SLS Stage A

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SLS Stage A

LOx/LH2 propellant rocket stage. Smallest LOx/LH2 stage planned for SLS series. Empty mass estimated. Sized for rail transport within USA.

AKA: SLS 1. Status: Study 1961. Thrust: 889.33 kN (199,928 lbf). Gross mass: 59,000 kg (130,000 lb). Unfuelled mass: 6,000 kg (13,200 lb). Specific impulse: 424 s. Burn time: 250 s. Height: 15.00 m (49.00 ft). Diameter: 4.28 m (14.04 ft). Span: 4.28 m (14.04 ft).

Country: USA. Engines: J-2. Launch Vehicles: SLS A-410, SLS AB-825, SLS A-388. Propellants: Lox/LH2.

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