Auto Credit Based on Silentime's STL vel c2 (auto LEO)

This is the RSS version of STL vel C2. It's not all the same in appearance, it's just changed to adapt to the RSS environment. It has 2 tons of GTO launch capacity and 14 tons of Leo launch capacity. It also has a Leo automatic launch vizzy (Leo 250km).

Tip: Please select either equator launch pad or sea launch pad to launch. at North /South launch Pad may fail. The test is based on rss2.0.

If you go to GTO, leave the second rocket after automatic LEO, then manually, or modify Vizzy.


  • Predecessor: STL vel c2 (auto LEO)
  • Successors 1 craft(s)
  • Created On: Android
  • Game Version: 0.9.404.0
  • Price: $46,399k
  • Number of Parts: 120
  • Dimensions: 82 m x 8 m x 5 m


  • Total Delta V: 13.4km/s
  • Total Thrust: 12.2MN
  • Engines: 11
  • Wet Mass: 6.87E+5kg
  • Dry Mass: 68,950kg


Stage Engines Delta V Thrust Burn Mass
2 5 4.0km/s 10.1MN 2.4m 6.86E+5kg
5 1 5.2km/s 1.8MN 3.4m 1.22E+5kg
7 1 2.5km/s 317kN 84s 14,312kg
9 4 1.7km/s 8kN 5.4m 2,033kg


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    1,499 Silentime

    If you mean that the automatic launcher is not automatically separated from the grading, I'll check again.The image shows the booster and the rectifier simultaneously separates.

    5 months ago
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    1,499 Silentime

    Four small boost engines are used to provide part of the thrust and also to stabilize the steering. And they use the same fuel from the beginning to the end, but I didn't do the ISP balance improvement, so it seems that the efficiency is not very high. But you can see them as one, even with the main engine.

    5 months ago
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    why the boosters cant separate as i saw the image

    5 months ago

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