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Jool Grand Tour


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Brief question, folks: as per your experience, how much dv is needed for the Jool Grand Tour, starting from LKO, incl. return to Kerbin (standard reentry with just the pod and Kerbin PE some 30km)?

Right now, my quick built vessel has 17k m/s left, staying in low Kerbin parking orbit.

Edited by VoidSquid
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18 hours ago, VoidSquid said:

Brief question, folks: as per your experience, how much dv is needed for the Jool Grand Tour, starting from LKO, incl. return to Kerbin (standard reentry with just the pod and Kerbin PE some 30km)?

That depends on your order of visitation, vessel design, preferred return profile, and use of assists, among other things, but you can definitely do it with 17 km/s.  I tend to completely overdo my delta-V budget because I'm usually looking to do other things, such as establish stations and bases, so I don't have a good number for you.  Still, here's a link to a slightly outdated Jool-system delta-V map for your perusal and to aid with planning.  The only inaccuracy I know of is that the Laythe entry data is wrong because this was made with the old aerodynamics model.  However, that also means that it overestimates the needed delta-V by quite a lot (about 500 m/s if I recall correctly), so it shouldn't be a problem.

Also, here's the current Jool-5 challenge thread.  That may help, too.

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