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Evolutionary growth for Space Station Freedom electrical power systemOver an operational lifetime of at least 30 yr, Space Station Freedom will encounter increased Space Station user requirements and advancing technologies. The Space Station electrical power system is designed with the flexibility to accommodate these emerging technologies and expert systems and is being designed with the necessary software hooks and hardware scars to accommodate increased growth demand. The electrical power system is planned to grow from the initial 75 kW up to 300 kW. The Phase 1 station will utilize photovoltaic arrays to produce the electrical power; however, for growth to 300 kW, solar dynamic power modules will be utilized. Pairs of 25 kW solar dynamic power modules will be added to the station to reach the power growth level. The addition of solar dynamic power in the growth phase places constraints in the initial Space Station systems such as guidance, navigation, and control, external thermal, truss structural stiffness, computational capabilities and storage, which must be planned-in, in order to facilitate the addition of the solar dynamic modules.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Marshall, Matthew Fisk
(Rockwell International Corp. Rocketdyne Div., Canoga Park, CA, United States)
Mclallin, Kerry
(Rockwell International Corp. Canoga Park, CA, United States)
Zernic, Mike
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: IECEC-89
Location: Washington, DC
Country: United States
Start Date: August 6, 1989
End Date: August 11, 1989
Accession Number
Distribution Limits

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