02 June 2014
The concept incorporates a high-rotating generator with a rotor directly connected to the shaft of the gas turbine engine. Modern APU generators rotate at speeds of 12,000 to 24,000 rpm, whereas the new APU-120 performs at 40,000 to 60,000 rpm.
The APU-120 has a number of other advantages: high reliability, simple design, operational temperatures ranging from -55 to +55C and lower operational costs due to the flexible FADEC-based control system, as well as a 20% reduction in weight and a 15% reduction in size.
The cutting edge equipment was developed for new generation aircraft such as the medium-range MS-21. The APU supplies power to the aircraft’s electric components, radio equipment and air conditioning during parking and taxiing, as well as providing power for the main engine start-up.
The APU-120 is currently undergoing front-end engineering design. The first prototype will be ready by the end of 2015, with serial production scheduled for 2017. The preliminary cost of one APU will be around 10.5M roubles.
The APU-120 is being developed and manufactured by Aviation Equipment at the Gidravlika facility in Ufa, which supports the entire life cycle of the product including manufacturing, after-sales support and maintenance.