Unix

Also called the Raptor 9 launcher in reference to SpaceX’s Falcon 9 rocket and the fact that it has 9 Raptor engines on its first stage, the Unix rocket is meant as a direct Falcon 9 analogue using SpaceX’s Raptor engines and a methane-oxygen propellant propellant mix instead of the Falcon 9’s kerosene and oxygen. The increased efficiency and more powerful engines give the Unix rocket far more capacity to orbit even when reusing the first stage.

Unlike Falcon 9, the first stage features fins that double as landing legs, with fold-out flaps that provide stability on touchdown. The second stage can be converted into the Lex spacecraft, which is then a recoverable second stage, but the Unix in its normal configuration does not have a recoverable second stage.

Height: 79.7 meters
Full Width: 12 meters
Core Diameter: 6.6 meters

Launch Mass without payload: 1200.45 tons
Payload to Low Earth Orbit (first stage reused): 42 tons

Upper Stage: 249.69 tons; 14.78 tons dry
116,337.7 liters liquid methane
162,984.5 liters liquid oxygen
1 x Raptor Vacuum 2261.0 kN thrust (vac.) 377.7s ISP vac. Burn Time: 384.8 seconds

Lower Stage: 946.73 tons; 51.16 tons dry
438,418.3 liters liquid methane
621,331.0 liters liquid oxygen
9 x Raptor sea level 2256.3 kN thrust (vac.) each 335.7 s ISP s.l. – 358.9 s ISP vac. Burn Time: 168.2 seconds