Experimental (6513551)

Martin Marrieta X-24B 65-13551 at the Edwards AFB Open House on May 16, 1973. Its first glide flight was the following August 1, piloted by John Manke. The pilots of the NB-52B were Lt. Colonel Ranz and Captain Higgins. Martin Marrieta created an entirely new aerodynamic shape for the X-24B by building an aluminum glove over the existing X-24A airframe.