The unique Northrop XP-79

 

Small flying wing fighter built experimentally for the AAF by Northrop Aircraft Co. is designated XP-79. Among the plane's "firsts" and distinctive features are that the pilot lies prone to enable him to withstand 12 G's on pullouts, and that this is the first U. S.-built flying wing to be powered by jet engines—two Westinghouse 19-B's. The aircraft was designed as a regular fighter, carrying four machine guns. 

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Aviation Week | June 17, 1946