Jan 192021
 

A ca. 1964 Boeing rendering of an HL-10-derived spaceplane in orbit. Numerous companies – Boeing, McDonnell, Lockheed, Northrop, etc. – contemplated the development of a logistics spaceplane based on the HL-10. The spaceplane itself would, rather like the X-20 Dyna Soar, have been minimally functional in space; most of the propulsion and power would have come from the attached adapter module. The conical adapter would have also carried the bulk of the vehicles payload to be delivered to orbit, and would be used to provide a de-orbit burn for the spaceplane. The adapter would therefore burn up on re-entry, leaving the lifting body to glide to a runway landing. The spaceplane itself would be crammed full of astronauts and the life support they’d need; there would generally be little capacity for anything else, certainly not payload going back downhill. This was fine, though, as there were few enough payloads other than humans that made sense to send *back* down the gravity well.

 

 Posted by at 8:18 pm
Jan 142021
 

A piece of concept art depicting the AMROC Industrial Launch Vehicle 1, circa 1987. AMROC specialized in hybrid launch vehicles, and the privately funded and developed ILV was no different. What the vehicle looks like is a liquid propellant core vehicle with a bunch of solid rocket strap-on boosters… but what it actually is is a core made up of liquid oxygen tanks, surrounded by clusters of solid fuel motors. The motors were fed LOX from the core, firings together to create  a sort of plug nozzle using the aft end of the propellant tank to react against (though it appears the bulk of the expansion took place within  individual nozzles). When the first stage motors burned out, the whole thing fell off as a single stage.  The vehicle had four stages; stages 2,3 and 4 were made of different solid motors around a common liquid tank core. The whole stack was 82 feet long. It was supposed to have been able to deliver 1800 kilograms to a 200 km orbit from KSC, or 1350 kg to 200 km polar orbit from Vandenberg; a little over 1400 kg to a 1000 km KSC orbit or about 1050 kg to a 1000 km polar orbit. First launch attempt was to be in the latter half of 1988… that didn’t happen.

 Posted by at 12:34 pm
Dec 312020
 

Just released, the December 2020 rewards for APR Patrons and Subscribers. Included this month:

Diagram: a large format diagram of a Lockheed cruise missile. The designation of the missile is not given, but this looks like a SCAD design.

Document 1: Consolidated Class VB Carrier Based Bomber, from 1946

Document2: “Economic Aspects of a Reusable Single Stage To Orbit Vehicle,” a paper by Phil Bono on the ROOST launch vehicle from 1963

Document 3: “Shuttle Derived Vehicles,” a NASA-MSFC briefing to General Abrahamson from 1984

CAD Diagram: XSM-64A Navaho, the configuration that would have been built as an operational vehicle had the program gone forward

If this sort of thing is of interest, sign up either for the APR Patreon or the APR Monthly Historical Documents Program.




 Posted by at 2:28 pm
Dec 252020
 

In 1985, Rockwell International considered the possibility that there might be profit in clustering the External Tank from the Space Shuttle in Earth orbit. There the tanks could be filled with propellant to serve as orbital “gas stations,” or rebuilt into space habitats or other structures, or simple reprocessed for the raw structural materials. In order to do this the Shuttle would have to shed a noticeable fraction of total payload. Something not given a whole lot of thought was what to do about the insulating foam applied to the tanks; ultraviolet sunlight, thermal cycling and a harsh vacuum would cause the foam to break down ans turn each orbiting tank into a little comet, the nucleus of a cloud of foam bits.

Still, it would have been nice if the tanks had been used rather than simply dumped into the Indian Ocean.

 Posted by at 1:55 am
Dec 242020
 

In 1985, Rockwell International considered the possibility that there might be profit in ICBMs. In particular, small ICBMs (“Midgetman”), road-mobile with a single warhead. Sadly, the SICBM did not come to be. Nor did any other ICBM. The current ICBM that the USAF fields is the Minuteman, merely an updated version of the same missile first fielded nearly *sixty* years ago. The Peacekeeper ICBM was deployed the year after Rockwell produced this document… and the Peacekeeper was withdrawn twenty years later with no replacement in sight

 

 Posted by at 1:54 am
Dec 162020
 

A recently donated blueprint of the AGM-69A Short Range Attack Missile:

 

I’ve made available to above-$10 subscribers and patrons both the full resolution scan of the above, as well as a processed clearer B&W version. If you’d be interested in helping to preserve aerospace history such as this, as well as receiving bonus content like this, please consider signing up either for the APR Patreon or the APR Monthly Historical Documents Program.




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 Posted by at 4:05 pm
Nov 302020
 

The rewards for APR Patrons and Monthly Historical Documents program subscribers have been sent out. Included in the November 2020 rewards package are:

1: A diagram of a proposed DC-9 aft propfan research configuration

2: A Kaman K-Max brochure

3: A preliminary draft/outline for a report on F-108 employment

4: A CAD diagram of the M61A1 Vulcan

 

If this sort of thing is of interest, sign up either for the APR Patreon or the APR Monthly Historical Documents Program.




 Posted by at 5:42 pm
Nov 242020
 

Hey! Anybody hereabouts interested in unbuilt variants of the North American B-70 bomber? I know a guy who can hook you up:

https://media.defense.gov/2020/Nov/23/2002540204/-1/-1/1/B-70%20VARIANTS.PDF

An official publication from the AFMC History Office, edited by noted aerospace author Tony R. Landis. Recommended.

 Posted by at 8:34 pm
Nov 232020
 

Stratolaunch starts building Talon hypersonic plane for Mach 6 flights

Construction is underway of an unmanned rocket-powered aircraft to be carried by the Stratolaunch “Roc” aircraft. The Talon-A is supposed to be something like the proposed X-24C… a lifting body hypersonic platform that can have various experimental units – including scramjets – attached to it. The Roc would be capable of carrying three Talon-A’s at a time, though it seems unlikely that there’s a really good reason to do so.

 

 Posted by at 2:52 pm
Nov 162020
 

This art was posted a decade ago. But behold! Now there’s dimensional and weight data. Woo.

An early-1960’s idea for a one-man “space pod.” Similar in concept to von Braun’s “Bottle Suit,” the Remora would allow an astronaut to work in a more comfortable setting than a full pressure suit, while giving the astronaut more tools and greater protection from radiation, meteoroids and other space hazards.

The name “Remora” comes in part from the fact that the “suits” would not, unlike normal EVA suits, have to be put all the way through an air lock. Instead, the “head” of the Remora would enter a small port on the spacecraft, lock in, the pressure would equalize and the transparent dome would open allowing the astronaut to climb right out. The pressure in the spacecraft/space station would be the same as that within the Remora, meaning no prebreathing and no dangerous and time consuming steps up and down in pressure. The art shows the astronaut wearing a pressure suit; this would presumably be a safety measure in case the Remora was breached. So long as the Remora stayed pressurized, the astronauts suit could have had little to no relative pressure, meaning that it would not be stiff and difficult to work in. The Remora was to be equipped with a reaction control system of some kind, but exactly what remains unclear. Options would include:

1: Cold gas, like pressurized nitrogen

2: Monopropellant like hydrogen peroxide or hydrazine

3: Bipropellant, either hypergolic storables or something like hydrogen peroxide/kerosene. Cryogens seem unlikely.

The Remora was clearly meant to remain tethered to its spacecraft/space station. One wonders if the astronaut was supposed to remove his suit gloves before putting his hands into the external gloves of if the one would fit in the other. Additionally, it seems like there should have been little pressure doors on the inside of the glove in case a finger gets punctured.

A vastly higher resolution version of this art is HERE.

 Posted by at 11:18 am