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Hollow core airfoil

  • US 5,253,824 A
  • Filed: 09/01/1992
  • Issued: 10/19/1993
  • Est. Priority Date: 04/16/1991
  • Status: Expired due to Term
First Claim
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1. A hollow core airfoil comprising:

  • first and second halves diffusion bonded together;

    a substantially hollow central portion between said first and second halves;

    a root portion, a tip portion, a leading edge and a trailing edge;

    a plurality of radial ribs extending from said root portion to said tip portion within said hollow portion wherein said radial ribs comprise ridges of said first and second half diffusion bonded to form continuous ribs; and

    a plurality of chord-wise stringers within said hollow portion wherein said stringers are arranged such that said stringers on said first half are not bonded to said stringers on said second half and a portion of said chord-wise stringers extend from said leading edge to said trailing edge wherein said chord-wise stringers are arranged in a foot print pattern starting at said leading edge and having a length proportional to a predetermined load concentration at said leading edge.

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