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Dec 29, 2020 at 0:54 comment added user20636 I still say they're good at building rockets, but I recognise the ambiguity in that people might think I was saying the build good rockets... and the sarcasm about their boiler rocket didn't come through at all.
Dec 19, 2020 at 1:23 comment added uhoh @ChristopherJamesHuff speaking of big launch batteries Are LiPo batteries more suitable for 1st stage electric power than Li-ion batteries? is currently unanswered.
Dec 19, 2020 at 1:17 comment added uhoh @ChristopherJamesHuff I was totally disoriented for a moment! Where I live the internet ads are often game-related, so I thought that this was the leaky test stand i.sstatic.net/eBK87.jpg then the real video started and I still felt like I was looking at an animation. After a while the greater reality of what is (and isn't) being shown sunk in. Thanks!
Dec 19, 2020 at 1:06 comment added Christopher James Huff @uhoh here: youtu.be/IUE2v9mNgIQ?t=161
Dec 19, 2020 at 0:59 comment added uhoh @ChristopherJamesHuff is there video? :-)
Dec 19, 2020 at 0:57 comment added Christopher James Huff Building a lot of them hasn't made them good at building them. They can't even run their steam rocket above 1.85 bar (no, I didn't put the decimal in the wrong place) on the test stand because its tank leaks, and what comes out is a weak spray of steam and liquid water that barely makes the vehicle bounce in its suspending cables. They launch infrequently because their designs and fabrication are both incompetent.
Dec 18, 2020 at 18:31 comment added user20636 I think you mean ".... than they are at launching rockets" @ChristopherJamesHuff they've built quite a few.... But I'm sure their latest water boiling aerospike rocket will launch real soon now
Aug 9, 2019 at 22:35 comment added Christopher James Huff Stabilo did refer to passive stability due to use of tractor engines (with the claim that towing a mass on a cable magically made it work). They even named it the "Popescu-Diaconu stabilization method", and hyped it up quite a bit early on. They're better at getting investors to give them money than they are at building rockets.
Aug 9, 2019 at 20:40 history edited uhoh CC BY-SA 4.0
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Aug 9, 2019 at 20:36 comment added user2705196 Maybe it'd be better to phrase the question "how was X supposed to work?" rather then "how did X work?" given that it seems to have never actually launched.
Aug 9, 2019 at 15:06 comment added Russell Borogove The propellant tanks store peroxide, not steam. The decomposition occurs in the combustion chamber, and the exhaust won’t condense until it’s well out of the nozzle.
Aug 9, 2019 at 14:33 history edited uhoh
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Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://space.stackexchange.com/ with https://space.stackexchange.com/
Apr 2, 2017 at 15:52 comment added uhoh @OrganicMarble Yikes - isn't the engine just steam from Peroxide decomposition? So much for simplicity!
Apr 2, 2017 at 15:44 comment added Organic Marble From what I can tell none of the tests even lit the engine.
Apr 2, 2017 at 15:44 comment added uhoh @OrganicMarble do you mean the system failed in some way, or that the project ended without going anywhere further?
Apr 2, 2017 at 15:31 comment added Organic Marble I don't think it did work. They appear to have dropped this approach in favor of other speculative designs.
Apr 2, 2017 at 9:10 history edited uhoh CC BY-SA 3.0
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Apr 2, 2017 at 8:48 comment added Russell Borogove Thrust at the top doesn't give any stability advantage. en.wikipedia.org/wiki/Pendulum_rocket_fallacy space.stackexchange.com/questions/9682/…
Apr 2, 2017 at 8:38 history asked uhoh CC BY-SA 3.0