Exploiting asymmetric velocity profiles to improve undulatory propulsion of fin-based underwater vehicles
Year: 2024
Type: dissertation
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.
DOI: 10.17918/00010787
Authors: Anthony C. Drago, James Tangorra
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4406907553