Method for modeling a housing of a puller rudder

By using 3D modeling methods, the accuracy and efficiency issues in the design of the azimuth thruster casing were resolved, enabling rapid modeling and high-precision manufacturing of the casing, reducing manufacturing errors, and improving production design quality and efficiency.

CN115510559BActive Publication Date: 2026-09-15THE 711TH RES INST OF CHINA STATE SHIPBUILDING CORP
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Patent Information

Application Number
CN202211188727.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-28
Publication Date
2026-09-15
Estimated Expiration
2042-09-28

AI Technical Summary

Technical Problem

The traditional azimuth thruster has a large shell structure, which leads to reduced propulsion performance. Furthermore, it is difficult to accurately establish a streamlined shell design for the pull-type azimuth thruster, and the manual layout method has problems of large errors and low efficiency.

Method used

A 3D modeling method is adopted. By determining the reference surface profile data of the shell, propeller shaft and tail fin, interpolation processing is performed to establish a 3D model. Then, combination and smooth transition surface processing are performed to ensure the accuracy and efficiency of the model.

Benefits of technology

It enabled rapid and accurate modeling of the pull-type propeller housing, reduced on-site manufacturing problems, improved the quality, accuracy and efficiency of design and production, and discovered interference problems between the model and the propeller and hull structure.

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Abstract

The application discloses a modeling method of a shell of a pull rudder propeller, and relates to the technical field of ship production design. The modeling method of the shell of the pull rudder propeller comprises the following steps: S10, determining the reference surfaces of a shell body, a propeller shaft and a tail fin, respectively, and the lofting value data of the reference surfaces, and performing interpolation processing on the lofting value data which is not smooth; S20, importing the lofting value data into three-dimensional modeling software, and establishing three-dimensional models of the shell body, the propeller shaft and the tail fin, respectively; S30, combining the three-dimensional models of the shell body, the propeller shaft and the tail fin, establishing a complete shell surface, and finally completing the modeling and lofting of the shell surface; and S40, using the shell surface to intersect with a ship body outer plate surface, and obtaining a transition surface which is completely smooth and smooth with the ship body outer plate.
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