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Carmack's Throatless Rocket Engine

Baldrson writes "John Carmack is working a potentially disruptive technology: A throatless rocket engine. Its made from plain aluminum pipes with few machined fittings. Carmack says: "The great thing about these engines is that it only takes me two nights to machine the parts, so we can test two engines a week if necessary." It scales too: "If this line of tube engine development works out, we can make a 5,000 lbf engine with very little more effort than the test engine." This is what makes disruptive technology development work: Cheap, fast turnaround on on redesign producing technologies that scale. If this works, the NASCAR guys may really start entering space competitions like the X-Cup."

7 of 351 comments (clear)

  1. just great... by teh_mykel · · Score: -1, Troll

    oh great, just what we need: more amatures building shit we dont need :/

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  2. There's a lot more to a rocket engine... by SCHecklerX · · Score: -1, Troll

    ...than building it. How about the nozzle designs? Unless Carmack is properly matching a nozzle to the back pressure generated by his engine such that the shock wave is optimal (at the nozzle exit), I'm not impressed. If you have shock waves inside the nozzle or if you blow the shock out the end, you are losing energy, and potentially wrecking equipment.

  3. Re:Obscure unit by Gerad · · Score: -1, Troll

    If North America is so backwards, why are you wastisng your time trolling on a North American news site?

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  4. Re:Oh no!!! by sgant · · Score: 0, Troll

    the NASCAR guys may really start entering space competitions like the X-Cup.

    So you mean rednecks named Cooter are gonna be going into space?

    Yeah, I have no idea about NASCAR and just preying on stereotypes...so sue me.

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  5. Re:Obscure unit by drsquare · · Score: 0, Troll

    You're saying that America has more roads than Europe? I very much doubt that, most of America is open wasteland.

  6. Yay, ASSCAR in Space by Listen+Up · · Score: -1, Troll

    Yeah, ASSCAR in Space. How fucking boring. Let's watch a bunch of ignorant rednecks fly around in circles in space. The only bonus would be that once they crash into each other, maybe some other them would actually get jettisoned out into space forever never to be seen again.

    Of course, ignorant rednecks making it into Space is highly unlikely anyways. They will be too busy trying to convince people in Kansas that creationism is real.

    Of course, by the time Space racing becomes a reality, IRL (Indy) be have replaced ASSCAR anyways, since Indy is what ASSCAR always wishing it could be. And Formula One will still have a cloned version of Michael Shumacher racing to a win every time.

    In the future of space racing, my heart will still be with the one true motorsport...Rally. Except, instead of WRC, it will be SSRC or GRC. That would kick ass.

  7. Re:He'd best watch his back by snorklewacker · · Score: 0, Troll

    That's fine, because the president can just make shit up.

    Get a sense of humor, asshole.

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