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Explore the innovative design elements of RiverShark submarine by HSRW Submarine Team in Germany. Learn about Biomimetic Fins inspired by sailfish, drive mechanism, safety features, and failed designs with a focus on improvement.
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RiverShark HSRW Submarine-Team, Germany 2013
RiverShark • The Hull • The Concept • The Fins • The Drive • The Arms • The Scale • The Motion • The Improvement • The Pitch Limiter • The Springs • The Idea • Safety Features • Problems . . . • Failed Designs • Thank You ISR
BiomimeticFins • inspired by sailfish • chord 20 cm / 160 cm span -> 1:8 aspect ratio • max. thickness 25 mm
BiomimeticFins wing profile • NACA 0020 airfoil • angle of attack 15°-25° • lift coefficient 1.89 -3.08
BiomimeticFins fin material • glass fiber reinforced polyurethane foam(Coosa nautical 20 / COOSA Composites LLC) • high strength to weight ratio • 45% lighter than plywood • density of 320 kg/m3
BiomimeticFins • fin material cut by CNC • fiberglass sheet in midsection as frame
Safety Features • Floating hatch - Diver • Breakable hatch - Shoes • Easy access windows • Non-jamming buoy • Emergency Air
Problems . . . • Lower Fin Trolley • Wobbling Mechanism • Front End Buoyancy • Sharp Fin Tips • Buoy Relocation