University of Bath - Sulis

Design Concept Hull Transmission Propulsion – Propeller Propulsion – Non Propeller Safety Control Ergonomics Buoyancy Introduction

Dual propulsion Evolution from Seabomb Advantages: Reduced friction Improved visibility Stroke length increased Reduced inertial losses Disadvantages: Increased complexity Increased cost Design Concept

Hull Revolved NACA 0012

Dual output Double scotch yoke Transmission Bevel Gearbox Chain between gearbox and Scotch Yoke Aerofoil support rails Scotch yoke sprocket Bicycle pedals and chain drive Linear Bearings

Propulsion - Propeller Design point of 5.0knts Speed estimated with different propellers Probable 4.5knts maximum speed Final propeller provided by Duncan Propellers Ltd. [Picture of propeller]

Propulsion – Non Propeller Variable passive pitch limiter Vary fin flexibility Vary aspect ratio

Safety Safety buoy Escape hatch Strobe Viewports Antibiomimetic colour scheme

Control Foreplanes – evolution from Seabomb

Ergonomics Test rig CAD model

Buoyancy Removal of variable buoyancy Closed cell high density styrofoam

Questions Thanks very much for listening, any questions?