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Thread: Solid Skirt

  1. #9
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    Default Re: Solid Skirt

    the craft is not for crossing the English channel as well.. we dont have one...



    it will be used in open seas but only coast running never on huge swell.




  2. #10
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    Default Re: Solid Skirt

    But the coast running would tend to have more small waves (wavelets...?) as opposed to large swell.

    If they are small small, then they'd just splash onto the stiff skirt, but a bit bigger and they'll start to ascert a significant force against the skirt's movement.

    What you could do - hinge the skirt into 2 bits, so the bottom 1/3 or w/e can easily fold upwards, so you maintain the structural strength of the upper bit to make it float, and have the very flexy bottom for waves etc, but larger obstacle can make the top bit flex too.

    Right I've copyrighted that idea

    Good luck though !

  3. #11
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    Default Re: Solid Skirt

    Thats a great description of a bag and finger skirt as used on most of the larger craft (eg > 1 ton), and on Rachel Giffords 201 F35

  4. #12
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    Default Re: Solid Skirt

    Yep - I realised just as I posted it

  5. #13
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    Default Re: Solid Skirt

    lol yeah ive gone through all the general skirt types



    http://www.australianhovercraft.com/design_skirts.htm



    and we have been looking into having a similar idea, it would be more like the segmented skirt then the bad and finger skirt.



    As for the waves we wouldnt be going out in anything more then 1/2m swell and as the hull will be 800mm off the deck most of the wave will be able to force the skirt up and slide under whilst the rest will flow around it.



    as for that book.. its on order

  6. #14
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    Default Re: Solid Skirt

    800mm is a lot of hoverheight for a 4m wide craft, then general guide is for a maximum of 1/8 the width ie. about 500mm
    Attached Images Attached Images

  7. #15
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    Default Re: Solid Skirt

    well we are actually shrinking the design down to 2.5m max so it can be towed legally without an escort so the skirt height will change anyway.

  8. #16
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    Default Re: Solid Skirt

    Usual solution to the 2.5m wide towing limit is to fold the sides. Normal length to width ratio is a little under 2:1 so a 10m long craft would be 5-6m wide.

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