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Truss core panels

  • US 4,223,053 A
  • Filed: 08/07/1978
  • Issued: 09/16/1980
  • Est. Priority Date: 08/07/1978
  • Status: Expired due to Term
First Claim
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1. A stiffened truss core panel comprising:

  • a first face sheet;

    a primary layer of elongate hollow tubes, each of said elongate hollow tubes having a continuous equilateral triangular cross-sectional shape, said elongate hollow tubes being positioned side-by-side such that two alternating sets of tubes are formed, the bases of one of said alternating sets and the apices of the other of said alternating sets adjoining said first face sheet and being affixed thereto;

    at least one reinforcing rib layer of elongate hollow tubes affixed to a selected region of said primary layer of elongate hollow tubes on the side thereof remote from the side affixed to said first face sheet, each of said elongate hollow tubes having a continuous equilateral triangular cross-sectional shape, said elongate hollow tubes being positioned side-by-side such that two alternating sets of tubes are formed, the bases of one of said alternating sets of tubes and the apices of the other of said alternating sets of tubes of said rib layer adjoining the apices of said one of said alternating sets of tubes and the bases of said other of said alternating sets of tubes of said primary layer, the longitudinal axes of said reinforcing rib layer of elongate hollow tubes lying parallel to the longitudinal axes of said primary layer of elongate hollow tubes; and

    ,a second face sheet affixed to the surface of said primary and reinforcing rib layers of elongate hollow tubes opposed to the surface of said primary layer attached to said first face sheet and opposed to the surface of said reinforcing rib layer attached to said primary layer.

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