Everything Old is new again - Flettner Rotor Ship is launched

Discussion in 'Boat Design' started by rwatson, Sep 1, 2008.

  1. apex1

    apex1 Guest

    You really should read the thread Thuddy!
     
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  2. apex1

    apex1 Guest

    Jesus a donkey is far less stubborn.............

    Whats this?

    [​IMG]

    right, the NA´s plan for Calypso II

    What´s this?

    [​IMG]

    bravo, you got it! The same vessel as a model.

    Both show a Flettner Rotor.

    Yes, Cousteau was as stubborn as you, but he was aware of the advantages of saving fuel.:D

    Regards
    Richard
     
  3. Clarkey
    Joined: Aug 2010
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    Clarkey Junior Member

    The photo clearly shows a turbosail. The drawing shows a vaguely cylindrical object which could be either a rotor or a turbosail. The Cousteau society was heavily involved with the development of the turbosail, Moulin a Vent had a turbosail, Alcyone had two turbosails, the Cousteau society say that Calypso 2 would have had a turbosail and their video presentation shows a turbosail. I think it may possibly have been their intention to use a turbosail.
     
  4. thudpucker
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    thudpucker Senior Member

    I did read it which is what prompted the question. I asked for an explanation, not a crapload of sarcasam.:(
     
  5. apex1

    apex1 Guest

    No mate you have not!

    It was mentioned several times (even with figures) that it needs just minimal power to rotate the thingies, Buckau had 10hp El. motors per Rotor. The proa is equipped with a small solar panel for that purpose.

    There is nothing inside the "stack" and the Diesel does not drive anything but a prop.
    And the air across the "foil" is driven by the wind.

    You clearly have not understood the principle.

    The crapload of sarcasm I have not seen here to be honest, but a lot of contradictive comments for no good reason except contradiction.

    Regards
    Richard
     
  6. apex1

    apex1 Guest

    The society said.......

    yes, and that was mentioned already! After Cousteau´s death the plan was abandoned. Cousteau wanted the vessel with a Flettner Rotor and that, and only that, is very obvious in the NA´s drawing.

    Maybe not only beauty is in the eye of the beerholder?
     
  7. Clarkey
    Joined: Aug 2010
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    Clarkey Junior Member

    And you said that I was stubborn like a donkey! What is the sail in the photo? What is the sail in the video? What is the sail referenced in the text? Your evidence is basically a rather poor artists impression which is inconclusive at best.

    Could it possibly be the case that you are, perhaps, wrong?
     
  8. apex1

    apex1 Guest

    The "poor Artists Impression" is a sketch done by the NA! How often must one say that???
    There is no sail in the photo, but a rotor. The video I cannot access, if that shows a sail, well, so be it.

    The fact that the old grumpy wanted a Flettner Rotor on Calypso II remains untouched, and only that was my point.

    On top of all that, it is completely insane that we discuss what never was realized in either way, isn´t it?
     
  9. Clarkey
    Joined: Aug 2010
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    Clarkey Junior Member

    Please look at the photo carefully - it is not a rotor. The rear flap and suction grill are both clearly visible. The sketch could show either a rotor or a turbosail depending on orientation. I do not imagine that the NA dashed out the sketch but then left the making of the detailed model to some monkey that completely changed the rig without telling him :rolleyes:

    Here are some more turbosail-equipped Calypso 2 images:
    [​IMG]
    [​IMG]
    [​IMG]

    Ooh look - that last image is of the same model as before, the one that has a turbosail.

    You are right about one thing - it is not worth arguing further about a mythical ship.:)
     
  10. apex1

    apex1 Guest

    I stand corrected! These are clearly Turbosails!

    How far, why and if, the NA was involved in these changes (if there was a change) is mute to discuss.

    As the whole issue. Nice we could agree on that.

    Richard
     
  11. ancient kayaker
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    ancient kayaker aka Terry Haines

  12. Clarkey
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    Clarkey Junior Member

    No problem. Out of interest, do you think there is any future for rotor sails on passagemaking trawler yachts? It is the only leisure industry application I can really see the advantages of the rotor making sense for.
     
  13. apex1

    apex1 Guest

    No,

    the appearance sells. The Rotor will not attract prospective buyers. A further developed (price wise) Skysails system is another animal, there I see a future.

    I can imagine a renaissance of the Flettner Rotor on tankers and bulkers around "handysize" class, where every single penny counts, but speed is not the main target.

    Richard
     
  14. Clarkey
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    Clarkey Junior Member

    Well if the lean steam trawler look comes in to fashion we stand a chance!
    [​IMG]
    The funnel is almost rotor-sized already!

    Or maybe a steam tug?
    [​IMG]
     

  15. apex1

    apex1 Guest

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