Hydroptere-61 knots(70.15mph) Peak

Discussion in 'Multihulls' started by Doug Lord, Apr 1, 2011.

  1. mcm
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    mcm Senior Member

    And in the case of Hydroptere, the dihedral of the foils looks to be about 50deg relative to the water line.
    Does anyone know for sure ?
     
  2. Doug Halsey
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    Doug Halsey Senior Member

    The number I recall is 45deg, but I don't know if that's an official value, or just something I measured on a sketch years ago. In any case, that's the right ballpark.

    The actual angle at which the foil enters the water also depends on the heel angle, so it would be somewhat smaller for the leeward foil. Also, Hydroptere has unique shock- absorbers on the foils that cause small perturbations to these angles at times.
     
  3. Doug Lord
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    Doug Lord Flight Ready

  4. Corley
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    Corley epoxy coated

    I'm glad they had a go maybe next time they will get the record. It's a pretty challenging task for Hydroptere the boat is undoubtedly fast but only in a relatively narrow band of conditions and points of sail.
     
  5. Corley
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    Corley epoxy coated

  6. Doug Lord
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  7. Doug Lord
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    Doug Lord Flight Ready


  8. rcnesneg
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    rcnesneg Senior Member

    If you read through the thread on SA there is a lot of confusion, but the general consensus seems to be the people over there have decided it got sold and will not be scrapped, possibly back to Alain Thebault.
     
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