• rmuk@feddit.uk
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    4 days ago

    It seems crazy that a company that’s only really known for cars, motorbikes, tuning forks, heat pumps, brake pads, pens, tractors, fertilizer, display panels, outboard motors, pneumatic systems, oil tankers, furniture, locomotives, bricks, solar panels, ATVs, generators, hot air balloons, dinghies, hydrogen fuel cells, submarines, crop dusters, jet engines, cultivators, hedge trimmers, lawnmowers, precision optics and robots would suddenly pivot to rockets.

  • ThePantser@sh.itjust.works
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    4 days ago

    This is the first I have heard they were doing this. Makes spacex accomplishments less impressive. Fuck elon

    • Cocodapuf@lemmy.world
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      4 days ago

      Um, no it doesn’t… At all…

      This is a first step landing test, not even suborbital, it flew to a height of 300 meters. This is the point that SpaceX was at in 2011 with their grasshopper rocket.

      SpaceX is regularly landing orbital hardware and working on a fully reusable rocket with a greater lifting capacity than anything else ever. It’s not really the same…

      But fuck Elon, no argument there.

    • NotMyOldRedditName@lemmy.world
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      4 days ago

      Up and down isn’t a hard problem in the grand scheme of things. It’s expensive and doesn’t offer much benefit which is why people generally haven’t bothered.

      Going up and over at orbital velocities and coming back is the hard part, and none of these new spaces companies have done that successfully yet, and SpaceX has now done it with 2 vehicles and reused them both.

      New Glenn from Blue Orgin might be the first after SpaceX but it blew up coming back on their first attempt, but it’s been designed to be orbital and reusable

      • untakenusername@sh.itjust.works
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        4 days ago

        probably

        no one in the private sector was gonna take that kind of risk for a while and then SpaceX took the gamble, won and now tons of players see vertical landing of rockets works so their all looking into it.

  • MystikIncarnate@lemmy.ca
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    4 days ago

    Honda built a rocket

    Me: of course they did.

    They launched the rocket

    Me: naturally.

    They landed the rocket.

    Me: on the first try?

  • Buffalox@lemmy.world
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    3 days ago

    This wasn’t much more than a toy rocket:

    6.3 m in length, 85 cm in diameter,
    The test was completed successfully, the first time Honda landed a rocket after reaching an altitude of nearly 300 meters.

    But still they were successful on their first try, so we will have to see where they take it from here. 🚀

    • Sturgist@lemmy.ca
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      3 days ago

      It’s proof of tech. It’d be stupid and wasteful to do all the tests on a full size rocket.

      • Buffalox@lemmy.world
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        3 days ago

        Whatever they tested it’s probably proof of that, but such a small rocket and only 300 meters means that a lot of things were not really proven, because scale is a HUGE issue.
        Just ask Elon Musk / SpaceX, the Falcon rocket is fine, but Starship is horrible. And the difference is scale.

        • buddascrayon@lemmy.world
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          3 days ago

          That is not why starship fails. Starship fails because like everything that Elon does lately it emphasizes style over practicality. Starship is a very badly designed rocket that looks cool to Elon. Not unlike the Cyber truck which has been an abject failure in every way possible.

          • NewSocialWhoDis@lemm.ee
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            2 days ago

            My personal opinion is that it fails because SpaceX, like a lot of space startups, embrace a silicon valley coding mindset of ‘move fast and break things’, which results in them spending much more of their time and effort on testing than on design. Make a change, test, make a subsequent change, test. It gets them to a working prototype more quickly than legacy space/ defense companies. However, there’s no emphasis on modeling or design, which is problematic for solving complex problems that haven’t been solved for 50 years already.

          • Buffalox@lemmy.world
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            3 days ago

            You are missing the point that size makes a difference. Obviously SpaceX has the technology to do what Honda did, but SpaceX can do ti with a real rocket.
            But they can’t do it with the bigger Starship rocket. Scale matters.

            • buddascrayon@lemmy.world
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              3 days ago

              And when SpaceX does it with real full size rockets and they explode scattering debris and chemicals everywhere, the nearby towns pay the price.

              I don’t see any towns being decimated by Honda’s approach.

              • Buffalox@lemmy.world
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                3 days ago

                I am ABSOLUTELY not praising SpaceX, I’m just using them as an example of how scale makes all the difference at least for some of the components. And being able to launch a small rocket is evidence they can launch a big one too.

            • dustyData@lemmy.world
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              3 days ago

              Size is only a proof of logistics. Not tech. Physics don’t change fundamentally between 6 meters and 120 meters. You learn a lot from scale modeling without the added costs. Starship’s real challenge is actually the logistics necessary to fulfill the desired specifications and experimenting with engineering to reach the scale. The most innovative aspect of Starship would be orbital refueling, and they aren’t there since the thing hasn’t reached orbit yet. SpaceX problem right now is insisting on high turnover engineering, which doesn’t work at scale without heavy costs, because it is a logistic problem, not a engineering problem.

