Roll control thruster and hybrid rocket comprising same

A roll control thruster configured to control an attitude of a launch vehicle by using an oxidizer filled in an oxidizer tank, the roll control thruster comprising:

• a thruster tank in which a portion of the oxidizer stored in the oxidizer tank is used and filled;
• a thruster line configured to branch from the thruster tank and form a supply path of the oxidizer filled in the thruster tank;
• a thruster valve provided in the thruster line and configured to open and close the thruster line or to adjust an opening degree of the thruster line;
• a thruster module configured to be connected to the thruster line and to spray the oxidizer supplied through the thruster line to control the attitude of the launch vehicle;
• a thruster control module configured to control an operation of the thruster valve and supply of the oxidizer to the thruster module;
• at least one oxidizer supply unit configured to pump the oxidizer filled in the oxidizer tank and to transfer the oxidizer to a combustion chamber which generates thrust of the launch vehicle;
• a transfer line configured to connect the oxidizer supply unit with the thruster tank;
• a thruster tank pumping module configured to be provided in the transfer line and to pump oxidizer of the transfer line, the thruster tank pumping module being driven by a thruster motor,
• wherein the oxidizer supply unit comprises:
• an oxidizer pump configured to pump an oxidizer filled into the oxidizer tank from an outside of the oxidizer tank;
• an electric motor configured to operate the oxidizer pump, the electric motor being electrically coupled to a battery;
• the battery configured to supply power to the electric motor;
• an oxidizer line configured to connect the oxidizer tank with the oxidizer pump;
• a discharge line configured to connect the oxidizer pump with the combustion chamber such that pressurized oxidizer is combusted in the combustion chamber;
• a heat dissipation module configured to branch from the oxidizer line upstream of the oxidizer pump and to dissipate heat from the electric motor and the battery with the oxidizer;
• and
• a thruster branch module configured to branch from the heat dissipation module and to be connected to the thruster tank through the transfer line.