Documents / FOIA release
This is a CIA History Staff monograph by Gregory W. Pedlow and Donald E. Welzenbach, written in 1992 and approved for release in 2011. It covers the CIA's manned overhead reconnaissance program from 1954 to 1974 and its two aircraft, the U-2 and the A-12 OXCART. It follows their development, the overflights of the Soviet Union, the downing of Francis Gary Powers in 1960, and later operations. One section is titled "U-2s, UFOs, and Operation BLUE BOOK."
“Burbank”8 pages
"--ggettrt-NCIEQBa Chapter 3 129 Chordwise wire I Spanwise wire Ferrite beads Fiberglass member Sbet CO5653421 UNCLASSIFIED absorption devices for the U-2. Once these devices were installed on " Trapeze " antiradar attachments the operational U-2s, he explained, the "majority of incidents would to the U-2 be undetected."" Work on methods of reducing the U-2's vulnerability to radar de- tection had begun in the fall of 1956 as the result of President Eisenhower's disenchantment with the overflight program following Soviet detection and tracking of the first series of U-2 missions as condu this research under a project codenamed RAINBOW. formerly of MIT, coiied the theories of Harvard h sicist Edward Purcell into systems that could be used on aircraft. radar-deception system consisted of a series of attachments to t -2. First bamboo poles and later fiberglass rods were attached to the wings, where they would not interfere with the control surfaces. At the ends of these poles, completely circling " Andrew J. Goodpaster. Memorandum of Conference with the President. 6 May 1957 (TS); "Record of Action—Meeting of May 6. 1957," WHOSS, Alpha, DDEL (TS). ED 129581.6(dUll>111<25Yrs (Si UNCLASSIFIED
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FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is under it. 406 pages are in the text index: search them above, or from the library's search.