CentralNotice Kelly Johnson (engineer) From Wikipedia, the free encyclopedia Jump to: navigation , search Clarence Leonard "Kelly" Johnson Clarence Leonard "Kelly" Johnson Born ( 1910-02-27 ) February 27, 1910 Ishpeming, Michigan , U.S. Died December 21, 1990 ( 1990-12-21 ) (aged 80) Los Angeles, California , U.S. Education Flint Junior College University of Michigan Engineering career Engineering discipline System Engineering Employer(s) Lockheed Martin Significant projects P-38 Lightning Skunk Works Lockheed U-2 SR-71 Blackbird Significant design Lockheed U-2 Clarence Leonard "Kelly" Johnson (February 27, 1910 – December 21, 1990) was an American system engineer and aeronautical innovator. He earned renown for his contributions to many noteworthy aircraft designs, especially the SR-71 Blackbird . Besides the first product...