A gas turbine engine is a type of internal combustion engine that uses a turbine to generate power. It consists of several major components, including a compressor, combustion chamber, turbine, and nozzle. The compressor compresses air, which is then mixed with fuel and ignited in the combustion chamber. The hot gases produced by the combustion process expand through the turbine, which extracts energy from the gases and drives the compressor. The remaining energy is expelled through the nozzle, producing a high-velocity exhaust gas that generates thrust.