Active thermal control systems for lunar and Martian explorationSeveral ATCS options including heat pumps, radiator shading devices, and single-phase flow loops were considered. The ATCS chosen for both lunar and Martian habitats consists of a heat pump integral with a nontoxic fluid acquisition and transport loop, and vertically oriented modular reflux-boiler radiators. The heat pump operates only during the lunar day. The lunar and Martian transfer vehicles have an internal single-phase water-acquisition loop and an external two-phase ammonia rejection system with rotating inflatable radiators. The lunar and Martian excursion vehicles incorporate internal single-phase water acquisition, which is connected via heat exchangers to external body-mounted single-phase radiators. A water evaporation system is used for the transfer vehicles during periods of high heating.
Document ID
19900062258
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ewert, Michael K. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Petete, Patricia A. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Dzenitis, John (NASA Johnson Space Center Houston, TX, United States)