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Lyulka AL-7
Lyulka TR-7



The Lyulka AL-7 was a 9 stage supersonic compressor turbojet designed by Arkhip Mikhailovich Lyulka and produced by his Lyulka design bureau. Produced between 1954 and 1970, the AL-7 had supersonic airflow through the first stage of the compressor. The 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. 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.


Ilyushin Il-54
Sukhoi Su-7B
Tupolov Tu-98



Type: Afterburning turbojet
Dry weight: 2,010 kg (4,430 lb)
Compressor: 9-stage axial compressor
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 deg C (1,580 deg 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



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