Comment by pictureofabear

15 hours ago

An error in any of the orbital math may have seen them flung out into space with no chance of recovery.

Orbits do not work that way

  • The craft has aerodynamics and speed. It might be figuratively true "unrecoverable" but if it takes e.g. 2 weeks to complete a return, their oxygen and food and batteries ran out. Alternatively if it enters too fast they return ... in pieces.

    I think you're being a pedant, if your point is a grazing entry causing rebound skip ultimately returns to some orbital path downward.

    • You seem to intentionally be ignoring the original quote that any error may have caused them to be flung into space. This is patently false unless the one math error is pumping in hundreds of pounds more propellant and burning far longer than the scheduled burns. NASA would need to make a significant series of mistakes beyond orbital math for the "flung out into space" statement to be true.

      They certainly could've gotten the return wrong but with a perigee of 119 miles they arent even in a stable orbit and likely could deorbit themselves using only rcs thrusters at apogee, or by just waiting a few orbits.

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  • Anyone who has had hit period key once too many during Munar free-return in KSP knows it's exactly how orbits work...

  • Hilarious the the intellectual forum downvoted you for being absolutely right.

    Artemis II never escaped Earth’s pull.

    That video that NASA put out where the craft did a sling shop around the moon is extremely deceptive. The pull of the moon had very little effect.

    If they had missed, they would have eventually crashed back to earth in the worst case, and best case just re-adjusted and returned a little bummed.

    • > The pull of the moon had very little effect.

      No, it had a very significant effect: it's what made possible the free return trajectory while observing the far side of the moon.

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