the compressor and turbine stages being concentric

Full Title

Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C5/00) > having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16) > the compressor comprising only axial stages (F02C3/10 takes precedence) > the compressor and turbine stages being concentric