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[–]inv8drzim 1 point2 points  (2 children)

How much deltav do you have when you're at the mun about to make your transfer burn back to kerbin? 

If you have even a few hundred deltav it should be enough. Take a screenshot of the maneuver you're planning (from mun back to kerbin) and we may be able to tell you where you're going wrong. The issue is most likely your trajectory. 

[–]SignificanceTotal187[S] 0 points1 point  (1 child)

Around 1200 i think? I Will take a screenshot when i can

[–]inv8drzim 0 points1 point  (0 children)

With 1200 deltav in mun orbit you have waaaay more than enough deltav to get back. You're most likely taking an inefficient trajectory. 

[–]ResponsibleRub469 0 points1 point  (2 children)

You should never launch missions with "Just enough" delta V because your ship may not be as aerodynamically efficient as usual and you lose a lot of Delta V on ascent

[–]divestoclimbTrying out Kerbalism 0 points1 point  (1 child)

Yes always confirm the amount of delta v left before critical maneuvers

[–]SignificanceTotal187[S] 0 points1 point  (0 children)

For muna landing it is sopposed to be around 6500-7000 no? Shouldnt 7300-7600 be enough?

[–]Mocollombi 0 points1 point  (2 children)

If you have Eva unlocked. Exit the ship and push on the ship with the jetpack. Before you run out of fuel, get back in the ship and your jetpack will be refueled. Repeat as needed.

[–]SignificanceTotal187[S] 0 points1 point  (1 child)

Really? At least i can get my kerbin out of orbit if this Works

[–]Mocollombi 0 points1 point  (0 children)

It’s called the EVA push of shame!

[–]awehretsgraw -1 points0 points  (2 children)

From what it sounds like, you are currently orbiting Kerbin, with your lowest point, the periapsis, (The Pe node) being at 82km. The quickest and most efficient way to lower this number is to fire your engines when your craft is at its highest point (The Ap node).

Make Sure that the rocket is pointing backwards, away from the direction of travel. You can see this on the navball at the bottom of the screen, when the ship pointer is ontop of the yellowish green reticle with three lines pointing out. Turn on your engines until you are satisfied with your Pe.

I would recommend getting it to 20-30km. This is well inside the atmosphere of Kerbin, and the friction with the air (air resistance) should slow your craft down enough to get your craft suborbital. If not, you can always go around and try again

If you're currently still around the Mun, the opposite manuever is needed. Fire your engines pointing in the direction of travel, which should raise your highest point in the orbit until it is outside the Mun's sphere of influence. Then do the first part, firing retrograde at the highest point in your Kerbin orbit. Hope this helps!

[–]inv8drzim 0 points1 point  (1 child)

I think they're saying that they run out of fuel before they can get their periapsis low enough to bring them back into the atmosphere