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Sakaki A, Ghassemi H, Aslansefat K, Sadeghian M, Optimization of the drag force of planing boat with trim control system using genetic algorithm, American J. of Mech. Eng., 2017, 5(4), 161-166.

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Article

Obtaining the Practical Formula for the Trim-tab Dimensions to Reach the Minimum Drag for Planing Boat

1Department of Maritime Engineering, Amirkabir University of Technology, Tehran, Iran


American Journal of Mechanical Engineering. 2020, Vol. 8 No. 4, 163-171
DOI: 10.12691/ajme-8-4-3
Copyright © 2020 Science and Education Publishing

Cite this paper:
Matin Mohebbi, Mohammad A. Ghassemi, Hassan Ghassemi. Obtaining the Practical Formula for the Trim-tab Dimensions to Reach the Minimum Drag for Planing Boat. American Journal of Mechanical Engineering. 2020; 8(4):163-171. doi: 10.12691/ajme-8-4-3.

Correspondence to: Matin  Mohebbi, Department of Maritime Engineering, Amirkabir University of Technology, Tehran, Iran. Email: matinmoheby@yahoo.com

Abstract

Trim-tab is a device for controlling and stabilizing planing boats in different sea conditions. This paper presents to find dimensions of the trim-tab at various speeds of the boat to reach the minimum drag. The speed of the boat is from15 m/s to 30m/s. Drag of the boat is calculated by Stavisky’s method. The minimum drag is found based on the optimum the trim angle. A Matlab program code is prepared for these calculations and all the all results such as drag, dimensions of the trim-tab, longitudinal center of pressure and time angle at different speeds of the boat are presented and discussed.

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