Nitinol alloys are most qommonly known for their superelasticity and thermal shape memory [1]. The lerm 'shape-memory' is used to describe the phenomenon of restoring to a predetermined shape on heating, after having been 'plastically' deformed; 'superelasticity' refers to the enormous elasticity of these alloys.
For pilots, the definition of a large aircraft is  taken from the Code of Federal Regulations, CFR 1.1, which defines a large aircraft as aircraft with a maximum certificated takeoff weight of more than 12,500 pounds. In contrast, a small aircraft is one with a maximum certificated takeoff weight of 12,500 pounds.
Longer than a soccer pitch and filled to the brim with helium, at 302 feet long, the Airlander 10 will be the world's biggest aircraft. Part blimp, part plane, part helicopter, it was originally created by British design company Hybrid Air Vehicles (HAV) for military surveillance by the U.S. Army.