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Lyulka AL 7

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Lyulka AL-7

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.

Contents

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 lbf, 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 April 1956, the Sukhoi S-1 prototype equipped with AL-7F exceeded Mach 2 at 18,000 m (70,900 ft), which led to production of Su-7 'Fitter' and Su-9 'Fishpot' equipped with this engine. Later, the engine was adopted for Tu-128 'Fiddler' in 1960, and for 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)

Data from

General characteristics

  • Type: Afterburning turbojet
  • Length: 6650 mm
  • Diameter: 1300 mm
  • Dry weight: 2,010 kg (4,430 lb)

    • Components

  • Compressor: Single-spool turbojet 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:
  • 95.0 kg/(h·kN) (0.94 lb/(h·lbf)) at idle
  • 98.9 kg/(h·kN) (0.97 lb/(h·lbf)) military power
  • 229.0 kg/(h·kN) with afterburner
  • Power-to-weight ratio: 3.4

    • References

    Lyulka AL-7 Wikipedia
    (Text) CC BY-SA