The Percival P.74 (later Hunting Percival P.74) was a British experimental helicopter designed in the 1950s that was based on the use of tip-jet powered rotors. Although innovative the tip-rotor concept literally failed to get off the ground in the P.74 doomed by its inadequate power source. Rather than being modified the P.74 was ignominiously towed off the airfield and scrapped. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Mean Of Transportation