
The X-13 was designed to test the idea 
      of vertical takeoff, transition to horizontal flight, and return to 
      vertical flight for landing by jet aircraft. Equipped with a temporary 
      tricycle landing gear. it was flown conventionally on December 10, 1955 to 
      test its overall aerodynamic characteristics. It was then fitted with a 
      temporary "tail sitting" rig and on May 28, 1956, flown from the ground in 
      a vertical position to test its hovering qualities. 
      
      
      The airplane made history on April 11, 
      1957, when it completed its first full-cycle flight at Edwards AFB, 
      California. It took off vertically from its mobile trailer, rose into the 
      air, nosed over into a level attitude, and flew for several minutes. It 
      then reversed the procedure to vertical flight and slowly descended to its 
      trailer for a safe landing. 
      The X-13 on display, one of two built, 
      was the Vertijet which made the full-cycle flight on April 11, 1957. It 
      was transferred to the U.S. Air Force Museum in 1959. 
      SPECIFICATIONS
      Span: 21 ft. 
      Length: 24 ft. 
      Height: 15 ft. 
      Weight: 7,200 lbs. max. 
      Armament: None 
      Engine: Rolls-Royce "Avon" of 10,000 lbs. thrust.
 
      Serial Number: 
      54-1620 
      PERFORMANCE
      Maximum speed: 350 mph. 
      Minimum speed: 0 mph. 
      Service Ceiling: 20,000 ft.