Report on Oxcart program; 1954 - 1974.
PaulMM (Overscan) said:STUDY SUMMARY- "Feasibility of A-12 (SR-71) for Air Launched Reconnaissance System"
Here's a study I picked up relating to modifying the SR-71 Blackbird to launch a Polaris missile-based orbital spysat on "once around" reconnaissance missions... While technically feasible (which is pretty interesting in itself) I can see a lot of downsides instantly with the idea... a lot...www.rocketryforum.com
FighterJock said:So what was faster in terms of overall speed? A-12 or SR-71A? I have heard many stories over the years that the SR-71A was faster than the A-12, could someone clear this up for me. :-\
sferrin said:FighterJock said:So what was faster in terms of overall speed? A-12 or SR-71A? I have heard many stories over the years that the SR-71A was faster than the A-12, could someone clear this up for me. :-\
I'd heard it was the other way because the A-12 was significantly lighter. Could fly higher too.
Johnbr said:
FighterJock said:So what was faster in terms of overall speed? A-12 or SR-71A? I have heard many stories over the years that the SR-71A was faster than the A-12, could someone clear this up for me. :-\
JimK said:FighterJock said:So what was faster in terms of overall speed? A-12 or SR-71A? I have heard many stories over the years that the SR-71A was faster than the A-12, could someone clear this up for me. :-\
From COMIREX-D-12.1/1 (Approved for release Date: Aug 2007)
I would interpret the equality of Mach numbers listed as a propulsion system limitation.
Archibald said:Despite my best efforts I couldn't find whether this has been posted before on this forum.
In 1973 the Shah of Iran got interested in all those A-12 Oxcart stored at Palmdale since 1968 (and the program was not declassified until 1982 !)
http://www.roadrunnersinternationale.com/archives/a-11_iran.html
TomS said:Archibald said:Despite my best efforts I couldn't find whether this has been posted before on this forum.
In 1973 the Shah of Iran got interested in all those A-12 Oxcart stored at Palmdale since 1968 (and the program was not declassified until 1982 !)
http://www.roadrunnersinternationale.com/archives/a-11_iran.html
It's not clear from the letter whether Iran had been made aware of the idea. They ask permission to submit a "specific proposal" to Iran; it's possible that Lockheed as doing the groundwork to see if the offer was even possible before approaching Iran.
As far as declassification, President Johnson had "outed" the YF-12 in early 1964 but called it the "A-11." He also announced the SR-71 later that year. The "fact of" the A-11/A-12 program was probably known by this point, though not who had owned them or where they had flown.
From a technical perspective, what's interesting to me is the suggestion of a strike capability against either land or sea targets with "currently available" armament. Clearly this meant conventional weapons, but I don't think anyone has seen a description of non-nuclear strike capabilities for this family using conventional weapons (there is a passing reference in this thread to anti-ship with tungsten kinetic energy penetrators, but that seems unlikely to qualify as "currently available.") Any ideas? I really doubt you could get useful effects with one or two iron bombs from a Mach 3, and laser guidance seems unlikely, since it would have required the "F-12" to slow down and loiter. Possibly a conventional version of the AGM-76 Falcon?
sferrin said:SRAM was around, and there are drawings around of a Blackbird carrying four of them, along with possible performance parameters.
In 1960 Lockheed began developing what would become the YF-12A interceptor derivative of the CIA's A-12 reconnaissance aircraft. As the F-108 had been cancelled, Hughes joined with Lockheed and the weapon system which had once belonged to the LRI-X found a new home in a Lockheed Blackbird. The YF-12A featured four weapon bays, but the forward bay on the starboard side was used for excess electronics equipment associated with the fire control system
SOC said:Not sure I have an account anywhere else to host the files, but if you want the images I can email them your way.
Motocar said:Cutaway Lockheed A-12, author Rigatto and modified by Motocar