| 摘要 |
According to an embodiment of the invention, a system for controlling a pitch angle of a propeller comprises a propeller shaft, a push pull hub and a cylinder. The push pull hub is included in the outside of the propeller shaft to be slid, includes a piston protruding in the vertical direction, and has a rear end connected to the propeller to control the pitch angle of the propeller. The cylinder is included in the outside of the push pull hub to allow the piston to pass through and allows oil to be introduced and be discharged to move the piston frontward and backward. According to the present invention, the pitch angle of the propeller is controlled depending on the introduction and discharge of oil, and the push pull hub for controlling the pitch angle of the propeller and the cylinder are included in the rear end of a gear box and are also included in the exterior of the gear box to prevent the interior of the gear box from interfering. Therefore, the propeller pitch angle control system can have a simplified structure. |
