Abstract: A penetrator includes a fore body comprising a pin and having a center of aerodynamic pressure forward of a center of gravity and a stabilizing portion comprising a material of lower density than that of the fore body and a plurality of outwardly extending fins for improving an aerodynamic stability of the projectile and defining a bore in which the pin is received for removably attaching the fore body thereto such that, when attached to the fore body, a center of gravity for the penetrator is forward of a center of aerodynamic pressure for the penetrator.

Abstract: A penetrator includes a fore body comprising a pin and having a center of aerodynamic pressure forward of a center of gravity and a stabilizing portion comprising a material of lower density than that of the fore body and a plurality of outwardly extending fins for improving an aerodynamic stability of the projectile and defining a bore in which the pin is received for removably attaching the fore body thereto such that, when attached to the fore body, a center of gravity for the penetrator is forward of a center of aerodynamic pressure for the penetrator.

Abstract: A penetrator includes a fore body having a center of aerodynamic pressure forward of a center of gravity and a stabilizing portion removably attached to the fore body such that, when attached to the fore body, a center of gravity for the penetrator is forward of a center of aerodynamic pressure for the penetrator. A method of using a penetrator includes propelling the penetrator toward a first target, penetrating the first target with a fore body of the penetrator, and detaching a stabilizing portion of the penetrator from the fore body. The method further includes impacting the second target with the fore body.

Abstract: A low-density electrically-conductive thermal insulator is a coupling of a polymer-based thermally-insulating material with an open-celled electrically-conductive base material defining a plurality of interconnected cells throughout. The open-celled, electrically-conductive base material is preferably an open-celled metallic foam material formed by an interconnected plurality of electrically-conductive ligaments. The electrically-conductive base material may be first formed into a desired shape or structure, coated such that cells in the electrically-conductive base structure are substantially filled with the insulating material, and then cured to solidify the insulating material. The electrically-conductive thermal insulator provides thermal protection while providing electrical conductivity.

Abstract: An electrically-conductive, thermally-insulating structure includes a thermally-insulating layer having a thermal conductivity of no more than about 3.5×10−3 W/hr·cm·°K and an electrically-conductive layer, applied to the thermally-insulating layer, which has an electrical resistivity of no more than about five ohms at 700° C. The thermally-insulating layer can include a plurality of microballoons to decrease the density of the thermally-insulating layer.

Abstract: An electrically-conductive, thermally-insulating structure includes a thermally-insulating layer having a thermal conductivity of no more than about 3.5×10−3 W/hr·cm·° K and an electrically-conductive layer, applied to the thermally-insulating layer, which has an electrical resistivity of no more than about five ohms at 700° C. The thermally-insulating layer can comprise a plurality of microballoons to decrease the density of the thermally-insulating layer.

Abstract: An electrically-conductive, thermally-insulating structure includes a thermally-insulating layer having a thermal conductivity of no more than about 3.5×10−3 W/hr·cm·°K. and an electrically-conductive layer, applied to the thermally-insulating layer, which has an electrical resistivity of no more than about five ohms at 700° C. The thermally-insulating layer can comprise a plurality of microballoons to decrease the density of the thermally-insulating layer.