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Thread: strange fan blades

  1. #9
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    Default Re: strange fan blades

    Quote Originally Posted by noursbabe
    Vortex has expanded into the US market and has taken on Kawa Hovercraft to act as its agents for...(quote from google)

    perhaps vortex have shares in these strange blades whats the name of the guy at vortex to talk to ?


    I could not find a Vortex website, can you help?



    Also looking for the press release or other source you referenced.






  2. #10
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    Default Re: strange fan blades

    you can find vortex at http://www.vortex.org.uk/

  3. #11
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    Default Re: strange fan blades

    Hi there all,



    Vortex here...



    They are Hascon blades and no they have not been released yet except for some sample blades to tempt the market. Max diameter is only 760mm at present with no plans to go bigger. Main advantage is supposed!! to be that they are quieter. We will have some in for test as soon as they are available.



    Will keep you posted



    Keith

  4. #12
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    Default Re: strange fan blades

    It will be interesting to see if they are any quieter than normal blades in a hovercraft application. My understanding is that the unusual shape is there to reduce conventional fan noise (specifically trailing edge noise?). But the NoiseCam work appears to show that virtually all craft have turbulence noise maybe 6-10db over and above any conventional fan noise due to our habit of putting things too close to the fan. I don't think the unusual shape will solve that turbulence noise. So the challenge will be to eliminate turbulence noise first then maybe use unusual shaped fans to still further reduce the overall fan noise.

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