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]
RL10_Variants
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