Testing an Eve launcher on Kerbin

Testing an Eve launcher on Kerbin - Woman in Red Shirt Holding Her Face

I'd like to launch a rocket from the surface of Eve. From what I've read, Eve is significantly harder to launch from than Kerbin.

How can I test my Eve launcher design on Kerbin to see that it has sufficient delta-v for the job?

  • I'm looking for an un-modded solution, something that works in KSP right out of the box.
  • I'm only looking at a craft to get from Eve's surface to low Eve orbit. Don't worry about how to get that craft to Eve in the first place.


Best Answer

If you want to do this un-modded, you're going to need your thinking cap and a calculator. Because you'll need to work out your delta-v manually.

You're going to need around 11.5 Km of ?V from sea level, less if you can get a higher LZ. Here's the delta-v calculation cheat sheet, you'll need to apply this to your ship prelaunch, don't forget to calculate for staging and fuel lines.

Delta-V calculation

Then you'll need to make sure your ship will get off the ground, Eve has nearly double the ASL gravity of Kerbin. You'll need a Thrust To Weight (TWR) of at least 2. You can check this by running a test launch from Kerbin at 50% thrust and if can make orbit, you should be good.

I recommend using a mod like MechJeb or Engineer to calculate your TWR and Delta-V.




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Is Eve bigger than kerbin?

Eve is certainly the purplest object in the solar system. It's one of the larger, most visible objects, mainly because of its very, very purple tint. It is considered by some to be almost a sister planet to Kerbin.

How do I launch Eve in KSP?

An Eve-capable rocket, separating from its primary stage.
  • Step 1 - Build Your Rocket. To perform a successful landing on Eve you will need a large space ship. ...
  • Step 2 - Planetary Alignment. ...
  • Step 3 - Launch to Kerbin Orbit. ...
  • Step 4 - Fly from Kerbin to Eve. ...
  • Step 5 - Arriving at Eve. ...
  • Step 6 - Land on Eve (Optional)


  • How do I return from kerbin to Eve?

    Once you got in a stable orbit around Eve, you can meet with your return ship and transfer a pilot to the lander (via EVA). Then using the transfer stage to deorbit the lander to the chosen landing site and then detach it. During descent, get rid of the bottom docking port (if used).

    How do you complete orbit kerbin?

    Steps to Orbit and Back
  • Launch Preparation. Set thrust to maximum by hitting Z. ...
  • Accelerate to 100 m/s. Launch by hitting the space bar and keep the rocket pointed straight up until the vehicle's speed is 100 m/s. ...
  • Pitch 10 degrees East. ...
  • Stage. ...
  • Get apoapsis above 70 km. ...
  • Get periapsis above 70 km. ...
  • De-orbiting. ...
  • Re-entry.




  • Eve Mk1-3 Direct Ascent to Kerbin Testing...




    More answers regarding testing an Eve launcher on Kerbin

    Answer 2

    So you are going to need about 12,000 m/s delta v to orbit Eve at sea level.

    You need about 4500 m/s delta v to orbit Kerbin. If you want to test a design on Kebin before going to Eve, try getting to orbit 3 times on Kerbin (launch, land, launch, land, launch). If you can do that then chances are you have something that can get to Eve orbit.

    I would suggest having something in orbit around Eve that has your return fuel.

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