Design of a Compact ROV for River Exploration

Abstract

Remotely operated underwater vehicles (ROVs) are being extensively used in marine industry for exploration, pollution control, and military applications. With time ROVs have become smaller, less expensive, reliable and practical for small scale use. This paper presents the design of a compact low-cost ROV for river exploration with a modular structure. The ROV is neutrally buoyant which increases its efficiency. The ROV uses three thrusters for its movement inside water and has 3 degrees of freedom (DOF). A detailed 3D model is developed using SOLIDWORKS and stress analysis has been carried out to ensure it will not fail under hydrodynamic pressure. Hydrodynamic characteristics are studied using ANSYS FLUENT, which helps in determining the maximum thrust required for the vehicle propulsion and the maximum achievable velocity. The prototype is manufactured with glass fiber composite and fitted with different electronics components, sensors, and battery. The field test of the ROV is carried out in a controlled underwater environment.