Documents / FOIA release
This is a 1992 CIA History Staff monograph by Gregory W. Pedlow and Donald E. Welzenbach, originally classified Secret NOFORN and approved for release in 2013. It covers the CIA's manned overhead reconnaissance program from 1954 to 1974 and the two aircraft it developed, the U-2 and the A-12 OXCART. The history covers the U-2 overflights of the Soviet Union, the 1960 downing of Francis Gary Powers and later operations in Asia and Latin America. It also includes a section on U-2s, UFOs and Operation BLUE BOOK.
“The Pentagon”10 pages
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Secret NOFORN Chapter 2 67 Arrival of U-2 prototype at Area 51 (left); Article 341, the U-2 prototype (below) Johnson had designed the U-2 to use the Pratt & Whitney (P&W) J57/P-31 engine, which developed 13,000 pounds of thrust and weighed 3,820 pounds, giving it a power-to-weight ratio of 3.4:1. When the U-2 first took to the air, however, these engines were not available because the entire production was needed to power specially configured Canberra RB-57Ds for the Air Force. The first U-2s therefore used P&W J57/P-37 engines, which were 276 pounds heavier and delivered only 10,200 pounds of thrust at sea level; the resulting
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FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 406 pages are in the text index: search them above, or from the library's search.