X-3 StilettoX 3 Stiletto NASA airplane model. The X 3 twin turbojet, the sole model constructed, was developed to evaluate the capabilities necessary for sustained supersonic flight at high altitudes. Additionally, it served to assess the application of novel materials like titanium and innovative construction methods. On October 20, 1952, the X 3 took off for its maiden flight at Edwards AFB, California, and achieved supersonic flight in June 1953. In contrast

The robust design was progressively improved and was heavily armed

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it carried bombs

and lowering fuel consumption for the KC-135A fleet

The aircraft was powered by four 21

but as a result of the loss of a 2-0-2 in 1948 due to wing structural failure

Manufacture of the airplane was initiated

This statement must be put in perspective

Two crashes were the result of pilot error

" was an entirely new design for Boeing

300 of the reliable aircraft were still in service

Wingspan 22 inches