Dec 312016
 

This display model was sold on EBay some months back:

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Without a display stand it’s difficult to determine exactly who made this, but all indications are that it was an “official” model, made by Boeing, Lockheed or NASA. The design was given some small amount of study around 1973, though the available documentation on it is lean.

Lockheed studied the same idea with the C-5 Galaxy. Of course the C-5 would have been easier to modify since it already had shoulder-mounted wings.

 Posted by at 2:55 pm
Dec 292016
 

I’d posted this YouTube video a few years ago, but I’ve found that not only was the video yanked, the whole account associated with it was nuked. Hmmmph.

A film about NERVA (Nuclear Energy for Rocket Vehicle Applications), 1968.

Provides a basic description of nuclear rockets, plus some art, animation and diagrams of nuclear propelled space vehicles along with footage of test firings.

 

 

 Posted by at 2:24 am
Dec 232016
 

And that job is “history.” You know, to actually know what happened or, failing that, to make some minimal effort to look it up. Seems simple enough…

So there I was, minding my own business, watching the latest thrill-packed episode of “Hunting Hitler.” For those who have somehow missed out, this is the latest iteration of the “Ghost Hunter” and “Bigfoot Hunter” phenomenon… overpaid idjits use hyperbole and fairy tales to go run around in the woods and poke around in some abandoned properties looking for mythical entities. in this case, Our Heroes are stomping around Argentina attempting to prove that Hitler survived WWII and wound up there. The most recent episode was focused on the bullcrap notion that the Nazis actually got an atomic bomb up and running and set it off in Thuringia during the war, and then attempted to set up another A-bomb program post-war in Argentina to further the aims of the Fourth Reich.

Yeah, I know. “I’m not saying it’s Nazis… but it’s Nazis.”

Shows like this are really only good for two things: background noise while you’re working on something, and hate-watching. Now, I don;t know a whole lot about Argentina, so I don’t throw things at the TV when they undoubtedly make howleriffic errors about that country and it’s history. But there are a few things I *do* have some knowledge of. Some things I recognize right off the bat. And they trotted one of these things out and repeated a decades-old lie about it.

Early in the episode, someone who I guess is supposed to be one of their researchers pulls out a page from a German document, a piece of evidence meant to show that the Nazis were planning on nuking Manhattan. This page right here:

sangermap3 sangermap2 sangermap1

I bet there are more than a few reading along who saw that and went, “Hey, I recognize that.” And of course y’all should… I’ve brought it up before. It’s from Eugen Sanger’s 1944 report on his global-range rocket bomber. And, yes, it shows the bombardment of New York City. But *not* with atomic weapons. It’s simply a bell curve… a statistical representation of the distribution of bomb damage if a *lot* of bombs were dropped on a target and the bombs had the usual sort of circular error probability. There’s not a single damn word in Sangers report about nuking New York, very likely because Sanger probably didn’t know a single thing about atom bombs. If there was one thing the Nazi system was good at, it was compartmentalizing programs. If there was another thing the Nazis were good at, it was screwing up atomic physics, what with their hatred of Jews and their reliance upon Werner Heisenberg who either wholly misunderstood what is needed to make an A-bomb or who spent his time on the German A-bomb program busy designing faulty exhaust ports in it.

Way back in 2009 I posted about this map and how it has been misrepresented by charlatans and lazy authors for years. The abuse continues, it seems.

 

 Posted by at 2:48 am
Dec 072016
 

From the NASA-Marshall Space Flight Center, December, 1961: An illustration of the forthcoming Saturn C-5 S-IC stage. This appears to be *mostly* as the S-IC would be built, but there are some detectable differences. Missing are the four small (and apparently superfluous) stabilizing fins that appeared on the outboard engine fairings. And located at the front are the eight retro rockets that would end up inside the aforementioned engine fairings.

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This illustration came via EBay. The full-resolution scan (all 15+ megabytes of it) is available in the 2016-12 Dropbox folder for APR patrons. If you’d like to gain access to this and two years worth of high-rez aerospace goodies like this, as well as help out the effort to procure and preserve aerospace goodies like this, please consider joining the APR Patreon.

