TRIPLE-FLOW TURBOJET ENGINE Russian patent published in 2003 - IPC

FIELD: aviation industry; turbojet engines. SUBSTANCE: proposed triple-flow turbojet engine contains first loop connected to nozzle, second loop connected to other nozzle and closed third loop, and also heat exchange device and flow selector switch. All loops are of gas-air type. First loop has two additional heater and is made two-shaft. Heater installed before turbines mounted on second shaft is provided with heat coupling with additional heater of third loop installed before first in flow turbine of third loop, said turbine can be connected to shaft of first loop. Heater of first loop installed between turbines mounted on second shaft has heat coupling with heater of third loop located between turbines of third loop. Heat exchange device installed at outlet of first loop between one of outlets of flow selector switch, connected by inlet to outlet of last in flow turbine of first loop and nozzle of first loop, is connected to third loop between compressor and additional heater. Other outlet of flow selector switch is connected direct to first nozzle. EFFECT: increased specific power output of engine and improved reliability of its operation under different operating conditions. 1 dwg