• dactylotheca@suppo.fi
    link
    fedilink
    English
    arrow-up
    16
    ·
    4 months ago

    Shooting him into the sun would be a waste of delta-v. Shoot him out of the solar system.

      • dactylotheca@suppo.fi
        link
        fedilink
        English
        arrow-up
        4
        ·
        edit-2
        4 months ago

        Been a while since my Kerbal days when I read a bit about all this orbital mechanics crap and I remember that there was something counterintuitive about the delta-v required to hit the sun vs escape the solar system; I think compared to escaping, if you start from Earth you need almost 3x the delta-v to hit the sun, but I can’t remember why. Something to do with the huge gravity well, because it got worse the closer you are to the sun

        edit: lol I totally misread you, but also I found a video and duh yeah the reason was obvious: it’s because we’re moving around the sun at ~30km/s and to hit the sun you need to use that much delta-v to slow down to make your orbit tight enough to actually hit the sun instead of getting slingshotted / staying in orbit: https://youtu.be/LHvR1fRTW8g?si=1eIyeeqWR61wRu08. Escape velocity for the solar system is ~10km/s