Thanks to ebay and my fabulously lean bank account, I have recently procured a number of items of potential interest:
“NASA Earth Orbital Space Station,” a poster-sized lithograph from McDonnell Douglas depicting a space station that tumbles for artificial-G.
“Re-Entry Payload Launch Vehicle,” A *brief* General Dynamics presentation on a vehicle to launch re-entry vehicles such as MIRV warhead shapes
“Proposed Development Program on Rocket-Type Missiles,” a 1948 Convair report on early ballistic/boost glide missile concepts, that would lead to Atlas. Includes some fantastic large format layout diagrams.
“Detail Specification for Consolidated Vultee Model 117 Airplane Class VR Transport Flying Boat,” August 1950, all the details on the then-brand new Tradewind.
“Detail Specification for Class VP Long Range Patrol Seaplane,” Consolidated Vultee 1946, all the details on a proposed flying boat patrol/bomber
32 issues of “Astronautics” magazine from 1957 to 1969, mostly 57-59 and 63 or so.
The lithograph and the reports will be scanned and put forward for consideration for monthly rewards; the magazines will have the interesting bits scanned and made available to the subscribers/patrons.
Here’s something you don’t see too often… someone firing *numerous* rounds from a Gyrojet. Each of these .45 caliber rounds are solid propellant rocket units, last manufactured in the 70’s or so. They apparently run about $200 *each,* which makes me wonder if there might be a market for newly manufactured ammo. As a practical home defense, police or military weapon… the Gyrojet basically wasn’t. It took something like 50 feet for the round to reach maximum velocity, which means at close range it might just bounce off an opponent. But as a range toy they might be fun, especially if the cost per round could be dropped substantially. And there’s no reason why it can’t… sure, each round is more complex than an equivalent conventional bullet, but they are just some basic parts with 1960’s rocket propellant. And that last could doubtless be improved; better propellant, better grain design and better manufacturing of the nozzle plate could *really* boost performance.
The claim is made here that the Gyrojet was designed to be used in space because they were uncertain if conventional gunpowder firearms would work in a vacuum. This is untrue; nobody with the least bit of understanding of the chemistry of gunpowder and how guns work thinks that guns *won’t* work in space. However, conventional firearms do have three major issues for space applications:
Recoil.
Thermal issues: exposure to sunlight and vacuum means that small metal devices like guns heat up *fast.*
Vacuum issues: grease, gun oil and the like boil off quick, meaning they can’t be used in space.
The Gyrojet has far lower recoil than conventional firearms. And the Gyrojet is a far simpler mechanism, made largely from stamped metal sheet to far lower specifications. This means it can heat up without jamming, with virtually no need for lubricants. So the Gyrojet seems like it’d make a dandy sidearm for the USSF. Bump it up to .75 caliber and you have yourself a light bolter. And perhaps best: home manufacture of Gyrojets would be *easy.* A 3D printed Gyrojet, with some *basic* metal parts, would not only be easy to make, but with vastly lower forces imparted on it than a conventional firearm, it’d be far less likely to explode.
So… where are the new-manufacture Gyrojet rounds? At $200 a round for the vintage stuff, you can start off *real* expensive and still undercut the current market.
It’s in their online catalog, but currently unavailable. I guess they sold out. A pity… there are a few points in the timeline I’d like to go back to to correct. Or at least get a few photos and videos of.
Since I live in the horribly, hilariously politically corrupt state of Illinois, “voting” is something that on one hand, doesn’t really count, and on the other hand, you can do as often as you like. So voting for a guy running for Congress in Texas, for the equivalent seat from Illinois? Sure, why not. Perhaps some of the people who facilitated Gropey Joe’s “win” in 2020 can be persuaded to use their talents to convert votes for Herrera in Texas into votes for Herrera in Illinois. Heck, maybe they can install him not only as an Illinois Congressman, but an Illinois State Supreme Court Justice and also Governor.
Recently acquired at some cost, and finally fully scanned at some effort, is this 1965 “Master Plan” for Kennedy Space Center. It’s basically a book of maps of the region showing all aspect of the infrastructure. It’s in good shape and was scanned at 600 DPI rather than the usual 300, due to the fine quality of the maps. It will be in the next catalog for Patrons and Subscribers to vote on. It’s a little out of the usual for APR… it’s not about unbuilt aircraft or spacecraft; in fact, no aircraft or spacecraft designs are included. But it’s still an interesting historical artifact.
I also have a KSC Master Plan from the Shuttle era. Substantially larger format, with more conventional full-color maps. I haven’t scanned that due to the chore it would be to get done, but if this proves popular, I’ll get on it. I *also* have a large-format Master Plan for Ames Research Center.
14:25 into this video is an *astounding* scratchuilt Saturn V. Cutaways of not just all three stages, but also of the Command and Service Modules. unfortunately the camera moves too fast to make out anything that might say *who* built this masterpiece.
