Patent ID: 8840378

Claim:
A thrust generating apparatus provided in a liquid and configured to generate thrust by ejecting the liquid, the thrust generating apparatus comprising: an annular stator at which a plurality of coils are provided; a rotor capable of rotating positively and negatively and including a plurality of magnets, a rotor core to which the magnets are attached and which is constituted by a magnetic body, and an annular rotor main body to which the rotor core is attached; a propeller blade provided on a radially inner side of the rotor main body and formed integrally with the rotor main body; a first liquid lubricated bearing provided on one side of the rotor main body, opposed to one side surface and outer peripheral surface of the rotor main body, and configured to support a thrust load and a radial load; a second liquid lubricated bearing provided on an other side of the rotor main body, opposed to an other side surface and outer peripheral surface of the rotor main body, and configured to support the thrust load and the radial load; a first liquid intake port configured to open toward a portion of a channel on the one side of the rotor main body, the portion being located on one side of the propeller blade; a second liquid intake port configured to open toward another portion of the channel on the other side of the rotor main body, the another portion being located on an other side of the propeller blade; a first liquid conveyance tube through which the liquid having flowed through the first liquid intake port is guided to the second liquid lubricated bearing; and a second liquid conveyance tube through which the liquid having flowed through the second liquid intake port is guided to the first liquid lubricated bearing.