SpaceX’s Starship rocket system reached several milestones in its second test flight before the rocket booster and spacecraft exploded over the Gulf of Mexico.

  • Buffaloaf@lemmy.world
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    1 year ago

    I really wish they’d stop putting Musk’s name on things like this. He didn’t design the engines, he didn’t plan the flight path, he did nothing but throw a bunch of money at a company because he’s obsessed with Mars.

  • peopleproblems@lemmy.world
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    1 year ago

    Alright, let me clear something up.

    This is literally rocket science. The process to put humans into space is literally done this way, for this exact reason. They had two key primary objectives for this launch:

    1. Successful ignition and control of 33 raptor engines in first stage.
    2. Successful hot separation into second stage.

    The first stage separated entirely and gained plenty of distance before it did explode.

    The second stage flew for several minutes before the automated emergency flight termination kicked in and destroyed it.

    All of the data that they were recording will pinpoint the failures in the return of the first stage, and the destruction in the second stage. They would not have that data if they did not do this test and nothing went wrong.

    • Eheran@lemmy.world
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      1 year ago

      All of the data that they were recording will pinpoint the failures

      Do they need data like last time with the launch pad? Where it was clear that it will desintegrate? Did that give them additional insights into how the engines react to debris doing back into them? Was that the goal all along?

      Seriously, they are iterating, sure. But we already know they ignore known problems. So it is not like every explosion is necessary or helps in any way.

      • desconectado@lemm.ee
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        1 year ago

        I’m not a rocket scientist, but I research complex systems. Failure is the best way to improve something, even if you know it’s going to fail, you want to see how and what are the repercussions. I’ve done so many experiments that I knew were doomed, but I still have to do them just because I wanted to see how the system is would react.

        Not a fan boy of Elon by the way, not trying to defend him or anything.

        • Eheran@lemmy.world
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          1 year ago

          That was really non of that. It was predictable that and how it would fail. NASA etc. solved that issue decades ago. It also created new issues, like the (protected) water table being affected. All because he wanted a certain date and cheap out.

    • MeanEYE@lemmy.world
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      1 year ago

      Primary objective was things not to explode, which they did. Everything else you just said was repeated PR. Yes, it was a success, they wanted to throw hundreds of millions for no reason. More to the point, second stage blew up in low earth orbit, which is within reach of satellites. So your so called success is yet to be proven. It’s going to be weeks and months before we see the real effect of explosion propelled debris around the planet.

      • Player2@sopuli.xyz
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        1 year ago

        Primary objective was to get further than last time, which they absolutely did. Not only were all the engines reliable for their first burn, they tested a successful hot separation, in flight ignition, and effective flight termination system. All of this was on top of the achievements they made last time and allowed Starship to reach space for the first time, making it reach past the N1 in only two attempts.

        It was a great success.

        PS. No it did not explode in orbit. The actual rocket scientists did think about this you know. The flight plan featured a suborbital track, and it splashed down safely in the ocean somewhere along it’s predicted path at most about an hour after launch.

        • MeanEYE@lemmy.world
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          1 year ago

          Great success would be landing it. Exploding and ramming the rest of the wreckage in ocean is not a success, but I guess Musk fans will repeat everything verbatim. If someone drives a car through your house but jumps out just before it smashes. Them claiming it was a great success, initial goal was to get the car moving… hardly constitutes a success to you, does it?

          • Player2@sopuli.xyz
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            1 year ago

            You’re either a malicious troll or completely uninformed. A landing sequence was never planned for this test nor the one before it. Even if they met all their stretch goals, both stages would have crashed into the ocean, just in a different location from what ended up happening. The goals haven’t changed, you just assumed that they were something they were not.

            • figaro@lemdro.id
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              1 year ago

              People here are conflating progress with space flight with Elon musk. Like yeah Elon musk sucks, but frankly, progress in space flight is cool. It is a good thing that space x exists because it is on one of the frontiers of science.

              As for this flight, like yeah of course it would be cool if they could just know that their designs would work on the first flight up, but that’s not how science works. This was a test. They learned from the test. Next time they will improve and make more progress.

