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.
A wide-body aircraft is a jet airliner having a fuselage wide enough to accommodate two passenger aisles, also known as twin-aisle aircraft, with seven or more seats abreast.The typical fuselage diameter is 5 to 6 m (16 to 20 ft).In the typical wide-body economy cabin, passengers are seated seven to ten abreast, allowing a total capacity of 200 to 850 passengers.he biggest wide-body aircraft are known as jumbo jets due to their very large size; examples include the Boeing 747 (jumbo jet), Airbus A380 (superjumbo jet), and upcoming Boeing 777X (mini jumbo jet). The phrase, jumbo jet, derives from Jumbo, a famous circus elephant in the 19th century.