Aircraft airfoil formed from thermally adaptive materials and including damping element, stiffening element, and a thermoelectric junction

An airfoil, comprising:

• a body defining a leading edge and a trailing edge,
• wherein the body comprises:
• a base having an outer boundary extending longitudinally from a first end to a second end and transversely from a first side to a second side;
• and
• beads within the outer boundary,
• wherein each of the beads has a bead void, and
• wherein one or more of the beads includes:
• a damping element within the bead void;
• and
• a stiffening element extending across the bead,
• wherein:
• the stiffening element is a reinforcement fiber.

An airfoil, comprising:

• a body defining a leading edge and a trailing edge, wherein the body comprises:
• a base having an outer boundary extending longitudinally from a first end to a second end and transversely from a first side to a second side;
• and
• beads within the outer boundary,
• wherein each of the beads has a bead void, and
• wherein one or more of the beads includes:
• damping element within the bead void;
• or
• a stiffening element extending across the bead, wherein:
• each of the beads defines:
• first and second perimeter segments that are opposite each other and have a first CTE;
• and
• third and fourth perimeter segments that are opposite each other and adjacent to the first and second perimeter segments and have a second CTE that differs from the first CTE, to define a bead CTE gradient.