              • GamingChairModel@lemmy.world
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                3 days ago

                Physics don’t change fundamentally between 6 meters and 120 meters

                Yes it does. Mass to strength ratio of structural components changes with scale. So does the thrust to mass ratio of a rocket and its fuel. So does heat dissipation (affected by ratio of surface area to mass).

                And I don’t know shit about fluid dynamics, but I’m skeptical that things scale cleanly, either.

                Scaling upward will encounter challenges not apparent at small sizes. That goes for everything from engineering bridges to buildings to cars to boats to aircraft to spacecraft.

  • 0x0@lemmy.zip
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    3 days ago

    Honda giving a whole new meaning to crotch rocket.
    Oh wait, it’s an actual rocket!

  • NocturnalMorning@lemmy.world
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    4 days ago

    Since when is Honda a rocket company? This is literally the first im hearing about this. They kept this quiet for a while, and im not sure why.

    • minkymunkey_7_7@lemmy.world
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      4 days ago

      It’s new. Honda Space Development Division.

      Honda R&D to Conduct Testing with Sierra Space and Tec-Masters on the International Space Station | Honda Global Corporate Website https://share.google/3CwIsYUh8eWsohht4

      A lot of the global conglomerate Asian based companies do R&D across many fields, rather than just the product they’re most know for. Toshiba makes nuclear reactors! Samsung has phones and sewing machines and microchips… and nuclear reactors research.

      • NocturnalMorning@lemmy.world
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        4 days ago

        Good for them, Asia is getting their rocket programs in order while the U.S. tries their best to destroy ours. Man i wish I could move.

  • Kindness is Punk@lemmy.ca
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    4 days ago

    And Hyundai is making hydrogen powered tanks, what a world. I wonder if hydrogen fuels poses any unique risks as compared to petrol.

    • JuxtaposedJaguar@lemmy.ml
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      I wonder if hydrogen fuels poses any unique risks as compared to petrol.

      It’s highly explosive.

        • Cocodapuf@lemmy.world
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          3 days ago

          Well, different. You’d have highly compressed hydrogen in a cylindrical pressure vessel.

          The Hindenburg just burned, actually it was mostly its highly flammable paint that caught fire. When a pressure vessel is ruptured, it explodes in a big way, or it quickly removes itself from the vehicle like a mini rocket.

        • Jrockwar@feddit.uk
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          4 days ago

          In different ways. For example, it’s very rare for a car to explode in a collision, other than in movies.

          One of the reasons that make hydrogen difficult to work with in this sense is that hydrogen (H₂) molecules are so small that they can permeate most materials, such as steel. Then it can get somewhat easily to wherever there is a spark, and chaos ensues. Annoyingly you don’t even need 100% Hydrogen for that to happen, as it can ignite with a concentration of just 4%.

          After we stopped using Hydrogen mostly as a consequence of Hindenburg’s accident, it’s taken years to perfect hydrogen fuel cells to a safety standard that can be used in cars. As far as I know, its use has been limited to rockets/space propulsion otherwise (where you can just throw millions at the problem to make it safer).

          • xavier666@lemm.ee
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            4 days ago

            (H₂) molecules are so small that they can permeate most materials, such as steel

            Okay, I knew from texts books that H2 is small but I never thought of the real-life consequences of it being so small. Then theoretically, Helium should also be “leaky”, right?

            • MysteriousSophon21@lemmy.world
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              4 days ago

              Yep, helium is even worse for leaking! It’s actually the smallest noble gas and can escape through tiny pores that even hydrogen can’t fit through. Thats why helium balloons deflate faster than air balloons - the atoms literally seep through the balloon material.

              • stephen01king@lemmy.zip
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                3 days ago

                How does Helium fit through places that Hydrogen can’t even though its bigger? Is it because Hydrogen would react with things along the way while Helium won’t?

        • SupraMario@lemmy.world
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          4 days ago

          At the end of the day, making EV cars isn’t either unfortunately…but in the grand scheme of things. Both hydrogen and EV cars are more environmentally friendly than gas powered cars.

          • MystikIncarnate@lemmy.ca
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            4 days ago

            Manufacturing of any kind always causes an environmental impact. This is the way of things.

            The one thing we can’t get that would mitigate the environmental costs of making stuff, is if stuff was built to last…

  • skisnow@lemmy.ca
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    3 days ago

    The Top Gear Reliant Robin launch reached 3000ft / 900m, although they were unable to stick the landing.