Experimental Determination of an AUV's Drag Resistance in
a Towing Tank
Name
hart_kennedy-leighken-sb-meche-2024-thesis.pdf
Description
Thesis PDF
Size
1010.75 KB
Format
Adobe PDF
Checksum (MD5)
5607319893fdaca829b7a06589e75382
Author(s)
Hart-Kennedy, Leighton
Advisor(s)
Triantafyllou, Michael
Date Issued
May 2024
Publisher
Massachusetts Institute of Technology
Abstract
The market for AUVs has expanded dramatically over the past several decades, a trend that is expected to continue over the next 10 years. AUVs operate autonomously using a dynamic controller that accounts for the dynamics of the system, including the drag resistance of the AUV. This paper examines the method of using a calm-water resistance test in a towing tank to determine the resistance of an AUV. A scale model of a survey class AUV was created using a 3d printer and mounted in a towing tank. The model was towed, and the resistance force recorded for a range from 0.3 to 0.9 m/s. An estimation of the AUV’s resistance was determined using this data. The average drag coefficient was calculated at each speed using this data. The average drag coefficient was fit to a linear curve with the logarithm of the Reynolds number of the form Cd = a∗log₁₀(Re) + b where a = −0.0771 ± 0.0507 and b = 0.484 ± 0.277.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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