• From:DARPA 50th Anniversary Gallery

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    • Have Blue

      By
      Graham Warwick
      Darpa began studying stealth in 1974, awarding Lockheed and Northrop contracts to build pole models for radar cross-section testing of rival designs for the Experimental Survivable Testbed (XST). Lockheed won, and in 1976 the Skunk Works was awarded a contract to build two 60-percent scale demonstrators, codenamed Have Blue. Distinctively faceted to deflect radar energy, the aircraft flew between 1977 and 1979, leading to development of the F-117. (Photo: Darpa/Lockheed)

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