RCS measurements and results of an engine-inlet system design optimization

A number of papers have been published on the prediction of backscatter fro m engine-inlet-type structures. Measured data used to verify these predicti ons mostly consists of backscattered data from canonical structures, e.g., cylindrical waveguide cavities. In this paper, measured backscattered data for a UAV-type engine-inlet system is presented. The effects of the applica tion of radar-absorbing materials to the engine-inlet system on the contrib ution to the RCS is discussed, and data measured in a compact-range facilit y are presented.