2results about How to "Reduce RCS" patented technology

The application discloses a high-cut transmissive and reflective integrated reconfigurable skin, which comprises a plurality of same and periodically arranged reconfigurable metasurface units, each of which comprises, from top to bottom, a glass steel, a first reconfigurable layer, a first foam layer, a second metal mesh layer, a second foam layer and a third metal layer; the first reconfigurable layer is composed of a multilayer structure, comprising a first annular metal patch, a first dielectric substrate, a second staggered cross-shaped aperture type metal patch, a second dielectric substrate and a third oblique rectangular metal bias line which are stacked in sequence, and two metallized holes, four PIN diodes and two inductors; when the application is in a wave-transmissive state, electromagnetic waves can pass through the skin with low insertion loss when being incident, without affecting the receiving / transmitting performance of a radio frequency front-end antenna; when the application is in a shielding state, the skin can protect the antenna from being affected when high-power attack electromagnetic waves are incident.

The utility model discloses a low scattering and pneumatic integrated telescopic hexagonal groove countersunk head screw, it includes screw cap, countersunk head round platform thread and stem. Screw cap includes six prismatic marbles spring and six prismatic inner groove, when not considering the tolerance gap between six prismatic marbles and six prismatic inner groove, the stem is the cylinder that is connected with the bottom surface of screw cap, and the thread is the ordinary thread that is equidistantly surrounded in the stem, that is, the triangular tooth shape. The low scattering pneumatic telescopic hexagonal groove countersunk head screw provided by the utility model provides the design principle of low scattering pneumatic screw radar stealth and pneumatic shape, which is a design method for the comprehensive mechanical properties of the low detectability of the screw pneumatic, and the design idea is unique and ingenious, the pneumatic low detectability effect is remarkable, the mechanical properties are good, and the design part has high universality. It can be operated and used by using the general hexagonal screwdriver, and it is convenient to couple all the screws with the whole in the gap direction.