Stuff That’s Hard to Do (Falcon9 KPLO SKorean lunar-orbiter)

Six launches today

This is a very cool but unusual mission
(Caution: light nerd-level flight mechanics without 3 and 4-body-problem math)
Flight-path overview
Mission details


  1. Igor
    Posted August 5, 2022 at 11:06 am |

    If *I* have to do 10th-order polynomials to do orbits, then YOU have to do 3rd- and 4th body problems.
    Don’t wimp out on us!!

  2. DougM (just entertaining myself here)
    Posted August 5, 2022 at 6:40 pm |

    Igor ^
    I haven’t done any orbital mechanics since the ’70s, and that was just simple, deterministic 2-body Earth-satellite stuff using a slide rule. Okay, back in grad school, we did an Earth-to-Moon example, but that was simplified by transitioning from 2-body Earth gravity to 2-body Moon gravity at the point in the flight where they were equal. This stuff, on the other hand, is… woo! [rubs temples]

    Next week: orbiting a Lagrange point a la Webb Space Telescope

  3. mech
    Posted August 8, 2022 at 8:42 am |

    KPLO says: “Hold my soju.”

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