Martini 6.0 by Servo Yachts (Concept)

Discussion in 'Stability' started by schakel, Jun 22, 2022.

  1. schakel
    Joined: Jul 2008
    Posts: 377
    Likes: 14, Points: 18, Legacy Rep: 48
    Location: the netherlands

    schakel environmental project Msc


    Two ama's that will stabilize the hovering main hull.
    Not new,
    Experimental Catamaran with active X-Y-Z stabilization from "Velodyne Marine" https://www.boatdesign.net/threads/experimental-catamaran-with-active-x-y-z-stabilization-from-velodyne-marine.46493/#post-619411
    Lubrication will be a challenge.
    So will the power supply for this massive task.
    Servo Yachts https://www.shuttleworthdesign.com/Servo-Yachts.php
    When build smaller it's more obtainable.

    Not to think of the amount of maintenance.

    Enjoy
     
  2. Kayakmarathon
    Joined: Sep 2014
    Posts: 90
    Likes: 33, Points: 18, Legacy Rep: 10
    Location: NewEngland

    Kayakmarathon Junior Member

    As a controls engineer, I find this concept interesting. There are a few major concepts the system's engineer must have contemplated. Is the sampling rate fast enough to track the waves? Are the actuators fast enough to stay in contact with the water at all times? What is the sea condition under which the system loses its ability to track the surface?
     
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  3. schakel
    Joined: Jul 2008
    Posts: 377
    Likes: 14, Points: 18, Legacy Rep: 48
    Location: the netherlands

    schakel environmental project Msc

    Good questions,

    Sampling rate must be 0.1 second. in my opinion.
    The reaction of the actuators the must be in the same range to react in time on a oncoming slamming wave.
    When wave height comes close to 30 % of hull length (150 feet/45 ft) the system is definitly in trouble so that is a safe margin. 45 feet waves seldom occurs, but can be avoided.
    wave heights.jpg
    Source: Beam seas: Pip Hare’s tips on dealing with the most challenging conditions https://www.yachtingworld.com/expert-sailing-techniques/beam-seas-pip-hare-top-tips-124346#:~:text=Pay%20careful%20attention%20at%20the,so%20consider%20alternative%20routes%20early.

    The firm isn't called Servo for nothing.
    Servomechanism - Wikipedia https://en.wikipedia.org/wiki/Servomechanism
    In industry servo's are widely used. It will be costly.

    More about this firm:
    Servo yachts.jpg
     
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