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 Thirty SO-1s were built, this being superseded by the improved SO-3, of which a further 580 were built. 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