Deck sweeping sails and effective aspect ratio

Discussion in 'Hydrodynamics and Aerodynamics' started by Will Fraser, Mar 31, 2015.

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  2. Will Fraser
    Joined: Feb 2014
    Posts: 170
    Likes: 37, Points: 28, Legacy Rep: 11
    Location: South Africa

    Will Fraser Senior Member

    Flaunder: This interesting design by Norwegian Fin Utne was built during WW2.
    Based on a CAD model of the drawings, the sail area was 41sqft .

    The sail-deck gap was completely closed when close hauled.
    He claimed that it could maintain adequate steerage-way as close as 20 degrees to the wind (he does not specify true or apparent).

    More info in AYRS #14 "Wingsails".
     

    Attached Files:

    Will Fraser, Sep 27, 2017
    #151
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