Computer based original method employed to assess the force and the torque on the rudder's shaft

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Dordescu, M.^1 ; Oanta, E.^1

Constanta Maritime University, Faculty of Naval Electro-Mechanics, 104 Mircea cel Batran Street, Constanta

900663, Romania^1

关键词: New approaches;    Output data;    Spline functions;    Steering gear;    Text file;    Two directions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/4/042015/pdf
DOI  :  10.1088/1757-899X/400/4/042015

来源: IOP

【 摘 要 】

Appropriate dimensioning of the electric drives belonging to the steering gear of a ship is based on the maximum values of the torque applied on the rudder's shaft. Evaluation of the moment may be done in several ways. The paper presents a method based on dimensionless coefficients given as diagrams. To express analytically the diagrams resulted from experimental studies, we use a digitization stage followed by an interpolation process based on spline functions. The output data of this stage consist of the spline functions coefficients stored in text files using the CSV format. An original application was developed, program which considers a general balanced rudder with a parameterised balance ratio and two directions of motion, ahead and astern. The output data of the application is the moment applied on the rudder's shaft with respect to the angle of attack for the both directions of motion. We plan to continue the study by considering a general shape of the rudder, in this case being required a new algorithm. The results of the new approach may be tested using the output data of this study.