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... THE SUCCESS OF THE VERTICAL TAKE-OFF AIRCRAFT THE U.S. NAVY'S CONVAIR XFY-I IN HORIZONTAL FLIGHT ABOVE ITS TINY RUNWAY The Pogo fighter plane flies at more than 500 m.p.h. during a test flight over San Diego, in California. The arrow at right points to the area, only 50 ft. square, on the Lindbergh Field runway, which this vertical take-off aircraft requires to take off and to land. The ...