Annealed glass immersed in a bath of molten salt resulting in an ion exchange between the salt and the glass. The composition of the salt is such that this ion exchange causes the surface of the glass to be distorted (by expansion), thus putting the surface in a state of compression.
Aviation Glossary Mission Statement
Glass that has had the internal stresses reduced to low values by heat treatment to a suitable temperature and controlled cooling.
Interlayer materials are transparent adhesive materials used to laminate glass and plastic structural plies for aircraft applications. Current choices are limited to plasticized polyvinyl butyral (incompatible with polycarbonate), polyurethane, and silicone. The most commonly used are true thermoplastics, but some polyurethanes and all silicones contain some cross-linking. (1) Interlayer materials are considered to be [...]
A device for preventing leakage of gas on the gas generator shaft in a turbine. A labyrinth consists of a series of
A method of returning oil from the engine to the oil
The speed at which a propeller, rotor, or some other rotating part rotates; measured in revolutions per minute