Comment on Lmao

• lemmyman@lemmy.world ⁨2⁩ ⁨months⁩ ago

  Escape velocity does scale with (square root of) radius so its not a dumb thought.

  And I’m not a rocket surgeon but I could imagine earth rockets might be operating near some physical limits that make 50% (or whatever) infrasible.

  en.wikipedia.org/wiki/Escape_velocity

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  • Lojcs@piefed.social ⁨2⁩ ⁨months⁩ ago

    Wikipedia says energy = GMm/r.

    if g=GM/r²,
    energy = mgr, proportional to r given g is constant.

    PREVIEW_HERE

    My previous comment was wrong, I derivated while integrating.

    PREVIEW_HERE

    PREVIEW_HERE

    PREVIEW_HERE

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• expr@piefed.social ⁨2⁩ ⁨months⁩ ago

  I stated an assumption and was contributing to the conversation. Even if that assumption is incorrect, there’s no need to be a dick about it.

  It seems like a larger atmosphere would result in a longer duration exposed to atmospheric drag, thus requiring more fuel to overcome it.

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