Duna & Return

[Lohan2008]

I wondering how big does the 2nd stage LKO rocket need to be to take 1 kerbal + Mk1 pod + t800 fuel tank (7.2 t) to Duna and back ?

2> how big do the lifter need to be ??

3>> how much food/water/air does pilot need ?

Edited October 11, 2014 by Lohan2008

[technion]

You may be surprised - getting to Duna is only marginally harder than getting to Minmus. Since you don't appear to be looking to pack a lander, I'd probably just say "try it" with whatever you last took to Minmus.

As for supplies, I don't run any of those mods so I'm not sure.

[Lohan2008]

Sorry, I forgot to say I want to drop ship onto Duna and re-launch, then bring it back to Kerbal.

/facepalm

[Pecan]

I wondering how big does the 2nd stage LKO rocket need to be to take 1 kerbal + Mk1 pod + t800 fuel tank (7.2 t) to Duna and back ?

2> how big do the lifter need to be ??

3>> how much food/water/air does pilot need ?

http://i.imgur.com/f4DdNxQ.png

1. Not very big because you'll use very efficient LV-N engines for the space-only operations.

2. Depends on how good you are at designing one, but 10% payload-ratio is the minimum you should aim for, 15% can usually be done and 20% is sometimes possible. If you use a jet-powered launch vehicle you can do a lot better than that.

3. None at all, unless you are using one or more mods you aren't telling us about.