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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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Presentation Transcript
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
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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