EM Analysis of a Deployable Composite Shell Reflector for Space Applications

This paper presents a simple electro-magnetic analysis of a thin composite shell reflector capable of being rolled and stowed in a tight dual-roll or single-roll configuration and discussion of potential design concerns for consideration. The shell is square in shape and has a doubly-curved surface for use as a segment of a larger deployable reflective aperture. Carbon fiber reinforced polymer is used as the reflective surface for its stiffness and dimensionally stable characteristics. Electro-magnetic properties are estimated from literature and discussion is provided on how to experimentally obtain more accurate values along with current test results and limitations. COMSOL is used for preliminary analysis of the reflector to examine the impact of design errors on performance.