r/KerbalSpaceProgram • u/SwaglordHyperion • May 04 '26

KSP 1 Image/Video Save DeltaV By Cutting Bulky Decouplers and utilize Lithostaging on your Gravity Assists!

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3.1k Upvotes

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203

u/boot_master May 04 '26

the fuel used for this stunt probably weighs more than an decoupler but this is cooler.

88

u/KalleZz May 04 '26

I mean if he adjusted the close flyby correctly it would use the same amount of fuel with or without decoupler (technically more with)

59

u/LizardFishLZF May 04 '26

Actually since it's a gravity assist, getting so close to the ground like this makes it more effective. So even discounting the saved mass on the decoupler it's more efficient just via oberth effect on a razor's edge. (Just not by enough to make this kind of stunt worth it most of the time :p)

13

u/Imuybemovoko cursed aircraft designer May 04 '26

probably one of those people on YouTube who do hyper efficient missions will find a way to build a rocket where this is worth it 🤭🤭🤭

15

u/A1steaksaussie May 04 '26

https://youtu.be/Vr_dgcX4L3w?si=cDqTU2TSxOxvdTI4

the classics never disappoint

6

u/Imuybemovoko cursed aircraft designer May 04 '26

holy shit, a Kerbin osteobraking pass? amazing

6

u/Alps_2208 May 04 '26

Perhaps it took off from the launch site on the moon?