How to get something to orbit Eve?

[aleccim15]

I have tried so many times to get an orbit around Eve after a landing. I have been playing for a very long time and I have done nearly everything EXCEPT land on eve. I have no problem getting some of my pretty big landers to Eve and landing them safely, but I can't get them to orbit once I landed them. Things that could easily get into Kerbin orbit with tons of fuel to spare can't even get out of the lower atmosphere on eve. I normally never ask for help with this kind of stuff, but I'm going to swallow my pride and ask, does anyone have a craft that they know can get off Eve. If so, what is it like. Oh, and no mods please. Not even mech jeb or kerbal engineer. I'm a KSP purist.

[Temstar]

To get back to Low Eve Orbit from the surface requires a craft that can roughly go from surface of Kerbin to LKO, then aerobrake down to land, then take off and get back to LKO again without refuelling. It's about 4500m/s to get to LKO. To get off Eve to 100km you need a minimum of:

7500m/s from 6.5km high mountain top

9000m/s from 5km high mountain top

12000m/s from sea level

So generally you need a combination of very clever engineering, landing at high altitudes and brutal power to get back.

I managed to do a 2 man landing and return mission to Eve in 0.19, this is my return craft:

It's an open-air rocket with the Kerbals hanging onto ladders on their way back.

Full details on the mission and craft files here:

http://forum.kerbalspaceprogram.com/showthread.php/30909-Two-men-Eve-landing-and-return-%28image-heavy%29

[stupid_chris]

Getting off Eve is probably the hardest thing in the game. The atmosphere is so thick it's ridiculous. And the almost double gravity makes it works. Overall you need 12000m/s of delta V to get in low Eve Orbit. Now, if you would use some mods like Kerbal Engineer you could easily know how much delta V is on your lander, but since you're a purist, you're gonna have to manually calculate it. I don't know the equations by heart but you can probs find them around the forums. As for tips to do it: Take it slow. Eve's atmosphere is five times thicker at sea level. Terminal velocity there is about 58 m/s, going up really slowly as you get up the atmosphere. And you might not want to start your gravity turn before 35ish km up. And do it very gently. Your best bet is aerospikes. Tons and tons of aerospikes. And a lot of staging tanks. You're gonna want to stage pretty much everything by the time you're in orbit. You're gonna need something in orbit you can dock to to get back to Kerbin, cause you're not gonna make it in one go. Just calculate your delta V correctly and you should be good. And make sure your TWR stays above 1.6/1.7. You're gonna have to calculate that too manually.

[Yuming]

I recommend reading Brotoro's "Exiting Eve" for an idea on the size and style of a lander you are going to need.

http://www.mindspring.com/~sportrocketry/ksp/exitingeve.html

[magnemoe]

If you use the balloon mod, http://kerbalspaceprogram.com/hooligan-labs-airship-parts-and-plugin/

it becomes far easier to get out, just a bit below 6.0000 m/s,

[birrhan]

I have tried so many times to get an orbit around Eve after a landing. I have been playing for a very long time and I have done nearly everything EXCEPT land on eve. I have no problem getting some of my pretty big landers to Eve and landing them safely, but I can't get them to orbit once I landed them. Things that could easily get into Kerbin orbit with tons of fuel to spare can't even get out of the lower atmosphere on eve. I normally never ask for help with this kind of stuff, but I'm going to swallow my pride and ask, does anyone have a craft that they know can get off Eve. If so, what is it like. Oh, and no mods please. Not even mech jeb or kerbal engineer. I'm a KSP purist.

You're not going to do it without engineer. I encourage you to use mods that generate data only--you're still using your skill set, just with more data. Frankly, I'm pretty sure an Eve lander pushes the limits of what is actually feasible to build.

If you want help, but don't want to cheat, give us your model craft, or a picture. All this talk about dv and TWR and tonnage is useless to you without engineer, so we'd need something tangible from you.

[Specialist290]

Strictly speaking, you don't really need Kerbal Engineer or MechJeb to give you the info if you can work out the equations yourself; it's just that the computer can do it much faster with its own resources than you can with a pocket calculator and several scraps of paper.

But yes, I'd highly recommend using KER at the very least for precisely that reason.