BlueOrigin's BE-3U engine is a Open bleed expander cycle engine delevoped for their New Glenn rocket. it'll function as an upper stage engine that runs on LH2. their will be two on New glenn's upperstage, sadly once again i had too guess the Isp of a blue origin engine, since this is an open expander cycle engine some efficency is lost by dumping the fuel vapor, and using the RL-10A as a base line i put its vac Isp at 430s it might be higher than his but idk since blue origin is so secretive.

Thrust: 710 Kn

Isp 430s Vac

PowerCycle: Staged(Since there is no open bleed expander cycle in this game

Fuel: HydroLOX



  • Created On: Windows
  • Game Version:
  • Price: $6,471k
  • Number of Parts: 886
  • Dimensions: 46m x 27m x 37m


  • Total Delta V: 365m/s
  • Total Thrust: 716kN
  • Engines: 1
  • Wet Mass: 1,027,374kg
  • Dry Mass: 923,209kg


Stage Engines Delta V Thrust Burn Mass
1 1 365m/s 716kN 502s 1,027,374kg


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    14.6k MarioG

    @Icantthinkofaname nice thanks man

    +1 2 months ago
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    Go to 41:10 on the presentation he said it’s 453

    +1 2 months ago
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    @MarioG I think he mentioned it during the unveiling of blue moon, I think it was 457 but I'd have to go back and check again.

    +1 2 months ago
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    14.6k MarioG

    @Icantthinkofaname i think you might be wrong about that i think he only released the thrust i cant find Isp. Dosent surprise me :(

    +1 2 months ago
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    could you make the blue moon lander?

    2 months ago
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    maybe you could do the new BE-7, Jeff at least gave us the isp of that one

    +2 2 months ago


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