Lyulka AL-21
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(Redirected from Lyulka AL-21F)
The Lyulka AL-21 is an axial flow turbojet engine created by the Soviet company named for its chief designer Arkhip Mikhailovich Lyulka (1908-1984).
It is strongly suspected that AL-21F was derived from the General Electric J79 engine recovered from wrecked US aircraft in Vietnam since it shares a similar layout and has J79's then-unique variable stator blades. AL-21 entered service in the early 1960's. With later marks (AL-21F-3) it was used in the Sukhoi Su-17M "Fitter", Sukhoi Su-24 "Fencer", early Mikoyan-Gurevich MiG-23 "Flogger", and Sukhoi T-10 (Sukhoi Su-27 "Flanker" prototype). A non-afterburning version powered the Yakovlev Yak-38 "Forger" VTOL fighter.
[edit] Specifications (AL-21F-3)
General characteristics
- Type: Afterburning turbojet
- Length: 5,300 mm (209 in)
- Diameter: 1,000 mm (39 in)
- Dry weight: 1,700 kg (3,740 lb)
<h3>Components
- Compressor: 14-stage axial compressor with variable stator blades
<h3>Performance
- Thrust:
- 76.4 kN (17,175 lbf) dry
- 109.8 kN (24,675 lbf) with afterburner
- Overall pressure ratio: 14.75:1
- Turbine inlet temperature: 1,100 °C (2,000 °F)
- Specific fuel consumption:
- 77.5 kg/(h·kN) (0.76 lb/(h·lbf)) at idle
- 87.7 kg/(h·kN) (0.86 lb/(h·lbf)) at maximum military power
- 189.7 kg/(h·kN) (1.86 lb/(h·lbf)) with afterburner
- Thrust-to-weight ratio: 64.7 N/kg (6.6:1)</li>
- Life expectancy: 1,800 hours
