Aviadvigatel PS - 90A is a Russian high-bypass commercial turbofan rated at 35,200 pounds (157 kN) thrust. It powers Russian airliners such as Ilyushin Il-96 and Tupolev Tu-204 and transport aircraft such as Ilyushin Il-76.
With the advent of new generation of Russian airliners, Aviadvigatel developed the PS - 90 to satisfy the demands of economy, performance and exhaust emissions. It represented a huge advance over previous generations of 1960s era Soviet engines. The PS - 90 is almost double the efficiency of those engines and are reasonably competitive to current generations of western engines.
It incorporate many firsts in a Russian engine with advanced technology features such as
- High-bypass turbofan design for economy
- Integrated exhaust with exhaust mixer for good efficiency
- Acoustically treated exhaust duct for low noise
- Full-authority digital engine control (FADEC)
- Long service life based on on-condition maintenance
- Modular design for ease of maintenance
It was first certified in 1992 and has been in service since.
There are three variants; the basic PS-90A, the PS-90A-76 and the improved PS-90A variant, the PS-90A2.
The PS - 90A engine is the initial variant and is standard equipment for Ilyushin Il-96-400, Tupolev-204-100/200 and the Tupolev-214. It allowed for the first time, Russian airliners to be comparable with the western airliners in terms of performance and economy. It is rated nominally at 35,200 pounds (157 kN) thrust. In terms of fuel burn it is broadly comparable to the Rolls-Royce RB211-535 series engines, which are also offered on the Tu-204.
This variant is a modification of the basic PS-90A engine. It extends service life of the large fleet of the IL-76 transport airplanes and raises their efficiency by installation of the PS-90A-76 engine instead of the D-30KP. It transformed these noisy and thirsty airplanes into new quiet, economical and extended range variant, the Ilyushin Il-76MF, capable of exceeding current regulatory requirements. It is rated nominally at 32,000 pounds (142 kN) thrust.
The PS-90A2 is an advanced derivative of the PS-90A. It has a fair proportion of western components from USA, France, Germany and Sweden. It is also lighter than PS-90A and features improved FADEC. All these improves the performance and reduce maintenance costs by 40%. Fuel consumption are at par with current western engines. Its noise levels are below the current and future regulatory requirements. It is the first Russian engine to be ETOPS-180 min rated. It is offered in new built aircraft and is completely interchangeable to the PS-90A, allowing simple upgrades on present airliners.
It has the same thrust rating as the PS-90A, 35,200 pounds (157 kN) thrust. It is also capable of 39,600 pounds (176 kN) thrust.