A turboshaft engine is a form of gas turbine which is optimized to produce shaft power, rather than jet thrust. In principle a turboshaft engine is similar to a turbojet, except the former features additional turbine expansion to extract heat energy from the exhaust and convert it into output shaft power. Ideally there should be little residual thrust energy in the exhaust and the power turbine should be free to run at whatever speed the load demands. Overview The general layout of a turboshaft… (More on Turboshaft)