FIELD: machine building.
SUBSTANCE: proposed turbomachine comprises gas turbine engine equipped with air blower arranged in symmetry with turbomachine lengthwise axis and annular nacelle arranged in symmetry with turbomachine lengthwise axis and embracing gas turbine engine to make annular channel for cold flow passage. Nacelle front edge embraces aforesaid air blower while its rear edge forms turbine waste exhaust tube. Aforesaid tube features cross-section corresponding to that of its throat. Additionally, turbomachine comprises means for bleeding air from channel for cold airflow circulation arranged directly ahead of waste gas tube throat section, means of discharging waste gases arranged directly behind waste gas tube throat, means of deliver bled air at the point directly behind waste gas tube throat outlet section. Bled air delivery is performed by indirect opening of throat section. Turbomachine comprises also the means for bleeding and compressing external air and this for delivery of bled air at the point nearby throat outlet section in, in fact, perpendicular or even opposite direction to airflow circulating inside cold airflow channel to shut off said throat by aerodynamic locking of airflow rate in said throat. Means of external air bleeding is made up of one external air inlet hole extending into turbomachine chamber and communicated with pump inlet equipped with bulk elasticity module fitted in gas turbine engine inner chamber.
EFFECT: invariable-size waste gas exhaust tube with cross section varying subject to operating conditions.
8 cl, 4 dwg
