Feasibility study of a low-temperature expandable megawatt pulse power radiator

Future space missions require development of lightweight, large-surface-area radiators. These conceptual systems are envisioned as generating waste heat in the form of pulses with peak-to-average power ratios of 10 super(4)-10 super(5). The present Note focuses on the definition of a "collectible" expendable concept. During the pulse, heat is removed directly from a high-power density component through flash or spray evaporation. The vapor generated is collected in an expandable, variable-volume, variable-surface-area radiator. The vapor is condensed within the radiator during an interpulse period and recirculated to the coolant reservoir to be recycled.