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.
A380-800 aircraft developed by Airbus is the largest aircraft in the world. The first Boeing 777-300 aircraft was delivered in May 1998. Boeing 747-400 is the most popular aircraft in the Boeing 747 family. Airbus A340-600 is a super-stretched version of the A340 family.