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Design and Modeling of a Variable Heat Rejection RadiatorVariable Heat Rejection Radiator technology needed for future NASA human rated & robotic missions Primary objective is to enable a single loop architecture for human-rated missions (1) Radiators are typically sized for maximum heat load in the warmest continuous environment resulting in a large panel area (2) Large radiator area results in fluid being susceptible to freezing at low load in cold environment and typically results in a two-loop system (3) Dual loop architecture is approximately 18% heavier than single loop architecture (based on Orion thermal control system mass) (4) Single loop architecture requires adaptability to varying environments and heat loads
Document ID
20120004221
Document Type
Presentation
External Source(s)
Authors
Miller, Jennifer R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Birur, Gajanana C. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ganapathi, Gani B. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sunada, Eric T. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Berisford, Daniel F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Stephan, Ryan (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 25, 2013
Publication Date
March 8, 2011
Subject Category
Fluid Mechanics and Thermodynamics
Meeting Information
2011 Spacecraft Thermal Control Workshop(El Segundo, CA)
Distribution Limits
Public
Copyright
Other
Keywords
fluid flow
flow with heat addition