Stationary gas turbines are continuously flowed through fixed-drive machines with high power densities, meaning that they deliver a large amount of energy in relation to their size and weight. The compact design involves the core components: compressor, combustor and turbine. The combustion process takes place at a pressure generated by the compressor and the airflow including the products of combustion (and excess air) is then delivered to the turbine which drives the compressor as well as generating power to the generator or other external equipment depending on application.