

AckSed
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I did notice they just lowered it on, with the arms making small adjustments to set it down near-exactly. Checking to see what the damage was?
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The ESA stream for Axiom-3's splashdown shows how they egress the Dragon capsule after landing and being winched aboard: there's a little slide! I never knew the seats rotate down for landing and egress, either. Further, there's space for 3-4 people to assist the astronauts.
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It came out in 1982. So, let's see: https://oldcomputers.net/grid1101.html So it was basic, but out-of-the-box it had BASIC and spreadsheet, and graphing software, and a personal database. You could autocomplete commands by using the CODE key. It could connect to GENIE over POTS thanks to its built-in 300/1200 baud modem. It had a bright EL screen, 256K bytes DRAM, 384K bytes bubble memory, an arithmetic co-processor. It was 4.6kg mass and a briefcase form-factor, when IBM's later 5155 Portable was a 13.6kg monster the size and weight of a sewing machine. Later it would gain a DOS 3.0 ROM, and an integral floppy drive, allowing it to run Visicalc and Lotus 1-2-3. So when the engineer who worked there and later started Palm Computing states that that was the original reason it didn't take off with businessmen, I think that was what was said to them at the time.
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Wait a sec... Bennu's samples have a crust of phosphates. Asteroids like Bennu make up a large proportion of all asteroids. And Earth's atmosphere is under bombardment all the time from meteorites and micro-meteorites. How much phosphorous is deposited on Earth yearly by these? It's probably miniscule, but over a million years? Two? Fifty? How did almost all mammalian and reptilian life on Earth come to have biological scaffolds utilising phosphates?
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It's about time. Good to see flight hardware.
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One of the first laptops, the GRiD Compass, was unpopular with the businessmen it was aimed at because typing scared them: Of course, it then went on to be a military darling (hence why it's in Aliens: Extended Cut as the sentry gun controller) and flew on the Shuttle. So they made out alright, despite it costing over $8100 at launch.
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Five percent of Roman/Greek scroll burned in the eruption of Vesuvius is finally read... and it's a treatise on the philosophy of pleasure: https://scrollprize.org/grandprize Hopefully coming soon, the rest of it, as well as 600 other scrolls they also found. And there are almost certainly be more to be excavated. Edit: this is also a good description of how to run a project like this.
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Dream Chaser has passed its vibration testing: https://phys.org/news/2024-02-rattle-chaser-spaceplane-vibration.html
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For Questions That Don't Merit Their Own Thread
AckSed replied to Skyler4856's topic in Science & Spaceflight
My limited search-fu wants to find the results of research conducted on Skylab, specifically the M553 sphere-forming and M555 GaAs semiconductor crystal growth experiments run in the M512 Materials Processing Facility. I'd also like to see the results from the M518 Multipurpose Electric Furnace System. Lots of stuff that could and should be dug out again in this up-and-coming era of heavy lift. I found the '73 guidebook detailing what was going up, which let me narrow down the names, but nothing afterwards. Does anyone have leads? -
Made of steel, built in the open air by welders in hardhats... Robert Truax would appreciate it. Huh, expendable Starship currently matches half the proposed Sea Dragon, in potentially lofting 250 metric tons of mass to LEO.
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Towerless vertical-axis wind turbine that replaces the traditional rigid tower with pre-stressed blades and tensioned centre supports could make energy from offshore wind as cheap as $55/MWh: https://energy.sandia.gov/programs/renewable-energy/wind-power/offshore-design-optimization/arcus tl;dr only 18% of offshore wind farm cost is in the actual physical structure. If you make it lighter (over 50%) and easier to install (vertical-axis turbines can use simpler floating anchorings and can be towed, fully-assembled, from port), costs plummet. You can also use a larger generator in a housing on the base to capture more energy.
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Northrop Grumman Innovation Systems (Orbital ATK) thread
AckSed replied to tater's topic in Science & Spaceflight
Speaking of robotic arms, this was part of the cargo: -
For Questions That Don't Merit Their Own Thread
AckSed replied to Skyler4856's topic in Science & Spaceflight
They don't have to be on the main body at all: https://en.wikipedia.org/wiki/Blohm_%26_Voss_BV_141 Yes, this flew. -
Survey about Mars to gather ideas for a world
AckSed replied to SunlitZelkova's topic in Science & Spaceflight
I answered 'Yes' because although I think you can go to Mars in one shot, the advantage of building the Mars infrastructure on Luna means you can have practice with pressure vessels, partial gravity, life-support, ISRU, learning to mine in space-suits... Plus, the energy needed to lift, say, a spacecraft off the Moon is much smaller, and can use ISRU propellant e.g. aluminium/oxygen. -
After one payload specialist on the Shuttle said if his experiment didn't work he "wasn't coming home", commanders began locking the hatch: https://arstechnica.com/space/2024/01/solving-a-nasa-mystery-why-did-space-shuttle-commanders-lock-the-hatch/ Key takeaways here: The Shuttle's hatch doubled as an escape system, and so it could be opened with a single lever. That it still worked while the crew were in orbit, and would have spaced the whole crew if opened, is alarming to say the least. 'Do not do this thing' is only mostly fine when everyone has the same level of training. Screening everyone for "the right stuff" will not be feasible with greater access to space. Mental health in a high-stress environment must be addressed yesterday. Designing safety systems to be safe when someone panics is damn hard.
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JAXA (& other Japanese) Launch and Discussion Thread
AckSed replied to tater's topic in Science & Spaceflight
It had an unique landing pattern, so maybe it's on its side? https://arstechnica.com/space/2024/01/japans-moon-sniper-mission-aims-for-precise-lunar-landing/ -
CalTech's space-based solar power experiments satellite concludes its mission: https://www.caltech.edu/about/news/space-solar-power-project-ends-first-in-space-mission-with-successes-and-lessons Short version: the deployable ultralight structure had some new glitches that needed some figuring out so it could deploy, the wireless power transfer degraded a bit and non-space-rated gallium arsenide solar cells are surprisingly consistent. It's all good data. Side note: I prick my ears up every time I hear about Momentus' MET water thrusters on their tugs, as it's a key technology for the Spacecoach water-fuelled low-cost spacecraft concept.
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Chinese Space Program (CNSA) & Ch. commercial launch and discussion
AckSed replied to tater's topic in Science & Spaceflight
Says not, so it really is a 3-and-a-half stage. -
Chinese Space Program (CNSA) & Ch. commercial launch and discussion
AckSed replied to tater's topic in Science & Spaceflight
More on that super-deformed rocket. It's called the Gravity-1 and is a 3-and-a-half stage solid rocket constellation launcher with an optional kerelox kick stage. It's capable of "5-6 tons" of lift, though I didn't catch any mention of the orbit. Their price to orbit is "$5000-$6000 dollars per kilogram" and they are targeting launches within 5 hours. Honestly, this seems like a successful implementation of the same impulse (pun not intended) that led to Space Services Inc's Percheron turning into Conestoga. The difference here is they have a great deal more support, experience and in-production hardware to draw on. -
A lot of paddling beneath the majestic swan, got it. Even cooler! I find it fascinating that the removal tool, though it's made of a special grade of steel, is similar to an obscure hand-tool that used the pressure from a screwthread to drill through steel... and it uses a quarter-inch Stanley socket.
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Just look at the stupendous precision of OSIRIS-APEX's interception orbit. Just... look at it: Side question: how's opening the capsule going?