Comment on Launches

intensely_human@lemm.ee ⁨1⁩ ⁨month⁩ ago

• Anticorp@lemmy.world ⁨1⁩ ⁨month⁩ ago

  That’s an interesting question. A regular sail can sail into the wind, but they have a triangular sail, and a keel with water resistance. I don’t think any of those things exist in space, so I’m going to guess no. Perhaps some sort of high efficiency propellant keel could make it possible?

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  • Etterra@lemmy.world ⁨1⁩ ⁨month⁩ ago

    My intuition would say no, but to be honest, I don’t understand the physics of either solar or watercraft sails.

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    • Anticorp@lemmy.world ⁨1⁩ ⁨month⁩ ago

      As a certified small keelboat skipper, I understand watercraft sails. I think I understand solar sails, but not nearly as well. I know Stephen Hawking wanted to send a bunch of micro drones to Alpha Centauri using solar sails powered by on-board lasers. That seems like the whole fan on a boat pointed at a sail situation, which doesn’t work on earth, so maybe I don’t actually understand solar sails. I’m definitely not going to say that Stephen Motherfucking Hawking was wrong about his area of expertise.

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      • intensely_human@lemm.ee ⁨1⁩ ⁨month⁩ ago

        If it would work, it would be by stopping the angular momentum around the sun, then letting the sun’s gravity pull the object in.

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      • Westcoastdg@lemmy.ca ⁨1⁩ ⁨month⁩ ago

        This sounds incredibly legit, but question: Could you not gain a shit ton of momentum sailing directly with the wind in a regular boat, then drop your sails and steer into the direction of it to maintain some amount of velocity for an amount of time? Feels like the same principle could be applied here

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• mipadaitu@lemmy.world ⁨1⁩ ⁨month⁩ ago

  Yes, because of the way orbits work, you just need to add velocity horizontal to the orbit, which is just as easy going into the sun as out of it.

  So a solar sail is just as good both in and out of the sun.

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