Abstract: Two-piece and three-piece radomes and their methods of manufacture involve independently optimizing a thickness profile of each piece to achieve desired radar performance metrics such that an air gap can exist or can be intentionally included between the various pieces without negatively affecting the radar performance of the radomes.

Abstract: A selectively chrome plated object having a substantially flush interface comprises a first portion formed by injection molding a plateable resin and defining a first top surface, a second portion formed by injection molding a non-plateable resin and defining a second top surface, the second portion sitting proud of the first portion such that the second top surface of the second portion is offset from the first top surface of the first portion, and a third portion formed by a chrome plating process where a chrome plating is applied to the first top surface of the first portion such that a third top surface of the third portion is substantially flush with the second top surface of the second portion.

Abstract: Two-piece and three-piece radomes and their methods of manufacture involve independently optimizing a thickness profile of each piece to achieve desired radar performance metrics such that an air gap can exist or can be intentionally included between the various pieces without negatively affecting the radar performance of the radomes.

Abstract: Methods for recovering manganese etchant solutions are provided wherein a process solution used to rinse or neutralize a nonconductive substrate after etching the substrate is collected and evaporated to provide a concentrated process solution that is fed back into the manganese etchant solution or acid rinse.