A gas turbine engine that is similar in operation to a turboprop engine but instead of being used to power a propeller is used through a transmission system for powering other devices (as helicopter rotors and pumps).

涡轮轴发动机(一种气体涡轮发动机，操作上与涡轮螺旋浆发动机相似，但非用于驱动螺旋浆，而是通过一传输系统以驱动其他装置，如直升机旋翼和唧筒等)。