NASA/TP-2010- 216136 Desert Research and Technology Studies (DRATS) 2008: Evaluation of Small Pressurized Rover and Unpressurized Rover Prototype Vehicles in a Lunar Analog Environment Andrew F. J. Abercromby, Ph.D. Wyle Integrated Science and Engineering Group Johnson Space Center, Houston, Texas Michael L. Gernhardt, Ph.D. Johnson Space Center, Houston, Texas Harry Litaker Lockheed Martin Johnson Space Center, Houston, Texas November 2010 The NASA STI Program Office ... in Profile Since its founding, NASA has been dedicated to • CONFERENCE PUBLICATION. the advancement of aeronautics and space Collected papers from scientific and science. The NASA Scientific and Technical technical conferences, symposia, Information (STI) Program Office plays a key seminars, or other meetings sponsored or part in helping NASA maintain this important co-sponsored by NASA. role. • SPECIAL PUBLICATION. 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[email protected] • TECHNICAL MEMORANDUM. • Fax your question to the NASA STI Help Scientific and technical findings that are Desk at (301) 621-0134 preliminary or of specialized interest, e.g., quick release reports, working papers, and • Telephone the NASA STI Help Desk at bibliographies that contain minimal (301) 621-0390 annotation. Does not contain extensive analysis. • Write to: NASA STI Help Desk • CONTRACTOR REPORT. Scientific and NASA Center for AeroSpace Information technical findings by NASA-sponsored 7121 Standard Drive contractors and grantees. Hanover, MD 21076-1320 NASA/TP-2010- 216136 Desert Research and Technology Studies (DRATS) 2008: Evaluation of Small Pressurized Rover and Unpressurized Rover Prototype Vehicles in a Lunar Analog Environment Andrew F. J. Abercromby, Ph.D. Wyle Integrated Science and Engineering Group Johnson Space Center, Houston, Texas Michael L. Gernhardt, Ph.D. Johnson Space Center, Houston, Texas Harry Litaker Lockheed Martin Johnson Space Center, Houston, Texas November 2010 Available from: NASA Center for AeroSpace Information National Technical Information Service 7121 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://techreports.larc.nasa.gov/cgi-bin/NTRS CONTENTS 1.0 INTRODUCTION ................................................................................................... 1 1.1 Background and Significance ................................................................................. 2 1.2 Hypotheses and Test Objectives ............................................................................. 7 2.0 METHODS ............................................................................................................... 8 2.1 Protocol Design ....................................................................................................... 8 2.1.1 One-Day UPR and SPR Traverses ....................................................................... 8 2.1.2 Three-Day SPR Traverse ..................................................................................... 8 2.1.3 Test of Contextual Geological Observations ...................................................... 8 2.1.4 Nighttime Traverses ............................................................................................. 9 2.1.5 Procedures, Mission Rules, and EVA Tools ........................................................ 10 2.1.6 Traverse Planning and “Day-in-the-Life” Timeline Development ...................... 10 2.1.7 Crews and Crew Training .................................................................................... 19 2.2 Test Hardware ........................................................................................................... 19 2.2.1 Unpressurized Rover / Mobility Chassis (aka “Chariot”) .................................... 19 2.2.2 Small Pressurized Rover (SPR) ........................................................................... 21 2.2.2.1 Suit Port Mockup .............................................................................................. 25 2.2.2.2 Mockup MkIII Spacesuits and EVA Tools ....................................................... 28 2.2.2.3 Communications, Networking and Navigation Infrastructure ........................... 31 2.2.2.4 Mobile Mission Control Center ....................................................................... 32 2.2.2.5 SPR Exercise Ergometer ................................................................................... 33 2.2.3 Hardware Inspection ............................................................................................ 34 2.3 Metrics and Hypotheses Testing ............................................................................ 34 2.3.1 Hypothesis 1: Comparing Productivity and EVA Suit Time ................................ 35 2.3.2 Hypothesis 2: Comparing Range ........................................................................... 37 i 2.3.3 Hypothesis 3: Contextual Observations ............................................................... 38 2.3.4 Hypothesis 4: Suit Port Human Factors ............................................................... 39 2.3.5 Hypothesis 5: Human Factors during 3-Day Traverse ......................................... 39 2.3.6 Other Test Objectives .......................................................................................... 43 2.3.7 Subjective Crew Health Metrics .......................................................................... 44 3.0 RESULTS AND DISCUSSION ............................................................................ 46 3.1 Hypothesis 1: Comparing Productivity and EVA Suit Time .................................. 46 3.2 Hypothesis 2: Comparing Range ............................................................................ 47 3.3 Hypothesis 3: Contextual Observations .................................................................. 48 3.4 Hypothesis 4: Suit Port Human Factors .................................................................. 49 3.5 Hypothesis 5: Human Factors during 3-day Traverse ............................................ 50 3.5.1 Driving-Related Human Factors .......................................................................... 51 3.5.2 Displays and Controls Human Factors ................................................................ 53 3.5.3 Visibility Human Factors ..................................................................................... 55 3.5.4 Suit Port Human Factors ...................................................................................... 58 3.5.5 Habitability of Crew Accommodations ............................................................... 58 3.5.6 SPR Exercise Device Human Factors ................................................................. 63 3.6 Other Test Objectives ............................................................................................. 66 3.6.1 Nighttime Driving and Exploration, Mapping, and Geological Sample Collection and Documentation Tasks .............................................. 66 3.6.2 Measure Performance Metrics During 1-day and 3-day (SPR only) Exploration, Mapping, and Geological Traverses........................ 66 4.0 CONCLUSIONS ..................................................................................................... 71 5.0 REFERENCES ....................................................................................................... 72 6.0 ACKNOWLEDGEMENTS .................................................................................... 72 7.0 APPENDICES ........................................................................................................ 73 ii TABLES Table 1 – UPR Timeline Assumptions. ....................................................................................... 12 Table 2 - SPR Timeline Assumptions.