Biomimetic propulsion system efficiency for unmanned underwater vehicle

Area of Science:

• Robotics
• Fluid Dynamics
• Biomimetics

Background:

• Traditional underwater propulsion systems often face limitations in energy efficiency and acoustic noise.
• Biomimetic approaches offer potential for developing novel, more efficient underwater vehicles.
• Flexible fin propulsion mimics natural aquatic locomotion, promising reduced noise and enhanced maneuverability.

Purpose of the Study:

• To experimentally investigate the performance of a Biomimetic Unmanned Underwater Vehicle (BUUV) propulsion system.
• To develop a propulsion system based on single, flexible fins that minimizes hydroacoustic noise and maximizes energy efficiency.
• To identify optimal design parameters for undulating propulsion systems.

Main Methods:

• Experimental testing in a laboratory water tunnel.
• Utilizing a direct force-measured sensor for thrust quantification.
• Employing Particle Image Velocimetry (PIV) for flow analysis.
• Systematic variation of control parameters to assess performance.

Main Results:

• Comparison of generated thrust against electric energy consumption under various conditions.
• Identification of trade-offs between propulsion performance, energy use, and acoustic output.
• Generation of a set of Pareto optimal solutions for the flexible fin propulsion system.

Conclusions:

• The research provides a foundation for designing low-noise, high-energy efficiency propulsion systems for underwater vehicles.
• Pareto optimal solutions offer valuable insights into the design principles of undulating propulsion.
• Flexible fin propulsion demonstrates potential for advanced BUUV applications.