The PS-90 turbofan engine features a twoshaft configuration with exhaust mixing from both ducts. It has a reverser inside the bypass duct. The engine comprises 11 modules. The single-stage fan has titanium blades. The lowpressure compressor has two stages, and the high-pressure compressor has 13 stages. The engine has a cannular combustion chamber.

The cooled high-pressure turbine has two stages, and the low-pressure turbine has four stages. The engine has a two-channel digital control system. Advanced control and monitoring system provides timely engine malfunction detection and on-condition maintenance. The unified PS-90A engine is designed to power the Tu-204, Tu-214, Tu-330, Il-76MF, Il- 76T/TD, and Il-96-300 aircraft. In 1992 the engine got the Interstate Aviation Committee and ICAO noise and emission certificates. Introduction of more stringent ICAO requirements will not pose a problem for PS-90A-powered aircraft as only minor upgrading of the standard engine and air intake noise-absorption system will be required.

Variants

The PS-90A-76 derivative has an extended service life and improved acoustic and emission characteristics. It is designed to power the Il-76MF aircraft, and can also be installed on the Il-76T/TD and Il-86 aircraft. The PS-90A2 derivative boasts enhanced reliability, improved efficiency, and simplified maintenance.