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NATURE AND NAVAL DESIGN a practical approach

NATURE AND NAVAL DESIGN a practical approach. “ There is a book opened to all the eyes : Nature ” Rousseau. Iñigo Echenique Naval Architect. GIJON May 2007. Traditional boats convergent evolution. Gamela from La Guardia. RIVER BOAT I C, AC Carving in roman grave.

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NATURE AND NAVAL DESIGN a practical approach

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  1. NATURE AND NAVAL DESIGN a practical approach “Thereis a bookopenedtoalltheeyes: Nature” Rousseau Iñigo Echenique Naval Architect GIJON May 2007

  2. Traditionalboatsconvergentevolution Gamelafrom La Guardia RIVER BOAT I C, ACCarving in roman grave GamelafromCorujo IÑIGO ECHENIQUE 2010

  3. TRADITIONAL BOATSadaptation Sailclew Shroud and halyard Sheet IÑIGO ECHENIQUE 2010

  4. TRADITIONAL BOATSadaptation Boats in Feroeislands Dorna xeiteira IÑIGO ECHENIQUE 2010

  5. TraditionalBoatsirmandiña vs moderncruise IÑIGO ECHENIQUE 2010

  6. GRAY PARADOX Dolphinspeed not compatible withthevalues of thehydrodinamicresistance IÑIGO ECHENIQUE 2010

  7. GRAY PARADOX • 7 times largermuscleefficiency … IÑIGO ECHENIQUE 2010

  8. Resistance analysis Form factor. Nature of themovement Skinproperties. Kramer HIGH LAMINARITY OF THE FLOW BoundaryLayerimages Latz y Rohr IÑIGO ECHENIQUE 2010

  9. DOLPHIN SKIN 1 • Forma exterior deformab. • Proteína viscosa subdérmica • Músculos cutáneos muy desarrollados • Alta sensitividad de la piel • Control activo de forma Sección piel delfín Piel artificial. Kramer IÑIGO ECHENIQUE 2010

  10. LA PIEL DEL DELFIN 2 • Rugosidad cutánea • Efecto en el Cd Sección transversal • Distribución de la rugosidad IÑIGO ECHENIQUE 2010

  11. ANALISIS PROPULSIVO • Características aleta caudal • Angulos de ataque elevados • Número de Reynolds alto • Flexibilidad limitada IÑIGO ECHENIQUE 2010

  12. CARACTERISTICAS del TIMON del VELERO Advantages as lifting surface 1.- Highaspect ratio posibilities. 2.- Low t/c profiles 3.- Optimisation of theangle of attack Disadvantages 1.- Stalling 2.- Highprofileresistance 3.- Aeration IÑIGO ECHENIQUE 2010

  13. PERFIL DE LA ALETA CAUDAL DEL DELFIN MULAR - Highstallangles - Largevalue of Cl-Cd forhighangles IÑIGO ECHENIQUE 2010

  14. ENSAYOS DE CANAL ETSIN 1991 IÑIGO ECHENIQUE 2010

  15. ENSAYOS DE CANAL ETSIN 1991 IÑIGO ECHENIQUE 2010

  16. PRACTICAL APPLICATIONS 1 747 OD a 17 nudos IÑIGO ECHENIQUE 2010

  17. PRACTICAL APLICATIONS 2 • Aroundtwohundredrudders. • Dynamicstabilisers… Sea Cloud II E 92 V Centenario IÑIGO ECHENIQUE 2010

  18. PROBLEM 1. • BALANCE IN ZERO SPEED CONDITION • BALANCE AT LOW SPEED ___________________________ 2. • LOW STABILITY IN ROUGH SEAS IÑIGO ECHENIQUE 2010

  19. STABILISATION • DAMPING Energydisipation • AJUSTMENT Increment in therollingperiod Addedinertia • EQUILIBRIUM Reduction of theexcitingmoment Oppositeforces IÑIGO ECHENIQUE 2010

  20. Present solutions • BILGE KEEELS • STABILISER TANKS • FLOPPER STOPPERS • DINAMIC STABILISERS • MOVABLE WEIGHTS • GIROSCOPIC STABILISERS • ROTATORY CYLINDERS • SYSTEMS VS PROPULSION BASED IÑIGO ECHENIQUE 2010

