![Aircraft / Aviation / Signals intelligence / Black projects / Lockheed SR-71 Blackbird / Lockheed A-12 / Lockheed YF-12 / Kelly Johnson / Lockheed U-2 / Area 51 / Edwards Air Force Base / Skunk Works Aircraft / Aviation / Signals intelligence / Black projects / Lockheed SR-71 Blackbird / Lockheed A-12 / Lockheed YF-12 / Kelly Johnson / Lockheed U-2 / Area 51 / Edwards Air Force Base / Skunk Works](https://www.pdfsearch.io/img/a9613897211e0293ca459b1e22d0c531.jpg) Date: 2010-07-27 17:50:10Aircraft Aviation Signals intelligence Black projects Lockheed SR-71 Blackbird Lockheed A-12 Lockheed YF-12 Kelly Johnson Lockheed U-2 Area 51 Edwards Air Force Base Skunk Works | | A-12, YF-12A, & SR-71 Timeline of Events JuneMay 1956 Pratt & Whitney contract to develop engine(JT9) for CL-400; J-58 (JT 11D-20) is 80% size of JT9 (SME)1 May 1956 Pratt & Whitney contract to develop engine(JT9Add to Reading ListSource URL: roadrunnersinternationale.comDownload Document from Source Website File Size: 151,21 KBShare Document on Facebook
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