This display model was sold on EBay some months back:
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.
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.
Recently sold on EBay was a sizable (something like 4′ long) wind tunnel model of the Curtiss Wright Model 90 AAFSS submission. This was a derivative of their X-19… more or less a quad-tilt-rotor. The Model 90 would have been fairly highly armed, designed to fulfill the same role that the winning AAFSS design – the Lockheed AH-56 Cheyenne – was designed for: transporting troops and tearing up ground targets. The US has not had an operational vehicle like this; the Soviet “Hind” helicopter is the closest, though substantially slower, analog.
The Model 90 wind tunnel model was formerly on display at an aviation museum in Teterboro, New Jersey. No idea where it ended up, but hopefully it found a good home. I made a half-assed effort to crowdfund this one, but I think the lack of a good way to split the spoils among the funders doomed the concept. How *do* you reward funders for a purchase like this? Best idea was to have the thing 3D scanned, and distribute the scan among the funders, but unlike a scan of a drawing or a document, that’s not going to be readily useful for most people.
What I’d hoped to do was to disassemble the model, male fiberglass molds of the components, reassemble and restore it to like-new-ish condition then send it on to an appropriate and willing museum, possibly Ft. Rucker (since they’re all about Army aviation and have themselves an AH-56). Then make a few fiberglass copies from the molds, converting the “wind tunnel models” into detailed display models. Alas.
A recently sold item on EBay was this piece of artwork depicting a Boeing concept for an airliner powered by two propfans. These engines, popular items of study in the late 70s and into the 80s, were somewhere between turbofans and turboprops, with contra-rotating unducted fans using blades of complex design and contours. The advantage was, of course, fuel efficiency; the shape of the blades meant that they could spin with tip speeds closer to the speed of sound compared to turboprop blades, and could push the plane faster than normally practical for a turboprop.
Given the NASA logo on the tail, this piece of art undoubtedly depicts a proposal for an unducted fan test vehicle. The gray areas on the wing upper surfaces may indicate laminar flow control via suction, as with the Northrop X-21; this would all conspire to make this a very fuel efficient, if also very complex, jetliner.
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.
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.
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:
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!
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.
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.
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:
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.
This video has it all:
The obvious question that this video raises is… what happened with the model? Most wind tunnel models end up getting scrapped – shredded and melted down to recycle the metal. but every now and then one escapes. The company keeps it for display, or in an archive, or sometimes an employee simply takes it home. Sometimes they end up on EBay.
Here’s another photo of the lifting body mockup I showed a month ago. Here you can see that the full display – apparently a USAF public relations item – included a more or less full length booster, presumably a Titan II. It’s not the best angle, but it *kinda* looks like this might be just the first stage of the Titan II (or a round tube resembling one) without a second stage. It’s doubtful that there was ever a plan to launch a one-man lifting body atop a single Titan II first stage; it would be distinctly suborbital, and without some deep throttling the acceleration would probably be pretty crushing.
When i last posted this, I mentioned that photos of this were shown “many times.” I wrote that because I remember seeing such photos… but once I started actually looking for them they turn out to be rather hard to find. I imagine I must’ve seen the photos in 1960’s magazines or such. Two more not terribly helpful photos are available HERE and HERE.
Boom Technology, a company working towards a supersonic passenger transport, is unveiling in Denver the mockup of their “XB-1,” a 1/3 scale technology demonstrator.
See the link above for some hugenormous photos, but here’s what the thing looks like:
To me the XB-1 looks like the Rose Mach Buster and a T-38 got a little drunk and made the plane with two backs, then slathered the baby with Bondo and sanded real, real smooth.
Boom Technology is working towards a commercial SST with a cruise speed of Mach 2.2, 44 passengers and transAtlantic range. They are hoping to reduce sonic boom to levels low enough that the FAA will let them fly overland, but as the law is currently written I don’t think they could legally do it if their plane was utterly silent. Getting the bureaucrats and politicians to change the regulations that stifle progress is probably a much bigger chore than designing a supersonic jet that’s actually commercially viable.