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The AL-55/I - turbofan engine, designed for new generation trainer and light combat aircraft.


• NPO Saturn: core, final assembly, power plant integration, ground and flight tests; leading contractor of engine development; associate contractor of licensed production

• UMPO (UEC): low pressure spool; associate contractor of engine development; leading contractor of licensed production

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Design features

• 3-stage low pressure compressor

• 5-stage high pressure compressor

• annular combustor

• 1-stage high pressure turbine

• 1-stage low pressure turbine


Engine AL-55I
Maximum combat mode thrust, kgf 1 760
Maximum training mode thrust, kgf 1 500
Inlet diameter, m 0.462
Length, m 1.950


• possibility of engine use for single-engine aircraft

• engine modular design provides high maintainability and low operating cost

• up-to-date digital engine control system with backing up hydromechanical channel provides flight safety and high diagnostic capability

• integrated starter-generator provides engine start and electric power supply for aircraft systems

• single AL-55 HP Core enables development of engine family for various applications, incl. afterburning and thrust vectoring modifications

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The family of engines, based on the AL-55 HP core, can power various types of aircraft:

• basic and advanced trainers
• unmanned aerial systems (UAS)
• light combat aircraft and light front-line fighters

On the base of AL-55 HP Core, NPO Saturn has created the АL-55I engine for basic trainer aircraft developed by foreign Customer.

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