testing…
Jun 262022
Jun 232022
The Boeing 733 is *reasonably* well known as the designation for the Supersonic Transport before it got re-designated the 2707. However, Model 733 was sort of a catch-all designation for a long (numerically and temporally) series of designs covering the gamut from giant Mach 2+ SST’s down to bombers, strike aircraft and fighters. The link seems to be that the 733 started off specifically as an SST designation; but other aircraft types were designed using the same aerodynamics. A fighter that was basically a scaled-down SST might be a model 733 (such as the Model 733-605). Shown below is a reasonably commonly reproduced piece of art from the 80’s depicting what is sometimes called the Model 606; it’s actually the Model 733-606. I’ve seen diagrams for a number of aircraft based on this basic geometry; the 733-606-11 and 733-606-12 were strike aircraft. The aircraft below is generally described as an interceptor, sometimes as a supercruise research platform.
The full rez scan of this artwork has been uploaded to the 2022-06 APR Extras folder on Dropbox for APR Patrons and Subscribers.
Jun 212022
Have you ever wondered to yourself “what were the Air Force Weapon System Designations as of September, 1959?” Wonder no more:
The following page does not continue the Weapon System list, but goes on to list Air Force ace fighter pilots.
Jun 182022
Recently sold on eBay was a display model for a vehicle labeled “SIPS.” No other data was available. However, this appears to be an upper stage modification for the LIM-49 Spartan surface-to-air anti-missile missile. Which suggests that the first “S” in “SIPS” standard for “Spartan.” Perhaps something like “Spartan Integral Propulsion System” or some such. However, this seems to appear to be a complete vehicle…. the very large first and second stage motors, as well as the warhead section, *appear* to have been replaced with a new, small booster with fins. Perhaps this was meant to test the third stage of the Spartan… or perhaps it was meant to be a way to find some use for the Spartan third stage after program cancellation, as some sort of scientific test vehicle.
The other photos from the ebay auction have been uploaded to the 2022-06 APR Extras folder on Dropbox for Patrons and Subscribers.
The diagram below shows the complete Spartan missile.
Jun 152022
HOTOL (HOrizontal Take Off and Landing) was a British Aerospace concept for a single stage to orbit airbreathing launch vehicle, originating in the mid 1980’s. It was a stellar example of aerospace optimism; like its contemporary the X-30 National Aerospace Plane, it relied on a propulsion system of spectacular complexity and stunning lack-of-actual-existence to function. As originally conceived it was supposed to have an RB545 engine; unlike the X-30’s scramjet engine, the RB545 was an air breathing rocket engine. Liquid hydrogen would be used to liquify incoming air, a portion of which would be turbine-fed into rocket engines to burn with the hydrogen. Due to some amazing bureaucracy, the engine was slapped with the “Official Secrets Act” which meant that it was so amazing that it had to be classified… so classified that it basically couldn’t be worked on. Genius! Whether it would have actually worked any better than NASP’s scramjet is anyone’s guess. In the going on forty years since the RB545 was dreamed up, it obviously hasn’t driven an aircraft to orbit. Or, it seems, off a runway. Like the scramjet, it *might* work, if only the development effort was properly funded and allowed to work through issues, rather than starved and throttled.
The early HOTOL configuration shown here would have taken off using a ground trolley in order to save on landing gear mass. The vehicle was nominally unmanned, though crew and passengers could be installed in a module in the cargo bay, located well aft. One problem the configuration had was substantial center of gravity and center of pressure issues, driven by the long, slim fuselage filled with sloshing and emptying hydrogen tanks. As memory serves, this remained a problem throughout the design lifetime of HOTOL.
The full rez scan of this artwork has been uploaded to the 2022-06 APR Extras folder on Dropbox for APR Patrons and Subscribers.
Jun 122022
Jun 032022
I’ve just made available to subscribers and Patrons at the $11 and up level a mid-1961 Honeywell booklet describing the space projects they were involved with at the time.
While not a detailed technical design document, this illustrated bit of PR is nonetheless interesting as it shows the sort of thing that aerospace companies would produce Way Back When in order to inform and enthuse the public. Modern aerospace companies would probably produce this as a web page or a PDF, which just doesn’t have the same impact. Of course, *this* one is being distributed as a PDF, but moving on…
If you would like to help fund the acquisition and preservation of such things, along with getting high quality scans for yourself, please consider signing on either for the APR Patreon or the APR Monthly Historical Documents Program. Back issues are available for purchase by patrons and subscribers.
May 302022
Pages from a Convair report on Post-Nova launch vehicles, 1963. This was for a contract to NASA-Marshall, and explains what the future of space launches looked like from this golden age, before Viet Nam and especially the “Great Society” program spending brought NASAs budget and its dreams of an actual future post-Apollo crashing down.
This particular report does not have the authors listed… but other related reports do. This has Krafft Ehricke all over it. It’s the sort of space optimism that he excelled at, and that a better world would have gotten.
Three models are examined… Conservative, Intermediate and Ambitious. Even the Conservative model has manned missions to Jupiter before 2000 (the thinking behind “2001” was not so far off… for the time), while the Ambitious model has long term Jovian bases by 1996 (followed by annual supply flights), manned missions to Titan bases by 1999 or so and manned flybys of Uranus and Neptune by the early/mid 1990s. A permanently manned Mars base by 1987 or so.
Instead we got… hmmm. What’d we get?
Along the same lines, two charts shown by Ehricke a few years later, showing what the future of spaceflight held:
The likes of Ehricke had a much higher opinion of Mankind than history has borne out.
If this sort of thing has been interesting, why not subscribe to the or the APR Patreon or the APR Monthly Historical Documents Program. ? Or just hit the tip jar?
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Protected: May 2022 APR rewards catalogs
Monthly Historical Documents Program, Patreon, Patreon catalog
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May 272022
May 092022
Mike released a video on some of the stranger aircraft designed in the US since World War II. It includes a plethora of full-color concept paintings, including the first color rendering of the McDonnell Douglas ATB that I’ve seen.