Date of Award
2013
Document Type
Thesis
Publication Status
Version of Record
Submission Date
October 2026
Thesis/Dissertation Advisor [Chair]
von Ellenrieder, Karl
Abstract
The relationship between cross-flow at a waterjet inlet and delivered thrust is not fully understood. A direct thrust measurement system was designed for a waterjet propelled, free running USV. To induce sway velocity at the waterjet inlet, which was considered equivalent to the cross flow, circles of varying radii were performed at Reynolds Numbers between 3.48 x 106 and 8.7 x 106 and radii from 2.7 to 6.3 boat lengths. Sway velocities were less than twenty percent of mean forward speed with slip angles that were less than 20°. Thrust Loading Coefficients were compared to sway as a percent of forward speed. In small radius turns, no relationship was seen, while in larger radius turns, peaks of sway velocity corresponded with drops in thrust, but this was determined to be caused by reduced vehicle yaw in these intervals . Decoupling of thrust and yaw rate is recommended for future research.
Extent
133 p.
Recommended Citation
Grimes, John A., "A direct thrust measurement system for a waterjet propelled, free running USV" (2013). Electronic Theses and Dissertations 2010 - 2019. 676.
https://digitalcommons.fau.edu/etd_general_6/676
Identifier
FA0004023
Comments
Thesis (M.S.)--Florida Atlantic University, 2013.|Thesis (M.S.)--Florida Atlantic University, 2013.