TheTurbomeca Turmo is a family of Frenchturboshaft engines manufactured for helicopter use. Developed from the earlierTurbomeca Artouste, later versions delivered up to 1,300 kW (1,700 shp). Aturboprop version was developed for use with theBréguet 941 transport aircraft.
The Turmo was initially developed with a single-stage centrifugal compressor, annular combustion chamber and single stage turbine. Power output was from a single-stage free power turbine and was initially 200 kW (270 hp).[1]
During early post-warhelicopter development, the use of cold and hot rotortip-jets was widely investigated. To provide large mass-flow air for efficient operation of the tip-jets, Turbomeca developed a gas turbine driven gas producer, powered by the free power-turbine of the Turmo to deliver the required gas flow.[1]
Turboprop engine with two axial stages, one centrifugal compressor stage and two free power turbine stages, rated at 1,300 kW (1,800 hp) at 32,000 rpm.
