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AL-7
Lyulka AL-7F turbojet engine at the Polish Aviation Museum
Type	Turbojet
Manufacturer	Lyulka
First run	1952
Major applications	Sukhoi Su-7 Tupolev Tu-28

The Lyulka AL-7 was a turbojet designed by Arkhip Mikhailovich Lyulka and produced by his Lyulka design bureau. The engine was produced between 1954 and 1970.^[1]

Design and development

The AL-7 had supersonic airflow through the first stage of the compressor. TR-7 prototype developing 6,500 kgf (14,330 lb_f, 63.7 kN) of thrust was tested in 1952, and the engine was initially intended for Ilyushin's Il-54 bomber. The afterburning version AL-7F was created in 1953. In 1957, Su-7 'Fitters' equipped with AL-7F exceeded Mach 2 at 18,000 m (70,900 ft), which lead to production of Su-7B and Su-9 'Fishpot' equipped with this engine. The engine was adopted for Tu-128P 'Fiddler' in 1960, and it was used in the AS-3 'Kangaroo' cruise missile. The Beriev Be-10 jet flying boat used a non-afterburning AL-7PB with stainless steel compressor blades.

Specifications (AL-7F)

General characteristics

• Type: Afterburning turbojet
• Length:
• Diameter:
• Dry weight:

Components

• Compressor: 9-stage axial compressor

Performance

• Maximum Thrust:
  
  • 67.1 kN (15,075 lbf) military power
  • 98.1 kN (22,050 lbf) with afterburner
• Overall pressure ratio: 9.5:1
• Turbine inlet temperature: 860 °C (1,580 °F)
• Specific fuel consumption: 98.9 kg/(h·kN) (0.97 lb/(h·lbf))
• Power-to-weight ratio:

See also

• Lyulka AL-21

References

Notes

Bibliography

External links

MZAK Pictures - AL-7 (cs)