 Posted by at 3:49 am
Dec 022016
 

A late 1980’s concept for NASA by Frassanito & Associates for a “Shuttle 2.” Clearly derived from Space Shuttle general ideas, it features a number of important differences, including:

  • A separable cockpit for use in emergencies (a concept given substantial study in the wake of Challenger)
  • Separate liquid hydrogen drop tanks above the wings
  • No boosters, but instead LH2/LOX engines mounted under the ET (presumably SSMEs, which appear to be in individual re-entry and recovery “capsules”)

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It’s not certain, but the ET looks bigger than the standard STS ET. Which would make sense given that it needs to be filled with substantially more propellant to take the place of the SRBs.

This piece of art, and two more providing a closer look at the orbiter, are available in high-rez for APR patrons on the APR “Extras” Dropbox folder, under the 2016-12 APR Extras sub-folder. If you’re interested, take a look at the Aerospace Projects Review Patreon page and consider joining!

 Posted by at 10:42 pm
Nov 292016
 

I’ve not devoted much cogitation to the EM drive, mostly because it just strikes me as bunk. There has recently been some renewed interest due to the appearance of a peer reviewed paper that seems to back up some of the claims… but when the thrust level for 100 watts is measured in *micro* newtons, I just can’t scrape up much interest. Especially when the guy behind the idea was claiming that it would be able to power flying cars (capable of VTOL) and space launch boosters, requiring an improvement in T/W on the order of ten to a hundred MILLION times. And, oh yeah, overturning the laws of thermodynamics. Whenever something claims to do that, I tend to tune out.

If the EM drive actually works (and it seems more likely that it works like a radiometer), then it’s kinda like everything else that has ever been touted as actual functioning magic. Yeah, sure, great, you can bend that spoon with your mind. But look at the effort required; using magic, you’re doing it the hard way.

Here is a good if lengthy explanation of why the EM drive most likely doesn’t work, and even if it did, why it sucks:

 Posted by at 2:45 am
Nov 252016
 

In 1965, the US Army briefly examined a need they didn’t know they had: firearms for use in space and on the Moon. The US Army Weapons Command in Rock Island, Illinois, put out a brochure detailing some ideas for lunar weapons… “The Meanderings of a Weapon Oriented Mind When Applied in a Vacuum Such as on the Moon.” While not a detailed engineering study, it nevertheless provides and interesting look at the sort of weapons that might be developed for use in a low gravity space environment.

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Conventional firearms would work just fine in space… at least for a while. A vacuum would cause most lubricants to outgas and turn to waxy solids or hard rubber-like crud. The extreme differences in temperatures between sunlit and shaded would cause many metals to warp and mechanisms to seize up. And there’s always the possibility of vacuum welding, where two similar metals will simply stick together, fusing into one. And recoil that gives a shooter a good kick on Earth might knock them over on the Moon, or send them tumbling in freefall. The authors described these problems and pointed out potential solutions. Additionally, they provided a number of notional concepts for hand-held weapons, ranging from modifications to the normal sort of firearm, to guns powered by springs (with, it must be said, rather optimistic muzzle velocities) to gas-guns and handheld mini-rocket launchers. It’s odd that the Gyrojet was not included. A laser weapon is said to probably be just the thing, but development of such a thing would take 20 years. A man-portable laser weapon capable of doing useful damage in a combat situation remains sadly unavailable.

Note that the weapons have quite unconventional ergonomics. Some don’t even have proper pistol grips; those that do have triggers roughly the full length of the grip. This is so that a space-suited hand can squeeze the trigger, something very difficult for a conventional single-finger trigger.

 

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The brochure ends with several pages of useful math, providing calculations for ballistic range in other gravity fields, penetration capabilities and muzzle velocities and gas pressures.

The report can be found here:

https://assets.documentcloud.org/documents/3038458/The-Meanderings-of-a-Weapon-Oriented-Mind-When.pdf

Much more aerospace stuff is available via the APR Patreon. If this sort of thing interests you, please consider signing up… not only will you help fund the search for obscure aerospace history, you’ll gain access to a lot of interesting stuff, not available elsewhere.

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 Posted by at 2:43 am