Gas turbines are engines within which the chemical energy of the fuel is converted
either into mechanical energy in terms of shaft power or into kinetic energy. Gas
turbines that produce shaft power are power generation gas turbines. Gas turbines
that convert the fuel energy into kinetic energy are used for generation of thrust to
propel an aircraft. The conversion of fuel energy into shaft power or propulsive force,
requires interaction of several components of the engine, within each of them a chain
of energy conversion takes place.