AI-25TLSH
This turbofan is a version of the mass-produced AI-25TL engine mounted in the L-39 and K-8J trainer aircraft. It can power combat-trainer modifications of these aircraft and be adapted to power other existing trainer and combat trainer aircraft and those under development to be used as light attack aircraft. In this respect, a combat power rating of enhanced maximum thrust, employed for strike operations, has been additionally introduced and engine acceleration time has been substantially reduced.
Main advantages:
- High reliability ensuring the highest possible flight safety, which is proved by the fact that around 5,000 AI-25TL engines are operated in 37 countries, their total operating time approaches 6,000,000 hours
- High level of gas-dynamic stability at external disturbances, including those when launching onboard weapons
- High fuel efficiency
- Insignificant labor and time input for maintenance
- Minimum life cycle cost.
The engine preserves the previous design of automatic control system to provide retrofitting the earlier produced L-39 and K-8J aircraft. At a customer's request, the engine can be modified to be controlled by a FADEC system.
Basic specifications:
| combat | training | |
Maximum power condition (H=0, M=0, ISA): | ||
| Thrust, kgf (kN) | 1850 (18.15) | 1720 (16.87) |
| Specific fuel consumption,kg/kgf·h (kg/kN·h) | 0.59 (60) | |
| Maximum power condition (H=0, M=0.6, ISА+15°C): | ||
| Thrust, kgf (kN) | 1250 (12.26) | 1100 (10.79) |
| Cruise power condition (Н=6 km, М=0.483, ISА): | ||
| Thrust, kgf (kN) | 515 (5.05) | 515 (5.05) |
| Specific fuel consumption, kg/kgf·h (kg/kN·h) | 0.79 (80.6) | 0.79 (80.6) |
| Acceleration time, s | max 6 | max 6 |
| Dry mass, kg | 350 | 350 |
| Engine inlet diameter, mm | 600 | 600 |
| Lenght (without extension pipe), mm | 2032 | 2032 |
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