              One day that progress will take us to Mars. That is cool not because musk wants to go to Mars - it is cool because humans going to Mars is freakin amazing and an incredible achievement.

            • MeanEYE@lemmy.world
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              1 year ago

              Oooh, so those are called stretch goals now. Good to know. So anything you don’t manage to do you just call stretch goals. Noted.

    • MumboJumbo@lemmy.world
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      1 year ago

      Actually kinda really successful 👍 All 33 engines were firing, the hot staging was successful. On both the first and second stages, it looks like the automatic FTS (flight termination system) was triggered. That would happen if it veered too far off of it’s approved flight path (don’t need it coming down over a populated region.) The only thing that didn’t happen that I was hopeful for was atmospheric re-entry - we really need to see how that heat shield works in practice.

      • urandom@lemmy.world
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        1 year ago

        If the stage exploded due to the hot staging change, perhaps it won’t count as a success. But it’s too early to tell either way

        • Pennomi@lemmy.world
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          1 year ago

          Looked to me like the hot staging plus flip maneuver sent the 1st stage into a slow spin it couldn’t recover from using the ullage gas thrusters.

          • MumboJumbo@lemmy.world
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            1 year ago

            A user in another thread pointed out that during relight, not all engines lit, and the ones that did started going back out.

            • Thrashy@lemmy.world
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              1 year ago

              Scott Manley suggested the hot-stage combined with the fast flip maneuver may have caused fuel to slosh away from the intakes in the tank, leading to ingestion of gas bubbles in the fuel lines. Those would have damaged or destroyed engines as they worked their way into the turbo pumps, leading to the progressive engine-outs seen on the stream before the eventual catastrophic failure of the booster.

            • Peppycito@sh.itjust.works
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              1 year ago

              I’m guessing they wanted to show the FTS works really good now and terminates at the first sign of something wrong. Last time it was doing those flips for quite a while.

      • llamacoffee@lemmy.world
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        1 year ago

        It blew up about 3000 km/hr short of orbit, so thankfully all of it has burned up in Earth’s atmosphere already :)

    • themeatbridge@lemmy.world
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      1 year ago

      The launch achieved most of its objectives, but it was supposed to fly farther and splash down near Hawaii. It was a success in that the 32 engines fired together, and the ship achieved separation, and there will be plenty of data about what went wrong.

      But some things did go wrong, so you can’t say it was an “absolute” success. Both the superheavy and the starship were lost. Rocket science is slow and expensive progress. It’s only a failure if we abandon the project. But it is disingenuous to say that everything worked out as intended.

  • Vakbrain@lemmy.dbzer0.com
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    1 year ago

    There’s no shame in highlighting what went right and still acknowledging what went terribly wrong.

    Censoring the latter prevents improvements. No need for fanboyism.

    • ashok36@lemmy.world
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      1 year ago

      On test flights, having something go terribly wrong is expected. This is the second test flight of a brand new vehicle system which also happens to be the largest and most complicated vehicle ever made. They also have half a dozen more vehicles already made and waiting to fly, each with improvements learned in manufacturing the previous one. They are behind their original schedule, for sure, but this mission was a huge success for SpaceX considering all of the things that did work.

  • dumdum666@kbin.social
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    1 year ago

    It weirds me out how many people want to get a brain implant done by a company of this guy

  • pan_troglodytes@programming.dev
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    1 year ago

    eh… it looks like hot-staging still has some bugs to work out, but the 2nd stage worked just fine (and since that’s the part that matters, the end fate of the first stage is irrelevant)

    good test all in all

    • neveraskedforthis@lemmy.world
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      1 year ago

      What bugs? At this point we don’t have an explanation for the first-stage RUD, looking at the overlay it seems there were issues re-lighting the Raptors which could be for any reason.

      From what I saw, the hot-staging went perfectly with the RUD happening when the ship was already in space.

  • iterable@sh.itjust.works
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    1 year ago

    I wonder what the simulation showed was going to happen compared to the actual flight. Would give you a real metric of progress.