The official beginning of the ATF program usually traces to 1981 when USAF Aeronautical Systems Division, or ASD, released a request for information for concepts for an advanced tactical fighter. Part 2 can be viewed here.Ī significant portion of the history of the F-22 spent years encased in a collection of wooden boxes stacked in a small storage closet in the engineering building at Lockheed Martin Aeronautics Company in Fort Worth, Texas.The containers conceal a variety of design study models dating back to the earliest phases of the Advanced Tactical Fighter-to what eventually became the F-22 Raptor. This article is the first of a two-part series that was originally published in Code One in 1998.
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