  21. + Economic - Limitedefectiveness - Hydrodinamicresistance BILGE KEELS IÑIGO ECHENIQUE 2010

  22. + Efectiveness - Technical complexity - Installationcost Interior volumeloss Limitedapplication - Stabilityloss - Noise STABILISING TANKS IÑIGO ECHENIQUE 2010

  23. + Moderateeffectiveness + Economy Complexinstallation Necesity of polesor cranes - Storage FLOPPER STOPPERS-H.D. IÑIGO ECHENIQUE 2010

  24. + Use at speed + Efectivityforsmall angles - Reducedforces. Concept - Highhydrodinamicresistance - Cost - Noise - Energyconsumption - Limitedapplication HIDRODYNAMIC STABILISERS. Z.S/S.U.A. IÑIGO ECHENIQUE 2010

  25. FISH PECTORAL FINS Functions: • Direction Influence of speed Influenceorarticulation • Longitudinal stability Habitatinfluence Profileinfluence • Lift Oceanicsharks IÑIGO ECHENIQUE 2010

  26. SISPRINCIPLES • Hydrodinamicresistance of a flat plate in a perpendicular flow • Fish pectoral fins • Proportional forces to the external moment • Increment in the ships natural period Added mass IÑIGO ECHENIQUE 2010

  27. SIS + MAXIMUM EFFECTIVITY + SIMPLICITY + MODERATE COST + REDUCED LOSS OFTHE INTERIOR VOLUME + LARGE APPLICATION FIELD + NO EXTRA RESISTANCE AT SPEED + EFFECTIVITY IN ROUGH SEAS + OPTION OF DYNAMIC OPERATION + INCREMENT IN THE ROLLING PERIOD IÑIGO ECHENIQUE 2010

  28. SISensayos Holanda 2004vosper-heesen-marin IÑIGO ECHENIQUE 2010

  29. SISTANK TESTING. Holland 2004 IÑIGO ECHENIQUE 2010

  30. SISTankTesting. Holland 2004 IÑIGO ECHENIQUE 2010

  31. SIS in planningvesselsapplication azimut 65 IÑIGO ECHENIQUE 2010

  32. SIS in planning vessels REAL SCALE TESTS IÑIGO ECHENIQUE 2010

  33. SISAPPLICATION FIELDS • DISPLACEMENT AND SEMIDISPLACEMENT YACHTS • FAST YACHTS • FISSING VESSELS AT LOW SPEED • HOSPITAL SHIPS AND SUPPLYS • PATROL VESSELS • RESCUES AND LIFE SAVING BOATS • PASSENGER SHIPS • FAST FERRIES IÑIGO ECHENIQUE 2010

  34. DESIGN FOR HUMAN AND SEA-I FUTURE SEA AS ENERGY PROVIDER - Wind - Waves - Currents INCREASE IN DEEP WATER OPERATIONS - Minerals - Petrol IÑIGO ECHENIQUE 2010

  35. DESIGN FOR HUMAN AND SEA-II FUTURE 2 INCREASE IN FISHING PRESSURE FISH FARMS AS ALTERNATIVE SEA COLONYS, ARTIFICIAL ISLANDS NEW MARINE VEHICLES AND TRANSPORT IÑIGO ECHENIQUE 2010

  36. SMDC IÑIGO ECHENIQUE 2010

  37. SMDC IÑIGO ECHENIQUE 2010

  38. DESIGN FOR HUMAN AND SEA-II SOME CONSIDERATIONS: • HIGH INCREASE IN SAFETY DEMANDS REGULATION IN DESIGN AND OPERATION • ENVIRONMENTAL IMPACT PREDICTION STUDIES FOR NEW DEVELOPMENTS • GLOBAL LEGISLATION. NEW RULES FOR NEW ENVIRONMENT • BUSSINESS ETHICAL LIMITS APPLICATION. NEW GENERATIONS EDUCATION IÑIGO ECHENIQUE 2010

  39. SMDC IÑIGO ECHENIQUE 2010

  40. FUTURE? IÑIGO ECHENIQUE 2010

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