ELECTRIC PUMP CYCLE LIQUID ROCKET ENGINE HAVING COOLING STRUCTURE OF ELECTRIC PART

摘要

The present invention relates to an electric pump cycle liquid rocket engine having a cooling structure of an electric unit, comprising: a fuel supply unit in which fuel is accommodated; An oxidizing agent supply unit in which the oxidizing agent is accommodated; A combustion unit for combusting the fuel using the fuel supplied from the fuel supply unit and the oxidizing agent supplied from the oxidizing agent supply unit; A pump unit for pumping the fuel to the combustion unit; An electric unit that provides a driving force to the pump unit so that the pump unit can be electrically operated; A fuel pressurizing unit receiving pressurized gas and supplying pressurized gas to the fuel supply unit so that the fuel can be supplied to the combustion unit; And supplying pressurized gas to the oxidizing agent supply unit so that the pressurized gas is accommodated, and the oxidizing agent is supplied to the combustion unit, and the pressurized gas is supplied to the transmission unit so that heat generated from the transmission unit is absorbed by the pressurized gas. An oxidizing pressure reducing unit provided to pass through, wherein the electric unit includes a motor driving the pump unit, a battery supplying electric energy to the motor, and an inverter converting power of the battery and supplying it to the motor. According to the present invention, it is possible to effectively cool the electric motor with the gas for pressurizing the oxidizing agent.