• threelonmusketeers
    link
    fedilink
    English
    arrow-up
    1
    ·
    5 months ago

    The volume of shielding water needed is the difference between those two cylinders, or 22⋅π⋅2.752−20⋅π⋅1.752≈522.68−192.42=330.26m3. As one cubic meter of water weighs 1 metric ton (1,000kg), that’s 330,260kg to get into space

    Honestly, 330 tonnes doesn’t seem too unacheivable to me. That’s less than the mass of the ISS, which was built using much smaller rockets than are currently in development.