What additional components are required for a gas turbine to function in propulsion?

For a gas turbine to function in propulsion, it requires a power turbine and a reduction gear. The power turbine extracts energy from the high-speed exhaust gases produced by the gas turbine core and converts it into useful mechanical work for propulsion. This mechanical work can then be transmitted to the propeller or rotor through a reduction gear, which adjusts the rotational speed to optimize performance.

While fuel pumps and ignition systems, compressors and exhaust systems, as well as turbochargers and heat exchangers, are essential components in different contexts of gas turbines, they do not specifically address the needs for propulsion. The focus of propulsion systems is to efficiently convert the energy from combustion into thrust or mechanical output, which is directly supported by the combination of a power turbine and a reduction gear.