Documents / Official release
This is a Secret History Staff monograph by Gregory W. Pedlow and Donald E. Welzenbach of the Central Intelligence Agency, published in 1992. It gives a history of the CIA's manned overhead reconnaissance program from 1954 to 1974, covering the development and operation of the U-2 and the A-12 OXCART aircraft. It covers overflights of the Soviet Union, the 1960 downing of Francis Gary Powers, and later operations. One section is titled "U-2s, UFOs, and Operation BLUE BOOK."
From the source:Release of 2026-06-12 This CIA History Staff document chronicles the complete history of the U-2 and OXCART (A-12) high-altitude reconnaissance aircraft programs from 1954 to 1974, detailing their development, operations over the Soviet Union and other targets worldwide, the famous downing of Francis Gary Powers in 1960, organizational reforms following that incident, and the eventual transfer of operations from CIA to Air Force control. A more redacted version of this document has been available on CIA's public website.
“The Advance”34 pages
268 Secret NOFOAN Chapter 6 Rodgers determined that a high-altitude object moving two to three times as fast as a normal aircraft would produce such a small blip with so little persistence that the radar operator would have great difficulty tracking it, if indeed he could even see it. Rodgers esti mated that for an aircraft to take advantage o!· this Blip/Scan Ratio phenomenon it must fly at altitudes approaching 90,000 feet and have a radar cross section of less than 10 square meters, preferably not much over 5 square meters. However, for a Mach 3.0 aircraft to achieve such a small radar cross section, its designers would have to make many concessions in its structural design and aerodynamics.• By the summer of 1959, both firms had completed their propos als. In early June, Lockheed submitted a design for a ground-launched aircraft known as the A-11. It would have a speed of Mach 3.2, a range of 3,200 miles, an altitude of 90,000 feet, and a completion date of January 1961. Kelly Johnson had refused to reduce the aerodynam ics of his design in order to achieve a greater antiradar capability, and the A-11 's radar cross section, although not great, was substantially larger than that of the much smaller parasite aircraft being designed by Convair." The Convair proposal called for a small, manned, ramjet-pow ered, reconnaissance vehicle to be air launched from one of two spe cially configured Convair B-58B Super Hustlers. The FISH vehicle, a radical lifting body with a very-small-radar cross section, would fly at Mach 4.2 at 90.000 feet and have a range of 3,900 miles. Two Marquardt ramjets would power its Mach 4.2 dash over the target area. Once the FISH decelerated, two Pratt & Whitney JT-12 turbojets would bring it back to base. The ramjet exit nozzles and wing edges would be constructed of Pyroceram, a ceramic material that could withstand the high temperatures of very high speeds and would ab sorb radiofrequency energy from radar pulses. Convair stated that the FISH could be ready by January I 961."' Convair's proposal depended on two uncertain factors. First and foremost was the unproven technology of ramjet engines. At the time, no aircraft in existence could carry a large, ramjet-powered craft into the sky and then accelerate to sufficient speed for the ramjet engines 'Unnumbered Convair document on the Blip/Scan Ratio or Rodgers· Effect (TS). ,, Johnson, "Archangel log." Dt:l:ember 1958-July 1959. '" OSA History. chap. 20. p. 12 (TS Codeword); Convair Division. General Dynamics Corporation, "Pniject FISH Status Review," 9 June 1959 (S). Seere;t
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 406 pages are in the text index: search them above, or from the library's search.