• AA5B@lemmy.world
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    3 hours ago

    But it goes both ways. Starship is about jump starting a much larger space economy, but it also requires a much larger space economy.

    Falcon 9 is sufficient for today’s space economy. It already carries 80% by mass of the worlds launches. As the economy gradually grows, it’s easy to see it increment to keep pace, or other companies/countries growing into bigger shares. In this world, starship is a waste of time and money.

    But if we get that paradigm shift, suddenly starship is at the center

    • Cocodapuf@lemmy.world
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      2 hours ago

      but it also requires a much larger space economy.

      In this world, starship is a waste of time and money.

      Well I don’t think I agree with these statements at all. The thing is, if/when they get starship to work, not only will it be able to lift significantly more mass to orbit than the falcon 9, it will likely be cheaper per launch. Not cheaper per kg to orbit, but cheaper overall than launching a falcon 9 (remember, they need to build a new falcon second stage for each launch). That is such a significant improvement that I’d argue that its development is totally worthwhile even if the demand for launches were to stay stagnant.

      And honestly, we definitely need some heavy lift rocket. The Saturn V doesn’t exist anymore and the SLS is… economically unrealistic.

      • AA5B@lemmy.world
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        2 hours ago

        Yes but remember there is not currently much that needs that large of a rocket, and you get diminishing returns on rideshare. Major satellites are still likely to need private launches and there’s no point in buying a bigger launching you need.

        Large rockets are currently needed

        • for space stations - a handful of times total
        • manned missions to moon/mars, a few times
        • a constellation like Starlink can take more advantage of rideshare

        Current space economy has a use for maybe half a dozen launches per year. All that money developing re-use, building multiple launches per sites, a lot of the basic technology, is a waste, if that’s all we need.

        Making back that excessive development cost, achieving that low launch price, entirely depends on there being sufficient market to launch many times per year. It’ll be revolutionary for sure, but only if

        They’ve designed and built for scale, which will be amazing when it happens, but only if we scale dramatically.

        • Cocodapuf@lemmy.world
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          1 hour ago

          I hear you that such a large rocket is not “needed” very often, but it can still be used. I believe the plan is to ramp down falcon 9 production and go to starship launches for everything, even smaller payloads, simply because it’s cheaper and more sustainable. As long as they launch regularly, the price should still be lower than falcon 9. And at least on paper, it is more sustainable, burning methane results in cleaner exhaust than burning kerosene, the only major exhaust products are CO2 and water. And not letting an upper stage burn up or fall into the ocean is an ecological plus too.