A 1979 promo for TMP. Some interesting stuff here… work on the Enterprise model, Klingon battle cruiser models getting exploded (a scene later re-imagined) and Persis Khambatta losing her hair, and not being entirely thrilled by it.
If LK-99 pans out as a true room temperature superconductor, it really does seem like it’ll be world changing. That’ll be great: no more need to cryo-cool electromagnets, making maglevs practical and making CAT scanners and the like a hell of a lot cheaper. And making the nightmare scenario of running out of helium much less nightmarish. They’ll make electric motors run cooler and more efficiently and, so I’m led to understand, rings of superconductors can be fed vast amounts of electricity which will losslessy just zip around the ring until called upon. More complex than a battery, but with the potential for *vast* energy densities. At last electric cars might be truly practical: an energy storage system allowing for a thousand miles range and the ability to be recharged in minutes rather than hours, using storage systems based on *lead* rather than rare earths. What’s not to like?
Some preliminary studies by independent labs suggest that at least some aspect of LK-99 are panning out, though nobody is ready to declare victory just yet. And even if the stuff works as advertised, to become truly useful it’ll need to be manufactured at high quality on an industrial scale.We don;t know squadoo about doing that just now. It might turn out to be easy enough for laymen to whip up batches of the stuff. it might turn out to be very difficult.
Here is what I think would be the absolutely best scenario: it’s possible to make the stuff to *adequate* quality on industrial scales, but it’s difficult and expensive. Unless… manufacturing takes place in microgravity. Then the stuff comes in with glorious quality and reliability. This would not only make the world better for all the reasons that the superconductor would, it would kick off space industrialization. Woo.
I would, however, be satisfied with the stuff working and being ground-manufacturable. Decades ago the Shuttle was supposed to kick off space industrialization via microgravity manufacturing of crystals and pharmaceuticals, but people figured out how to make that stuff on the ground.
Starships first not-exactly-successful launch was filmed not only from the ground, but from the NASA WB-57 flying at altitude. Apparently at least five cameras were trained on the launcher; video from two have been released, while three remain classified. i would *assume* that the classified three display some combination of:
Even with the somewhat dodgy tracking and potato-quality images, these are interesting. You really get a sense of how Starship flopped around the sky at the end there. Which was both sad and incredibly impressive… no other rocket would have survived as long flying *sideways.*
The driving motivation behind everything in the movie “Avatar” was humanity’s need of the mineral “Unobtanium.” It was special since it was a room temperature superconductor, allowing for a lot of advanced technologies. In the movie, humanity would travel light years and wipe out primitive alien civilizations to get it. But recent news suggests that we might not need to… but only if the study turns out to be true. And scientists are dubious.
Korean scientists claim to have created a room temperature superconductor (up to 127 decrees C). The video *seems* to back that up, but who knows. This will need to be tested and replicated. And the chunk they’ve displayed seems kinda cruddy… but the history of prior low-temperature superconductors seems to be that the first bits out the gate are cruddy, with quality following along as production techniques are refined.
*IF* this pans out, there are two fantastic takeaways here. The first is “hey, awesome, room temperature superconductor.” Maglev trains and such become a lot easier. CAT scanners won’t need liquid helium supplies to keep their magnetic bearings working.
But the second thing to note should be noted and noted *hard:* the material is primarily lead, doped with copper oxygen and phosphorus. You know what I *don’t* see there? I don’t see “rare-earth elements that we have to go hat in hand to the Chinese to obtain.” We don’t need to throw money into third-world hellholes to have them scrape vast pits into the ground. Domestic mining and production would seem entirely feasible.
That’s all great. I hope it bears out. But history is full of fabulous press releases that turned out to be fraudulent or simply wrong. That’s certainly possible here. We’ll just need to wait and see.
Here’s how Wikipedia describes the material. See how far you get before you go “I dunno what the frak they’re talking about:”
The chemical composition of LK-99 is approximately Pb9Cu(PO4)6O such that—compared to pure lead-apatite (Pb10(PO4)6O)[4]: 5 —approximately one quarter of Pb(II) ions in position 2 of the apatite structure are replaced by Cu(II) ions.[1]: 9 This partial replacement of Pb2+ ions (measuring 133 picometre) with Cu2+ ions (measuring 87 picometre) is said to cause a 0.48% reduction in volume, creating internal stress inside the material.[1]: 8
The internal stress is claimed to cause a heterojunction quantum well between the Pb(1) and oxygen within the phosphate ([PO4]3−) generating a superconducting quantum well (SQW).[1]: 10 Lee et al. claim to show LK-99 exhibits a response to a magnetic field (Meissner effect) when chemical vapor deposition is used to apply LK-99 to a non-magnetic copper sample.[1]: 4 Pure lead-apatite is an insulator, but Lee et al. claim copper-doped lead-apatite forming LK-99 is a superconductor, or at higher temperatures, a metal.[4]: 5
Here’s a video discussing the “discovery” and the causes of skepticism:
