Abstract: A composite passive ar-mor protection comprises a structure embedded in the light ahoy matrix (1), wherein said structure is made of ele-ments in the form of geometric solids (2), resting on a flame in the form of a grid made of the permanently connected layers of tubes (3), wherein preferably through the tubes (3) are passing fibers (4), and the geometric solids (2) are em-bedded in the light metal alloy matrix (1) to a level above one half of their total height.

Abstract: A composite passive armor protection comprises a structure, embedded in the light alloy matrix (1), wherein said structure is made of geometric solids (2), resting on brackets (3), passing through the holes in plate (4), wherein said brackets (3) have precuts in the walls located at a height above and below the plate (4), wherein in said precuts in the walls are secured rods (5) in such a way that they form a grid, wherein the geometric solids (2) are embedded in the light alloy matrix (1), preferably to a level above one half of their total height, and wherein the rods (5) are preferably fixed in such a way that their longitudinal axes coincide with the axes of the geometric solids (2).

Abstract: A composite passive armor protection comprises a structure, embedded in the light ahoy matrix (1), wherein said structure is made of geometric solids (2), resting on brackets (3), passing through the holes in plate (4), wherein said brackets (3) have through-holes located at a height above and below the plate (4), wherein in said through-holes are secured rods (5) in such a way that they form a grid, wherein the geometric solids (2) are embedded in the light ahoy matrix (1), preferably to a level above one half of their diameter, and wherein the rods (5) are preferably fixed in such a way that their longitudinal axes coincide with the axes of the geometric solids (2).

Abstract: A composite passive armor protection having geometric solids embedded in a matrix, characterized in that it consists of the parallel non-adjacent plates (1,2), wherein the upper plate (2) has grooves (3), in which are resting the geometric solids (4) embedded in a light alloy matrix (5), preferably to a level above one half of their total height, while the space between the parallel plates is a layer of light alloy (6)

Abstract: A class of lightweight structural members, characterized by lighter weight and greater resistance to buckling under axial compressive loading, as compared to conventional structural members, is described. The lightweight structural members typically comprise a thin tubular member filled with a metallic foam material. The foam material preferably comprises particulate matter comprised of agglomerated fly ash material, and, preferably, gaseous material in pores within the foam material. In an alternate configuration, the lightweight structural member comprises two tubular members, one nested inside the other, wherein the annular volume between the tubular members is filled with metallic foam material. A method for manufacturing the structural members is also described.

Abstract: A class of lightweight structural members, characterized by lighter weight and greater resistance to buckling under axial compressive loading, as compared to conventional structural members, is described. The lightweight structural members typically comprise a thin tubular member filled with a metallic foam material. The foam material preferably comprises particulate matter comprised of agglomerated fly ash material, and, preferably, gaseous material in pores within the foam material. In an alternate configuration, the lightweight structural member comprises two tubular members, one nested inside the other, wherein the annular volume between the tubular members is filled with metallic foam material. A method for manufacturing the structural members is also described.