DOUBLE-FLOW AND VARIABLE-CYCLE TURBO-REACTOR PROVIDED WITH COUNTERTURNING TURBINES

摘要

It is disclosed a double-flow turbo-reactor characterised by a high-pressure turbine 7 (a turbine moving the fan 2) and a low-pressure turbine 8 (a turbine moving the air-compressor 4). Said turbines are inversely turning while no arrangement of vanes-guides of the stator is interposed. There are foreseen changeable vanes-guides 1 at the entry of the fan 2 and changeable vanes-guides 3 at the entry of the air-compressor 4. In the simple version of the turbo-motor, the surface of the nozzle 9 ofthe inside stator is variable and so is the common nozzle 9 of the inside and outside stator in the composite version of the turbo-motor; in both cases, the change of parameters of the thermodynamic cycle and the improvement of the turbo-motor features become possible through the foregoing variable-surface nozzle.