Clarence Johnson
Clarence Johnson
Clarence Leonard "Kelly" Johnsonwas an American aeronautical and systems engineer. He is recognized for his contributions to a series of important aircraft designs, most notably the Lockheed U-2 and SR-71 Blackbird. Besides the first production aircraft to exceed Mach 3, he also produced the first fighter capable of Mach 2, the United States' first operational jet fighter, as well as the first U.S. fighter to exceed 400 mph, and many other contributions to a large number of aircraft. As a...