Design Optimization of Slotted Waveguide Antenna Stiffened Structures (SWASS)

T. Ha, and R.A. Canfield
Virginia Polytechnic Institute and State University, Blacksburg, VA, US

Design optimization of slotted waveguide antenna stiffened structures (SWASS) is described. SWASS is a multidisciplinary blending of RF slotted waveguide technology and stiffened composite structures technology. Structural analysis and radio frequency (RF) analysis are integrated. A hat-type stiffened panel is modeled to meet the structure and RF requirements. We are motivated by the potential of design optimization of SWASS to reduce aircraft weight, radar cross section (RCS), and drag, while also bearing loads by integrating the antennas into aircraft structures.

The current process begins with the consideration of multidisciplinary design optimization (MDO) including response surface method (RSM) and COMSOL Multiphysics of software product to couple the responses of the mechanical structure and antenna. The goal of this SWASS concept is to turn the aircraft skin structure into an RF antenna. This design optimization of SWASS can expand the design technology of the commercial or military aircraft industry.