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AL-7
Lyulka AL-7F turbojet
Lyulka AL-7F turbojet engine at the Polish Aviation Museum

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 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 lead to production of Su-7 'Fitter' and Su-9 'Fishpot' equipped with this engine.[2][Clarification needed] 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[citation needed]

General characteristics
  • Type: Afterburning turbojet
  • Length:
  • Diameter:
  • Dry weight: 2,010 kg (4,430 lb)
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:
  • 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


See also[]

References[]

Notes[]

  1. Gunston 1989, p.100.
  2. Green, William and Gordon Swanborough. The Great Book of Fighters. St. Paul, Minnesota: MBI Publishing, 2001. ISBN 0-7603-1194-3.

Bibliography[]

  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9

External links[]

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