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.
aâ¢viâ¢aâ¢tion (ËeÉª viËeÉª ÊÉn, ËÃ¦v i-) n. 1. the design, development, production, operation, or use of aircraft, esp. heavier-than-air aircraft. 2. military aircraft. [1865â70; < French] a`viâ¢atâ²ic (-ËÃ¦t Éªk) adj. Aviation accelerometer an instrument for measuring and recording the rate of acceleration of an aircraft.