Curved high temperature alloy sandwich panel with a truss core and fabrication method

An article, comprising:

• a core;
• and
• two facesheets secured to the core;
• the core comprising:
• a plurality of hollow first truss members extending in a first direction;
• and
• a plurality of hollow second truss members extending in a second direction;
• the truss members of the plurality of first truss members and the plurality of second truss members interpenetrating at a plurality of hollow nodes,
• each of the hollow nodes being immediately adjacent to, and secured to, one of the two facesheets,
• each of the truss members of the plurality of first truss members and the plurality of second truss members having:
• an outside diameter between 0.1 mm and 5 mm,
• a length between 3 mm and 50 mm, and
• a wall thickness between 1 micron and 1000 microns,
• wherein a hollow node is truncated, so that a saddle point of the hollow node is spaced from the facesheet to which it is immediately adjacent by a distance of less than one half of an outside diameter of a hollow truss member extending from the hollow node.