Thesis
Exploiting asymmetric velocity profiles to improve undulatory propulsion of fin-based underwater vehicles
Master of Science (M.S.), Drexel University
Sep 2024
DOI:
https://doi.org/10.17918/00010787
Abstract
This study investigates the impact of asymmetric velocity profiles on thrust and lateral forces in fin-based underwater propulsion systems. Unlike previous research, which focused on symmetric velocity profiles, this work explores the potential benefits of using asymmetric velocity profiles for propulsion; specifically increasing the velocity of the fin during the power stroke and decreasing the velocity during the recovery stroke. The experiments, conducted using a robotic caudal fin with varying fin stiffnesses, show that both mean thrust and RMS lateral forces increase as the power stroke speed intensifies. The thrust increases more significantly than lateral forces, particularly in stiffer fins. These results suggest that asymmetric velocity profiles can enhance forward propulsion efficiency, offering a novel approach to improving fin-based underwater vehicle performance.
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Details
- Title
- Exploiting asymmetric velocity profiles to improve undulatory propulsion of fin-based underwater vehicles
- Creators
- Anthony C. Drago III
- Contributors
- James Tangorra (Advisor)
- Awarding Institution
- Drexel University
- Degree Awarded
- Master of Science (M.S.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- viii, 24 pages
- Resource Type
- Thesis
- Language
- English
- Academic Unit
- College of Engineering (1970-2026); Mechanical Engineering (and Mechanics) (1970-2026); Drexel University
- Other Identifier
- 991021934414704721