From Arda Industries:

We are proud to bring to Droo the technological expertise and capabilites of the Japan Aerospace Exploration Agency (JAXA) with this replica (vanilla) of the H-IIB, a fully expendable medium-lift launch system.

Payload to Low Droo Orbit: 20 Tons

Stages: 2

Fuel: Hydrolox, Solid

NOTE 1: Make small (5 deg. increments) changes in heading while the boosters are providing thrust. After boosters are detached, you can make larger heading changes.

NOTE 2: For best results, change heading early, and in around 10 deg. increments per 10,000m of altitude gained.

NOTE 3: At 65,000m of altitude or at 35 deg. of heading, remain at that heading until your apoapsis is around 200km. Circularize your orbit AFTER this is acomplished, not before.


  • Successors 1 craft(s)
  • Created On: Windows
  • Game Version:
  • Price: $28,117k
  • Number of Parts: 294
  • Dimensions: 56 m x 11 m x 11 m


  • Total Delta V: 5.6km/s
  • Total Thrust: 13.8MN
  • Engines: 11
  • Wet Mass: 4.87E+5kg
  • Dry Mass: 85,249kg


Stage Engines Delta V Thrust Burn Mass
1 6 4.0km/s 11.0MN 5.8m 4.87E+5kg
2 0 0m/s 0N 0s 2.74E+5kg
4 1 1.6km/s 147kN 8.3m 56,142kg


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  • Profile image
    11.2k KraZIvan

    @Klosskopf yeah you're right :D

    2.1 years ago
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    2,368 Klosskopf

    @KraZIvan launching with precise calculations and simulatons with a computer provide a fair margin of confidence I guess

    +1 2.1 years ago
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    11.2k KraZIvan

    @MarioG lol
    Doing the testing I couldn't help but think that when JAXA launch these they must be sweating bullets when the second stage starts, such low thrust doesn't give any margin for error

    2.1 years ago
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    42.3k MarioG

    looks at second stage engine:
    Nerva Flashback

    +2 2.1 years ago
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    +1 2.1 years ago


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