Lightweight Hybrid RF-Optical Systems Enabled by Membrane Optical Surface Technology Apertures

Membrane Optical Shell Technology (MOST) is an innovative combination of 1)ultra-lightweight RF reflective, optically smooth, space qualified membrane thin films, and 2)advanced fabrication techniques that permanently transform otherwise flimsy thin films into compactly roll stowable, single surface load bearing structures through the introduction of RF and optical relevant permanent curvature and coatings. MOST apertures could serve as very lightweight, discrete, hybrid reflectors for SSA applications further amplifying the system level gains possible through the implementation of a common Visible/RF aperture. The key innovation is the combination of an aperture that is large enough to be suitable from an RF perspective and precise enough for an inner region to function optically, yet remain light enough to meet system level mass goals. RF gain has been demonstrated from S to Ka-Band and interferometric optical measurements are beginning to be made. Building on Phase I successes, the Phase II effort focuses on working with industry partners to refine a point design, advancing TRL level of the RF shells, and demonstrating closed loop system optical performance of relevant MOST sub-apertures. This will prepare the way for a space flight demonstration which is a key step in any realistic commercialization plan for space hardware.