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Pre-integrated structures for Space Station FreedomAn in-space construction (erectable) approach to assembling Freedom is planned but the increasing complexity of the station design along with a decrease in shuttle capability over the past several years has led to an assembly sequence that requires more resources (EVA, lift, volume) than the shuttle can provide given a fixed number of flights. One way to address these issues is to adopt a pre-integrated approach to assembling Freedom. A pre-integrated approach combines station primary structure and distributed systems into discrete sections that are assembled and checked out on the ground. The section is then launched as a single structural entity on the shuttle and attached to the orbiting station is then launched as a single structural entity on the shuttle and attached to the orbiting station with a minimum of EVA. The feasibility of a pre-integrated approach to assembling Freedon is discussed. The structural configuration, packaging, and shuttle integration of discrete pre-integrated elements for Freedom assembly are discussed. It is shown that the pre-integrated approach to assembly reduces EVA and increases shuttle margin with respect to mass, volume, and center of gravity limits when compared to the baseline Freedom assembly sequence.
Document ID
19910011901
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Cruz, Jonathan N. (NASA Langley Research Center Hampton, VA., United States)
Monell, Donald W. (NASA Langley Research Center Hampton, VA., United States)
Mutton, Philip (Lockheed Engineering and Sciences Co. Hampton, VA., United States)
Troutman, Patrick A. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1991
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NASA-TM-102780
NAS 1.15:102780
Accession Number
91N21214
Funding Number(s)
PROJECT: RTOP 476-14-15-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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