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 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 hybrid reflectors for SSA applications further amplifying the system level gains possible through the implementation of a common Visible/RF aperture. The key innovation will be the combination of an aperture that is large enough to be suitable from an RF perspective, precise enough in an inner region to function optically, yet remain light enough to meet system level mass goals. Tuning of RF region shape will accentuate stray light rejection. The Phase I effort focuses on performing the required research to demonstrate feasibility of the RF and optical performance of MOST apertures, compatibility of fabrication process with suitable system level prescriptions, performance in the space environment, and on addressing other key issues critical toward realizing “readiness for flight” and improving TRL level.