New flight photo of the Convair XF-92A, first U. S. delta wing plane to take the air, shows the vertical fin area below the wing and the stall vanes near each wingtip to prevent spanwise flow of air. The XF-92A is being used to gather data for design of a new delta wing interceptor by Convair. Douglas Aircraft Co. also has a delta wing fighter design (XF4D) in the mill for the Navy. Many engineers believe that the delta wing configuration is the most promising for supersonic fighter-type aircraft.
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