MTR MTR390

The MTU Turbomeca Rolls-Royce MTR390 is a turboshaft developed for light helicopters by MTU Turbomeca Rolls-Royce (MTR), designed to power helicopters in the weight range of 5 to 7 tonnes in both single and twin engine configurations. Test runs began in 1989 and the first test flight was performed in 1991, with military certification in May 1996 and civil approval in June 1997. Its only application so far is the Eurocopter Tiger. The engine has a two-stage centrifugal compressor, an annular combustor and one high-pressure and two low-pressure turbine stages. The enhanced MTR390-E variant, developed with Spain's ITP, delivers 1,094 kW at take-off and has a dry weight of 179 kg.