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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. The Hull. The Concept. The Fins.

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Rivershark

RiverShark

HSRW Submarine-Team, Germany

2013


Rivershark1
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





Biomimetic fins
BiomimeticFins

  • inspired by sailfish

  • chord 20 cm / 160 cm span -> 1:8 aspect ratio

  • max. thickness 25 mm


Biomimetic fins1
BiomimeticFins

wing profile

  • NACA 0020 airfoil

  • angle of attack 15°-25°

  • lift coefficient 1.89 -3.08


Biomimetic fins2
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


Biomimetic fins3
BiomimeticFins

  • fin material cut by CNC

  • fiberglass sheet in midsection as frame






The improvment
The Improvment





Safety features
Safety Features

  • Floating hatch - Diver

  • Breakable hatch - Shoes

  • Easy access windows

  • Non-jamming buoy

  • Emergency Air


Problems
Problems . . .

  • Lower Fin Trolley

  • Wobbling Mechanism

  • Front End Buoyancy

  • Sharp Fin Tips

  • Buoy Relocation




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