초록 ▼

A cover skin for a variable-shape aerodynamic area, such as a wing structure, tail unit structure, control surface structure or flap structure is described. A cover skin is deformable in one direction without exhibiting substantial deformation in a transverse direction. A deformable framework struct

A cover skin for a variable-shape aerodynamic area, such as a wing structure, tail unit structure, control surface structure or flap structure is described. A cover skin is deformable in one direction without exhibiting substantial deformation in a transverse direction. A deformable framework structure is embedded in a layer of an elastic material, such as rubber or polymer. The framework structure may be comprised of non-deformable elements joined pivotably in auxetic and non-auxetic assemblies of elements that are capable of substantially eliminating transversal contraction, when the cover skin is longitudinal stretched, and substantially eliminating transversal expansion, when the cover skin is longitudinally contracted.

대표청구항 ▼

The invention claimed is: 1. A cover skin for a variable-shape aerodynamic area, the cover skin comprising:a deformable single-piece framework structure embedded in a layer of an elastic material, the framework structure being deformable in a first direction only and comprising:a plurality of region

The invention claimed is: 1. A cover skin for a variable-shape aerodynamic area, the cover skin comprising:a deformable single-piece framework structure embedded in a layer of an elastic material, the framework structure being deformable in a first direction only and comprising:a plurality of regions that form elements;a plurality of regions that form joints, the plurality of regions that form elements being pivotably interconnected by respective ones of the plurality of regions that form joints;auxetic elementary cells being formed by a plurality of the regions that form elements being pivotably interconnected together by the respective ones of the plurality of regions that form joints such that the auxetic elementary cells deform auxetically when compressed and elongated in the first direction of the framework structure; andnon-auxetic elementary cells formed by a plurality of the regions that form elements being pivotally interconnected together by the respective ones of the plurality of regions that form joints such that the non-auxetic elementary cells deform non-auxetically.