Note: In this context, "space soak" means “to leave in space for an extended period of time”^[3])
7. First long-time simulated crewed planetary mission operation.
8. First full planetary simulated mission in Earth orbit.
9. First crewed planet reentry simulation.
10. First crewed planetary capture mission.
11. First crewed planetary landing mission.

Vehicle Layout

Zero Stage	1st Stage	2nd Stage	3rd Stage
4x UA1207	MS-IC-4(S)B	MS-II-1A	MS-IVB-1A