Auto Credit Based on GreenGalaxy's Vector4

Flight to space!

First stage of the rocket can back to launch pad by vizzy program.Taking advantage of landing leg and grid fin,the rocket can landing safely.

Second stage can send payload to Droo orbit autonomously.

500km * 500km SSO: 30 tons;
300km * 300km Low Droo orbit: 37 tons;
8804km * 80km GTO: 25 tons;

All the rocket use kerolox to save money.It's cheap and suitable to use in career.

AG1: Vizzy program. AG8: Landing leg. AG9: Grid fin.

Only touch AG1!Don't touch anything.

Check stages before launch!

make sure you game is 1.3 version

Vector4 Heavy will coming soon!
Feel free to report any problem.

Give me an upvote please!


  • Predecessor: Vector4
  • Created On: Windows
  • Game Version:
  • Price: $39,075k
  • Number of Parts: 308
  • Dimensions: 54 m x 12 m x 11 m


  • Total Delta V: 6.0km/s
  • Total Thrust: 6.7MN
  • Engines: 12
  • Wet Mass: 4.63E+5kg
  • Dry Mass: 93,341kg


Stage Engines Delta V Thrust Burn Mass
1 7 2.9km/s 6.0MN 2.4m 4.63E+5kg
2 0 0m/s 0N 0s 1.09E+5kg
3 1 3.1km/s 658kN 5.4m 1.09E+5kg


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    @GreenGalaxy I'm sure it would work, however during the back burn it points down instead of retrograde to its velocity. I will check my settings as well. I like the launch tower and the color scheme, and your other crafts work well, so I must be doing something wrong. I will upvote it because to other people it works very well, and I like the vizzy showing altitude, mission time, as well as velocity.

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    @ToadAeronautics In fact,inf.fuel makes things getting worse.MAKE SURE YOU GAME IS 1.3 VERSION AND CHECK YOU SETTINGS.

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    Doesn't work for me, do you have to use inf. fuel?

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    @MarsUnderDoge In fact,taking adwantage of wiggling,the booster can reduce its velocity and reduce fuel use in the landing burn.

    7 days ago
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    Nicely done, It's so incredible, but for some reason if i enter 150km as apo and peri the second stage orbit ends up in 30thousand km or something, and is the booster supose to wiggle aggresively when gliding? but other than that, the booster landings was spot on, and almost perfect. Well played!!

    +1 8 days ago
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    This was one of the best auto recovery rockets I’ve seen

    +1 8 days ago
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    2,877 W4RP

    This is awsome, I always love to see that there are still auto recovering rockets out there

    +2 9 days ago
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    @TomKerbal Thanks!

    10 days ago
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    1,802 TomKerbal

    @GreenGalaxy THAT is brilliant ! Congratulations ! The most impressive work I have seen here so far. Worth hundreds of upvotes.
    It reminds me a lot of the Starship launches. Of course, it would also be extremely interesting if you could do that here in the RSS - maybe even with the Starship.
    Extremely strong!
    When you send the booster back, you first slow it down to zero speed and then "throw" it back to the landing site in a parabola, is that the idea?
    I also think your steering with the gridfins is great!

    +1 11 days ago
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    With unlimited fuel it’s incredibly accurate and a beautiful piece of vizzy !

    12 days ago
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    I don’t know how to auto land so firck it

    12 days ago
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    If you have a stage that lands on the same pad you have done well that hasn’t been obtained in my experience.

    12 days ago


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