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Controlled passive porosity systems to mitigate cavitation

  • US 6,368,059 B1
  • Filed: 07/28/2000
  • Issued: 04/09/2002
  • Est. Priority Date: 07/28/2000
  • Status: Expired due to Fees
First Claim
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1. A lifting device for imparting relative fluid flow in a multi-phase liquid comprising:

  • a leading edge, a trailing edge, a low pressure surface having a first porosity region, and a high pressure surface having a second porosity region, each of the porosity regions comprising a plurality of holes in one of the surfaces;

    a first plenum located within the lifting device and in communication with the plurality of holes in the first porosity region;

    a second plenum located within the lifting device and in communication with the plurality of holes in the second porosity region, the second plenum being fluidly connected to the first plenum; and

    at least one communication passage fluidly connecting the first plenum to the second plenum for allowing fluid flow from the second plenum to the first plenum.

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