Super Heavy-lift Launch Vehicle

A super heavy-lift launch vehicle can lift to low Earth orbit more than by United States (NASA) classification or by Russian classification. It is the most capable launch vehicle classification by mass to orbit, exceeding that of the heavy-lift launch vehicle classification. Crewed lunar and interplanetary missions are often developed around these launch vehicles' payload capacity.

Many early super heavy-lift launch vehicle concepts were made in the 1960s, such as the Sea Dragon. During the Space Race, the Saturn V and N1 were built by the United States and Soviet Union. After the Saturn V's successful Apollo program and the N1's failures, the Soviets' Energia launched twice in the 1980s, once with the Buran spaceplane. The next two decades saw multiple concepts drawn out once again, most notably Shuttle-derived vehicles and Rus-M, but none would be built. In the 2010s, super heavy-lift launch vehicles received interest once again, leading to the launch of the Falcon Heavy and the Space Launch System, and the development of Starship, Long March, and Yenisei rockets.

Flown vehicles

Retired

* Saturn V was a NASA launch vehicle that made 12 orbital launches between 1967 and 1973, principally for the Apollo program through 1972. The Apollo lunar payload included a command module, service module, and Lunar Module, with a total mass of . When the third stage and Earth-orbit departure fuel was included, Saturn V placed approximately into low Earth orbit. The final launch of Saturn V in 1973 placed ''Skylab'', a payload, into LEO.
* The Energia launcher was designed by the Soviet Union to launch up to to low Earth orbit. Energia launched twice in 1987/88 before the program was cancelled by the Russian government, which succeeded the Soviet Union, but only the second flight payload reached orbit. On the first flight, launching the Polyus weapons platform (approximately ), the vehicle failed to enter orbit due to a software error on the kick-stage. The second flight successfully launched the Buran orbiter. The NASA Space Shuttle differed from traditional rockets in that the orbiter was essentially a reusable stage that carried cargo internally. Buran was intended to be reusable, similar to the Space Shuttle Orbiter, but not a rocket stage as it had no rocket engines (except for on-orbit maneuvering). It relied entirely on the disposable launcher Energia to reach orbit.

Operational

* Falcon Heavy is rated to launch to low Earth orbit (LEO) in a fully expendable configuration and an estimated in a partially reusable configuration, in which only two of its three boosters are recovered. The latter configuration flew on 1 November 2022, but with a much smaller ~ payload being launched to geostationary orbit. The first test flight occurred on 6 February 2018, in a configuration in which recovery of all three boosters was attempted, with Elon Musk's Tesla Roadster of sent to an orbit beyond Mars. A second and third flight have launched payloads of and .
*The Space Launch System (SLS) is a US government super heavy-lift expendable launch vehicle, which was developed by NASA in a well-funded program for nearly a decade, and launched its first mission on 16 November of 2022. It is slated to be the primary launch vehicle for NASA's deep space exploration plans, including the planned crewed lunar flights of the Artemis program and a possible follow-on human mission to Mars in the 2030s.

Comparison

Includes mass of Apollo command and service modules, Apollo Lunar Module, Spacecraft/LM Adapter, Saturn V Instrument Unit, S-IVB stage, and propellant for translunar injection; payload mass to LEO is about

Required upper stage or payload to perform final orbital insertion

Side booster cores recoverable and centre core intentionally expended. First re-use of the side boosters was demonstrated in 2019 when the ones used on the Arabsat-6A launch were reused on the STP-2 launch.

Includes mass of Orion spacecraft, European Service Module, Interim Cryogenic Propulsion Stage, and propellant for translunar injection

Does not include dry mass of spaceship

Proposed designs

Chinese proposals

Long March 5G was first proposed in 2018 as a concept for the Chinese Lunar Exploration Program. Long March 9, a to LEO capable rocket was proposed in 2018 by China, with plans to launch the rocket by 2028. The length of the Long March-9 will exceed 103 meters, and the rocket would have a core stage with a diameter of 10 meters. Long March 9 is expected to carry a payload of 140 tonnes into low-Earth orbit, with a capacity of 50 tonnes for Earth-Moon transfer orbit. Development was approved in 2021.

Russian proposals

Yenisei, a super heavy-lift launch vehicle using existing components instead of pushing the less-powerful Angara A5V project, was proposed by Russia's RSC Energia in August 2016.

