Abstract: A radar attenuating composition is described for which incident microwave diation is absorbed and/or scattered, causing a significant decrease in retroreflectance of the object to which the composition is applied, that is, a reduction in the radar cross-section of the object. The radar attenuating composition or paint is prepared by uniformly mixing thin conducting fibers such as stainless steel fibers or carbon or graphite into a standard camouflage-type paint. The fibers act as electric dipole segments. The purpose of the countermeasure paint of the present invention is to reduce the amount of microwave radiation reflected back by a target to the receiver, i.e. reducing the amount of retroreflection.

Abstract: Countermeasures apparatus is disclosed for attenuating radiation by absoron, reflection, and/or scattering, whether the radiation is reflected by or emanates from a target to be protected. The countermeasures apparatus comprises an artificial tree having a plurality of leaves disposed between the target to be protected and radiation sensors whereby the radiation directed from the target to the sensors is attentuated, the radiation being of a plurality of different wavelengths. Attenuating means are disposed on the leaves and take the form of an array of electrically conductive particles forming dipoles whose lengths are chosen to be 0.48 or approximately one-half of the wavelengths of the wavelength of the radiation to be defeated. The dipoles of the array are spaced from each other a spacing within an optimum range of one-half to one of the wavelength of the radiation of interest to effect coherent absorption and scattering of this radiation.

Abstract: Solar cells are interconnected by filaments stretched crosswise between the edges of a rectangular frame to form a gridwork, and thereby produce a lightweight inexpensive support that is not susceptible to damage from winds, snow, and ice. Additionally, the top of the cells have thin resistive wires mounted thereto for preventing snow and ice accumulation.

Abstract: The invention relates to hypervelocity projectiles of such mass, configuron, density and material that upon impact with targeted armor backface spallation occurs in which a large quantity of fragments are ejected from the backface although there has been no penetration of the projectile through the armor.