Active Thermal Control System Radiators for the Dream Chaser Cargo System



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48th International Conference on Environmental Systems


Sierra Nevada Corporation’s Dream Chaser® spacecraft is under contract with NASA to resupply the International Space Station from 2019 through 2024. One of the primary subsystems of this spacecraft is the Active Thermal Control System (ATCS), which maintains all spacecraft components and subsystems within their required temperature limits through heat collection, transportation and rejection processes. A primary means of heat rejection is radiation to space via the active thermal control radiators produced by Paragon Space Development Corporation. This paper provides an overview of the Dream Chaser ATCS and details the design of the radiators. The sizing of the radiator surface area and fluid flow paths will be discussed along with the challenges associated with integrating the radiator panels onto the Dream Chaser Cargo Module. Finally, the manufacturing processes required to produce the radiators will be examined.


Norman Hahn, Paragon Space Development
Cheryl Perich, Sierra Nevada Corporation
ICES305: Environmental and Thermal Control of Commercial and Exploration Spacecraft
The 48th International Conference on Environmental Systems was held in Albuquerque, New Mexico, USA on 08 July 2018 through 12 July 2018.


Thermal Control, Radiators, Dream Chaser