A revival of the Energia booster was also proposed in 2016, also to avoid pushing the Angara project. If developed, this vehicle could allow Russia to launch missions towards establishing a permanent Moon base with simpler logistics, launching just one or two 80-to-160-tonne super-heavy rockets instead of four 40-tonne Angara A5Vs implying quick-sequence launches and multiple in-orbit rendezvous. In February 2018, the КРК СТК (space rocket complex of the super-heavy class) design was updated to lift at least 90 tonnes to LEO and 20 tonnes to lunar polar orbit, and to be launched from Vostochny Cosmodrome. The first flight is scheduled for 2028, with Moon landings starting in 2030. It looks like this proposal has been at least paused.

US proposals

The SpaceX Starship system is a two-stage-to-orbit fully reusable launch vehicle being privately developed by SpaceX, consisting of the Super Heavy booster as the first stage and a second stage, also called Starship. It is designed to be a long-duration cargo and passenger-carrying spacecraft. Testing of the second stage is underway, and an orbital test of the full rocket is planned for the second half of 2022 at the earliest.

Blue Origin has plans for a project following their New Glenn rocket, termed ''New Armstrong'', which some media sources have speculated will be a larger launch vehicle.

Cancelled designs

Numerous super-heavy-lift vehicles have been proposed and received various levels of development prior to their cancellation.

As part of the Soviet crewed lunar project to compete with Apollo/Saturn V, the N1 rocket was secretly designed with a payload capacity of . Four test vehicles were launched from 1969 to 1972, but all failed shortly after lift-off. The program was suspended in May 1974 and formally cancelled in March 1976. The Soviet UR-700 rocket design concept competed against the N1, but was never developed. In the concept, it was to have had a payload capacity of up to to low earth orbit.

During project Aelita (1969-1972), the Soviets were developing a way to beat the Americans to Mars. They designed the UR-700m, a nuclear powered variant of the UR-700, to assemble the MK-700 spacecraft in earth orbit in two launches. The rocket would have a payload capacity of . The only Universal Rocket to make it past the design phase was the UR-500 while the N1 was selected to be the Soviets' HLV for lunar and Martian missions.

The General Dynamics Nexus was proposed in the 1960s as a fully reusable successor to the Saturn V rocket, having the capacity of transporting up to to orbit.

The UR-900, proposed in 1969, would have had a payload capacity of to low earth orbit. It never left the drawing board.

The American Saturn MLV family of rockets was proposed in 1965 by NASA as successors to the Saturn V rocket. It would have been able to carry up to to low Earth orbit. The Nova designs were also studied by NASA before the agency chose the Saturn V in the early 1960s.

Based on the recommendations of the Stafford Synthesis report, First Lunar Outpost (FLO) would have relied on a massive Saturn-derived launch vehicle known as the Comet HLLV. The Comet would have been capable of injecting into low earth orbit and on a TLI making it one of the most capable vehicles ever designed. FLO was cancelled during the design process along with the rest of the Space Exploration Initiative.

The U.S. Ares V for the Constellation program was intended to reuse many elements of the Space Shuttle program, both on the ground and flight hardware, to save costs. The Ares V was designed to carry and was cancelled in 2010.

The Shuttle-Derived Heavy Lift Launch Vehicle ("HLV") was an alternate super heavy-lift launch vehicle proposal for the NASA Constellation program, proposed in 2009.

A 1962 design proposal, Sea Dragon, called for an enormous tall, sea-launched rocket capable of lifting to low Earth orbit. Although preliminary engineering of the design was done by TRW, the project never moved forward due to the closing of NASA's Future Projects Branch.

The Rus-M was a proposed Russian family of launchers whose development began in 2009. It would have had two super heavy variants: one able to lift 50-60 tons, and another able to lift 130-150 tons.

SpaceX Interplanetary Transport System was a diameter launch vehicle concept unveiled in 2016. The payload capability was to be in an expendable configuration or in a reusable configuration. In 2017 the 12 m evolved into a diameter concept Big Falcon Rocket which was renamed as SpaceX Starship.

See also

* Comparison of orbital launch systems
* List of orbital launch systems
* Sounding rocket, suborbital launch vehicle
* Small-lift launch vehicle, capable of lifting up to to low Earth orbit
* Medium-lift launch vehicle, capable of lifting of payload into low Earth orbit
* Heavy-lift launch vehicle, capable of lifting of payload into low Earth orbit

Notes

References

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Space launch vehicles