| AL-21 | |
|---|---|
 | |
| Lyulka AL-21F3 engine, Airforce Museum of the Bundeswehr; Berlin-Gatow | |
| Type | Turbojet |
| National origin | Soviet Union |
| Manufacturer | NPO AL, Salyut, Perm PMZ, OMKB, UMPO, MMP Chern |
| Major applications | Sukhoi Su-17 Sukhoi Su-24 |
The Lyulka AL-21 is an axial flow turbojet engine created by the Soviet Design Bureau named for its chief designer Arkhip Lyulka.
The AL-21 is closely similar in technology to the General Electric J79 first flown in 1955, which was the first engine for supersonic flight, using a variable stator. [1]
It is generally described as being in the "third generation" of Soviet gas turbine engines which are characterized by high thrust-to-weight ratios and the use of turbine air cooling. [2]
The AL-21 entered service in the early 1960s. Later designed the AL-21F3, it was used in the Sukhoi Su-17, Sukhoi Su-24, Ground-attack variant Mikoyan-Gurevich MiG-23, and Sukhoi T-10 (Sukhoi Su-27 prototype).
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