This paper presents the development of 2-stage powerturbine for turboshaft engine. This engine is a latest turboshaft engine which is upgraded from T700 engine series. Its power class is designed to fit the helicopter mission. And it is a rear-drive e...
This paper presents the development of 2-stage powerturbine for turboshaft engine. This engine is a latest turboshaft engine which is upgraded from T700 engine series. Its power class is designed to fit the helicopter mission. And it is a rear-drive engine to fit into the helicopter. The speed of powerturbine increased about 13% from its predecessor and the its rotating direction is contrary to that of GGT. Despite these restrictions, the powerturbine is designed to have longer life and higher efficiency than its predecessor. The efficiency of powerturbine increased about 1.4 % and its life has increased more than 20 %.