American Journal of Mechanical Engineering
ISSN (Print): 2328-4102 ISSN (Online): 2328-4110 Website: Editor-in-chief: Kambiz Ebrahimi, Dr. SRINIVASA VENKATESHAPPA CHIKKOL
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American Journal of Mechanical Engineering. 2020, 8(4), 163-171
DOI: 10.12691/ajme-8-4-3
Open AccessArticle

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

Matin Mohebbi1, , Mohammad A. Ghassemi1 and Hassan Ghassemi1

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

Pub. Date: November 12, 2020

Cite this paper:
Matin Mohebbi, Mohammad A. Ghassemi and 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


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.

trim-tab drag planing boat Stavisky’s method

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