PZL Rzeszów SO-3
Introduction 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 Thirty SO-1s were built, this being superseded by the improved SO-3, of which a further 580 were built.The engine has a seven-stage compressor, annular combustion chambers, and a single-stage turbine.
Variants ;SO-1:Original production. Overhaul life 200 hours. ;SO-3:Improved version of SO-3, intended for tropical use. Modified compressor, combustion chamber and turbine. Overhaul life 400 hours. ;SO-3W22:Modified version for PZL I-22 Iryda, 10.79 kN (2,425 lbf) rating, renamed '''PZL-5'''.
Applications * PZL TS-11 Iskra* PZL I-22 Iryda
Specifications (SO-3) Compressor intake
See also
References * Lambert, Mark. ''Jane's All The World's Aircraft 1993-94''. Coulsdon, Surry, UK:Jane's Data Division, 1993..* Taylor, John W. R. ''Jane's All The World's Aircraft 1988-89''. Coulsdon, Surry, UK:Jane's Defence Data, 1988..* Taylor, Michael J. H. ''Brassey's World Aircraft & Systems Directory 1996/97''. London:Brassey's, 1996..