Comment on That's clever

Rudee@lemmy.ml ⁨1⁩ ⁨week⁩ ago

• IAmNorRealTakeYourMeds@lemmy.world ⁨1⁩ ⁨week⁩ ago

  the questions are the specific impulse of those engines, then Delta-V.

  a mentos and coke can reach about 3m height gayser, therefore initial nozzle velocity is 7.67m/s, and a 2l bottle lasts about 2 seconds. resulting in a ISP of 0.7822 seconds.

  for comparison, the shuttle solid rocket booster has an isp of 250 seconds, a normal liquid rocket engine is about 450 seconds (the more the better).

  plugging in the weights of the Saturn 1, gives a delta V of [drumroll] 18.6 m/s… enough to accelerate a giant rocket to highway speeds.

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  • auzy1@lemmy.world ⁨1⁩ ⁨week⁩ ago

    Also, there would be ants everywhere in the vicinity after

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    • IAmNorRealTakeYourMeds@lemmy.world ⁨1⁩ ⁨week⁩ ago

      that’s a plus, they’re cute

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  • ivanafterall@lemmy.world ⁨1⁩ ⁨week⁩ ago

    Fine, be that way. Maybe we can use it for the little psshhh pshh boosters they use in space on the spacesuits, etc.

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    • IAmNorRealTakeYourMeds@lemmy.world ⁨1⁩ ⁨week⁩ ago

      ok. but you can only maneuver 3 times before we run out of coke

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