A composite wall structure for use in a building, such as a geodesic dome,
or the outer hull of a pressurized vehicle, such as an airship or
submarine, is formed by interconnecting a plurality of three dimensional
triangular shaped cells into a shape of desired contour, such as planar
or curved, with each individual cell having a sealed chamber that is
pressurized, and securing a fluid impervious closure skin to the
connected array of cells. Each cell is formed by connecting planar
rectangular sidewalls into a triangular frame having opposite sides and
attaching a planar triangular panel to each side of the frame in a manner
to form a pressure sealed chamber. The hull structure of predetermined
shape is capable of captivating a volume of air and/or resisting buckling
or failure resulting from fluid pressure on the hull during operation in
air or water environments.