 2020 design of the Exploration Upper Stage | |
| Manufacturer | Boeing[1] |
|---|---|
| Country of origin | United States |
| Used on | SLS Block 1B and Block 2[2] |
| General characteristics | |
| Height | No more than 18 m (59 ft) |
| Diameter | 8.4 m (28 ft) (LH2 tank) 5.5 m (18 ft) (LOX tank)[3] |
| Propellant mass | 278,000 lb (126,000 kg)[4] |
| Empty mass | 31,110 lb (14,110 kg)[5] |
| Engine details | |
| Powered by | 4 RL10C-3[6] |
| Maximum thrust | 433.1 kN (97,360 lbf) |
| Specific impulse | 460.1 seconds (vacuum) |
| Propellant | LOX / LH2 |
The Exploration Upper Stage (EUS) is a rocket stage under development that will be used for future flights of NASA's Space Launch System (SLS). Used on SLS Block 1B and Block 2, it will replace the SLS Block 1's Interim Cryogenic Propulsion Stage. The stage will be powered by four RL10C-3 engines burning liquid oxygen and liquid hydrogen to produce a total thrust of 433.1 kN (97,360 lbf). The EUS is expected to first fly on Artemis 4 in 2028.[7]
- ^ "NASA, Boeing Finalize US$2.8 billion SLS Core Stage Contract". SpaceNews. 4 July 2014. Archived from the original on 27 July 2014. Retrieved 25 July 2014.
- ^ "Space Launch System Fact Sheet" (PDF). NASA. Retrieved 16 May 2023.
- ^ "1 year down, a galaxy to go". Boeing. Retrieved 12 April 2024.
- ^ |https://arc.aiaa.org/doi/pdf/10.2514/6.2018-4639
- ^ |https://arc.aiaa.org/doi/pdf/10.2514/6.2018-4639
- ^ Cite error: The named reference
RL10_Variantswas invoked but never defined (see the help page). - ^ Foust, Jeff (30 October 2022). "Lunar landing restored for Artemis 4 mission". SpaceNews. Retrieved 31 October 2022.
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