Selection of System Characteristic of Turbo-Compressor Package Based on Efficiency Analysis according to Full-Scale Test Results. Part IV. Analysis of System Characteristics of Turbo-Compressor Package GPA-C-6,3A /56-1,45 and Possibility of Conditions Opt - V. P. Parafejnik; I. N. Tertyshnyj; S. A. Prilipko; A. A. Rjabov (Journal of mechanical engineering, 2017)