What do you think about this hydrofoil?

Discussion in 'Hydrodynamics and Aerodynamics' started by MantaRay, Mar 9, 2013.

  1. MantaRay
    Joined: Mar 2013
    Posts: 19
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: United Kingdom

    MantaRay Junior Member

    I just want to rectify this thread with some additional information.

    The original hydrofoil in question was designed during the 80s and performed well.. by the looks of it.



    It seems a bit unstable, especially in pitch.

    More info here and here.
     
  2. SURFFOILS
    Joined: Dec 2011
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Sydney

    SURFFOILS Junior Member

    Looks more like its planing on the rear tip of that front section than hydrofoiling, it also looks unstable in roll, I'd like to see it in rough chop.
    Move the "foil" forward to reduce the hulls extreme AOA also will lower the planing speed.
     
  3. daiquiri
    Joined: May 2004
    Posts: 5,372
    Likes: 239, Points: 73, Legacy Rep: 3380
    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    I have to agree, it looks awful in water.
     
  4. 1J1
    Joined: Sep 2012
    Posts: 108
    Likes: 13, Points: 18, Legacy Rep: 10
    Location: .

    1J1 Senior Member

    I see it's using the airfoil just to make sure the bow is pointed up so it would be gliding on that ski just fine. Barely any stable than normal hydrofoil or WIG craft.
     
  5. Soggyhull
    Joined: Mar 2015
    Posts: 6
    Likes: 0, Points: 0, Legacy Rep: 9
    Location: San Jose, CA

    Soggyhull Junior Member

    Exactly. That thing looks more made for space than the water.
     
  6. ariel zerpa
    Joined: Sep 2012
    Posts: 15
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: uruguay

    ariel zerpa Junior Member

    I think the foil is designed to work at full ventilated mode at high aoa like these proyect on the seventies that use skies on jets to take off and landing. Plus the ground efect .
     
  7. Petros
    Joined: Oct 2007
    Posts: 2,936
    Likes: 139, Points: 63, Legacy Rep: 1593
    Location: Arlington, WA-USA

    Petros Senior Member

    these all are cartoons. not something developed from sound scientific and engineering principles. I have seen the authors of Sci-fic fiction come up with more realistic designs.
     
  8. 1J1
    Joined: Sep 2012
    Posts: 108
    Likes: 13, Points: 18, Legacy Rep: 10
    Location: .

    1J1 Senior Member


  9. Stumble
    Joined: Oct 2008
    Posts: 1,896
    Likes: 71, Points: 48, Legacy Rep: 739
    Location: New Orleans

    Stumble Senior Member

    I am a little curious how modern lifting foils, ala J foils would work on this. Angled outward instead of inward I think they would provide both lift and roll stability.
     
Loading...
Similar Threads
  1. container
    Replies:
    7
    Views:
    1,106
  2. vejas
    Replies:
    34
    Views:
    3,055
  3. revintage
    Replies:
    8
    Views:
    999
  4. revintage
    Replies:
    14
    Views:
    3,896
  5. rallyhybrid
    Replies:
    39
    Views:
    2,586
  6. optiwings
    Replies:
    1
    Views:
    884
  7. Tommifin
    Replies:
    5
    Views:
    1,090
  8. Ittiandro
    Replies:
    2
    Views:
    2,515
  9. bjn
    Replies:
    23
    Views:
    3,388
  10. Tommifin
    Replies:
    3
    Views:
    1,776
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.