Is my DeltaV enough?

[Pie Guy]

I currently have an encounter with Ike from Duna orbit. The circularization burn for Ike will be 300 m/s flat, and I currently have 1,888 m/s of DeltaV. If I landed on Ike, would I be able to get back to Kerbin?

[Entropian]

I think so, with good piloting and aerobraking.  I calculated it using this delta-V map: https://i.imgur.com/yO0bQax.png

 

[Gargamel]

Moved to Gameplay Questions. 

[Guest]

3 hours ago, Pie Guy said:

I currently have an encounter with Ike from Duna orbit. The circularization burn for Ike will be 300 m/s flat, and I currently have 1,888 m/s of DeltaV. If I landed on Ike, would I be able to get back to Kerbin?

You have according to D/V calculators about 500 meters to spare. But that is if you are a good pilot. So be a good pilot

Oh wait if you haven't done circularization than about 200

Edited August 22, 2020 by Guest

[king of nowhere]

it's very close.

the deltaV map shows 130 m/s to get from kerbin escape to duna, but that's from kerbin orbit, when you have a lot of oberth effect to help you. i tried getting to duna from minmus, where i have little to no oberth effect, and it costs five times as much (though it's still convenient because you save 930 m/s to escape kerbin).

on duna you get less oberth effect than you get on kerbin, but far more than minmus. so, the 130 m/s manuever to reach kerbin intercept will be more expensive. how much more expensive? enough that you can cover it with the 200 m/s you have spare? maybe.

but add in that it's rare to make a rocket landing without spending extra fuel, i wouldn't bet on you not neding a rescue mission

[Lewie]

You will be pulling it close....But you can do it!

By any chance you do strand your kerbals, head on over to ksp discussion to the kerbal rescue force and we’ll be able to rescue ‘em.

but that shouldn’t happen....Cus we believe 100% you can do this!