Life Support Baseline Values and Assumptions Document
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NASA/TP-2015–218570/REV1 Life Support Baseline Values and Assumptions Document Molly S. Anderson Michael K. Ewert John F. Keener Responsible National Aeronautics and Space Administration Official: Molly S. Anderson CTSD, Lyndon B. Johnson Space Center National Aeronautics and Space Administration Mail Code EC3 2101 NASA Parkway Houston, Texas 77058 January 2018 THE NASA STI PROGRAM OFFICE . IN PROFILE Since its founding, NASA has been dedicated to the • CONFERENCE PUBLICATION. Collected advancement of aeronautics and space science. The papers from scientific and technical conferences, NASA Scientific and Technical Information (STI) symposia, seminars, or other meetings sponsored Program Office plays a key part in helping NASA or cosponsored by NASA. maintain this important role. • SPECIAL PUBLICATION. 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Anderson CTSD, Lyndon B. Johnson Space Center National Aeronautics and Space Administration Mail Code EC3 2101 NASA Parkway Houston, Texas 77058 January 2018 Available from: NASA Center for AeroSpace Information National Technical Information Service 7115 Standard Drive 5285 Port Royal Road Hanover, MD 21076-1320 Springfield, VA 22161 301-621-0390 703-605-6000 This report is also available in electronic form at http://ston.jsc.nasa.gov/collections/TRS/ Change Log Effective Version Description Authors Date June 1999 JSC 39317 A. Drysdale, A. Hanford May 2002 JSC 47804 A. Hanford August NASA CR-2004-208941 A. Hanford 2004 April 2006 NASA CR-2006-213693 A. Hanford October Rev. A Update Reflecting Constellation B. Duffield 2008 Program Requirements Refinement Update Reflecting Constellation B. Duffield February Rev. B Program & LAT2 High 2010 Mobility Scenario Removed restricted Constellation information to Anderson, Ewert, 2015 NASA TP create a publicly releasable Wagner, Keener version January NASA TP Error corrections, minor Anderson, Ewert, 2018 REV 1 updates Keener ii Life Support Baseline Values and Assumptions Document, NASA/TP-2015-218570, Rev1 January 2018 Contents 1 Introduction ............................................................................................................................................. 1 Purpose and Process ......................................................................................................................... 1 Advantages ....................................................................................................................................... 2 Acknowledgements .......................................................................................................................... 2 2 Approach ................................................................................................................................................. 3 Development .................................................................................................................................... 3 Context ............................................................................................................................................. 3 Life Support Subsystems .................................................................................................................. 3 Definitions ........................................................................................................................................ 7 2.4.1 Modeling ................................................................................................................................... 7 2.4.2 Infrastructure ............................................................................................................................. 7 2.4.3 Equivalent system mass............................................................................................................. 8 2.4.3.1 Equivalent system mass example ....................................................................................... 8 2.4.3.2 Equivalent System Mass Description ................................................................................. 8 2.4.4 Units and Values ....................................................................................................................... 8 Mission Duration .............................................................................................................................. 9 Applicable Documents ................................................................................................................... 18 3 Overall Assumptions ............................................................................................................................. 18 Missions ......................................................................................................................................... 18 3.1.1 Typical Values for Exploration Missions ................................................................................ 19 3.1.2 Asteroid Missions .................................................................................................................... 22 Infrastructure Costs and Equivalencies .......................................................................................... 22 3.2.1 Infrastructure Costs based upon the Exploration Systems Architecture Study ....................... 23 3.2.2 Pressurized Volume or Primary Structure Costs ..................................................................... 24 3.2.3 Radiation Shielding for TransHab ........................................................................................... 27 3.2.4 Secondary Structure Costs ....................................................................................................... 28 3.2.4.1 Lunar Architecture team High Mobility Scenario ............................................................ 29 3.2.5 Power Costs ............................................................................................................................ 32 3.2.6 Thermal Control Costs ............................................................................................................ 38 3.2.7 Crewtime Costs ....................................................................................................................... 40 3.2.8 Location Factors ...................................................................................................................... 40 Crew Characteristics ...................................................................................................................... 42 3.3.1 Crew Metabolic Rate ............................................................................................................... 42 3.3.2 Exploration Metabolic Loads .................................................................................................. 43 3.3.2.1 Short Duration Mission Metabolic Loads ........................................................................ 44 3.3.2.2 Long Duration Mission Metabolic Loads......................................................................... 46 3.3.3 Metabolic Analysis Programs ................................................................................................