I honestly can't tell is that is satire or an actual plan. Which tells you all you need to know about Arca. The copy of the Kerbal Advanced Grabbing Unit on top is a particularly nice touch.
Quote from: Welsh Dragon on 07/20/2022 11:02 pmI honestly can't tell is that is satire or an actual plan. Which tells you all you need to know about Arca. The copy of the Kerbal Advanced Grabbing Unit on top is a particularly nice touch. Have we figured out why they are so big on steam rockets?Did they get in trouble with some sort of propellant spill so just decided not to bother with combustion anymore?
Quote from: niwax on 07/20/2022 06:30 pmWhat about this was supposed to be Eco exactly? Assuming a 90% mass fraction, they're throwing away more aluminium per launch than other rockets use propellant.That's the best part, all of the cores used in the first two stages are reusable! Truly, their 96% reusable vehicle will be revolutionary! Insofar as its success would overthrow multiple laws of physics.
What about this was supposed to be Eco exactly? Assuming a 90% mass fraction, they're throwing away more aluminium per launch than other rockets use propellant.
I assume they don't have the technical capability to handle any cryogenics (so no LOX), and can't get access to anything more energetic than boiling water (yes, that includes hydrogen peroxide, which they also can't source in large enough quantities).
Maybe this thread should be better suited to the Space Entertainment thread in General Space.
Tim Dodd produced a pretty good video and article, but we definitely don’t agree with his approach based on numbers that are purposefully put forward and saying: “Yes, rockets do pollute, but the amount of pollutants emitted by the rockets is so tiny. This isn’t that bad. There are worse things in the world that pollute more.”We respectfully disagree with the way Tim defends this heavily polluting industry by putting forward numbers that makes the problem look insignificant. We understand that Tim’s followers are in their vast majority SpaceX’s fans and we respect this. We respect the company, Elon Musk, his achievements and his fans, and we respect Tim. But we can’t agree with his conclusions. Saying: “Yes, rockets pollute, but compared to other industries it isn’t that bad”, is fundamentally wrong. It creates a precedent to treat other polluting industries in similar ways. Where is the point at which the interest to reduce the polluting sources starts and where it ends? Why wouldn’t the aviation industry say the same about themselves? Tim is mentioning that: “CO2 emissions from the airline industry were only 2.4% of global CO2 emissions!!!”, meaning it is a small percentage. OK, then, if this is also small, probably we shouldn’t look into this either? It is a completely wrong and dangerous approach. The space industry is one of the leading technological areas of human civilisation, and an example of pollution reduction from this direction could become a leading example for many other human activities.
Scott Manley, a famous YouTube personality, tarnished the idea of the ecological rocket in a dedicated video that gathered half a million views. This affected us quite heavily, but this wasn’t the worst thing. Various venture capital investors who saw the video mentioned that they can’t invest in ARCA because the idea was trashed in the media, citing Scott Manley’s video. ARCA Space: AMi Exploration Program
Let’s consider the engineering marvel that is the SpaceX’s Starship/Super Heavy project, a reusable launch vehicle that is also using decades old technologies. It is a typical case of an innovative design concept that aim to a dramatic launch cost reduction, even if the technology is that old. But it has a problem: the huge development cost. As we saw, traditional technology is insanely expensive and using it today will do nothing more that perpetuate the culture of excessive costs for space technology. So, we are skeptical that we are going to see a radical launch cost reduction with the Starship/Super Heavy project, even if SpaceX is promoting this.
Quote from: catdlr on 07/21/2022 03:25 amMaybe this thread should be better suited to the Space Entertainment thread in General Space.QuoteIf you're suggesting that, then these guys would need to go first: https://forum.nasaspaceflight.com/index.php?topic=56168.0I know scam investment schemes are a joke, but it's hardly a fair comparison is it?I vote for a Comedy Space thread! Yes, or Fake Space thread
If you're suggesting that, then these guys would need to go first: https://forum.nasaspaceflight.com/index.php?topic=56168.0I know scam investment schemes are a joke, but it's hardly a fair comparison is it?I vote for a Comedy Space thread!
Quote from: CameronD on 07/21/2022 05:07 amQuote from: catdlr on 07/21/2022 03:25 amMaybe this thread should be better suited to the Space Entertainment thread in General Space.If you're suggesting that, then these guys would need to go first: https://forum.nasaspaceflight.com/index.php?topic=56168.0I know scam investment schemes are a joke, but it's hardly a fair comparison is it?I vote for a Comedy Space thread! Yes, or Fake Space thread
Quote from: catdlr on 07/21/2022 03:25 amMaybe this thread should be better suited to the Space Entertainment thread in General Space.If you're suggesting that, then these guys would need to go first: https://forum.nasaspaceflight.com/index.php?topic=56168.0I know scam investment schemes are a joke, but it's hardly a fair comparison is it?I vote for a Comedy Space thread!
Quote from: catdlr on 07/21/2022 05:22 amQuote from: CameronD on 07/21/2022 05:07 amQuote from: catdlr on 07/21/2022 03:25 amMaybe this thread should be better suited to the Space Entertainment thread in General Space.If you're suggesting that, then these guys would need to go first: https://forum.nasaspaceflight.com/index.php?topic=56168.0I know scam investment schemes are a joke, but it's hardly a fair comparison is it?I vote for a Comedy Space thread! Yes, or Fake Space thread Pseudo-Space?? (Until Demonstrated Otherwise..)After all, it's not really Paper Space.. that'd be the companion thread for the ones in this section of the forum that don't ever get off of the drawing board.
This video shows a typical AMi asteroid mining mission profile involving the EcoRocket Heavy and AMi Cargo.
I have every faith they will make their balloon launched rocket supersonic seaplane launched rocket steam powered rocket* work.*To be updated for next iteration.
Quote from: trimeta on 07/21/2022 12:11 amI assume they don't have the technical capability to handle any cryogenics (so no LOX), and can't get access to anything more energetic than boiling water (yes, that includes hydrogen peroxide, which they also can't source in large enough quantities).that begs the question of who is building their hardware then. if they can build the plumbing and pressure vessels needed to make these wacky steam rockets fly in a controlled manner they should be able to figure out propellant handling. it is just really weird, on one hand you have these steam rocket things and test stands that are reasonably well built even if they make no sense, on the other is a really odd choice not to use more conventional propellants. HTP is a bit odd too considering its handling challenges are in some respect worse than hypergols.
