PZL Rzeszów SO-3
The PZL Rzeszów SO-1 and PZL Rzeszów SO-3 are Polish turbojet engines designed by the Instytut Lotnictwa (Institute of Aeronautics ) and manufactured by WSK PZL Rzeszów, to power the PZL TS-11 Iskra jet trainer. Thirty SO-1s were built, this being superseded by the improved SO-3, of which a further 580 were built.[1] The engine has a seven-stage compressor, annular combustion chambers, and a single-stage turbine.
| SO-1/SO-3 | |
|---|---|
 | |
| SO-3W engine on display at the Polish Aviation Museum | |
| Type | Turbojet |
| National origin | Poland |
| Manufacturer | WSK PZL Rzeszów |
| First run | November 1968 |
| Major applications | PZL TS-11 Iskra |
| Number built | 580 |
Variants
- SO-1
- Original production. Overhaul life 200 hours.[2]
- SO-3
- Improved version of SO-3, intended for tropical use. Modified compressor, combustion chamber and turbine.[2] Overhaul life 400 hours.[3]
- SO-3W22
- Modified version for PZL I-22 Iryda, 10.79 kN (2,425 lbf) rating, renamed PZL-5.[4]
Applications
Specifications (SO-3)
Compressor intake
Data from Jane's All The World's Aircraft 1988-89.[2]
General characteristics
- Type: Turbojet
- Length: 2,157 mm (84.7 in)
- Diameter: 707 mm (27.8 in) width, 764 mm (30.1 in) height
- Dry weight: 321 kg (708 lb)
Components
- Compressor: Seven-stage all-steel axial compressor
- Combustors: Annular with 24 combustors
- Turbine: Single-stage axial flow
Performance
- Maximum thrust: 10.8 kN (2,425 lbf) take-off, 9.8 kN (2,205 lbf) continuous
- Overall pressure ratio: 4.8:1
- Specific fuel consumption: 29.6 g/(kN⋅s) (1.04 lb/(lbf⋅h))
- Thrust-to-weight ratio: 3.4
References
Wikimedia Commons has media related to WSK SO-3.
- Lambert 1993, p.630.
- Taylor 1988, p.699.
- "Silnik lotniczy do TS-11 ISKRA". AMW - Agencja Mienia Wojskowego. Archived from the original on 2011-07-23. Retrieved 2010-01-24.
- Taylor 1996, p.572.
- Lambert, Mark. Jane's All The World's Aircraft 1993-94. Coulsdon, Surry, UK:Jane's Data Division, 1993. ISBN 0-7106-1066-1.
- Taylor, John W. R. Jane's All The World's Aircraft 1988-89. Coulsdon, Surry, UK:Jane's Defence Data, 1988. ISBN 0-7106-0867-5.
- Taylor, Michael J. H. Brassey's World Aircraft & Systems Directory 1996/97. London:Brassey's, 1996. ISBN 1-85753-198-1.
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