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Breanne Wooten Week 4: February 8 th , 2007

Breanne Wooten Week 4: February 8 th , 2007. Human Factors/Integration/APM Radiation Shielding/TC Crew Compartment. Radiation Shielding. Types of Radiation Sources Galactic Cosmic Rays Major radiation in space outside magnetosphere More or less continuous Solar Particle Events

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Breanne Wooten Week 4: February 8 th , 2007

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  1. Breanne WootenWeek 4: February 8th, 2007 Human Factors/Integration/APM Radiation Shielding/TC Crew Compartment Breanne Wooten 1

  2. Radiation Shielding • Types of Radiation Sources • Galactic Cosmic Rays • Major radiation in space outside magnetosphere • More or less continuous • Solar Particle Events • Large emissions of ions associated with solar flares • Can last several days • Nuclear Reactor • Future Work *Radiation Shielding Mass computer by Kate Mitchell Breanne Wooten 2

  3. Taxi Capsule Crew Compartment Breanne Wooten 3

  4. References [1] Larson W.J, and Linda Pranke. Human Spaceflight: Mission Analysis and Design. The McGraw-Hill Companies, Inc. Crawfordsville. [2] Hanford, Anthony J. Ph.D., Advanced Life Support Baseline Values and Assumptions Document. NASA-Lyndon B. Johnson Space Center. Houston, Texas. 2004. [3] Man-Systems Integration Standards. NASA-STD-3000. Revision B. NASA-Lyndon B. Johnson Space Center. July 1995. Last updated: 6/15/05. <http://msis.jsc.nasa.gov/> [4] Guidance on Radiation Received in Space Activities. NCRP Report No. 98. July 31, 1989. [5] Shielding Strategies for Human Space Exploration. NASA conference publication 3600. NASA-Langley Research Center. December 1997 Breanne Wooten 4

  5. Radiation Shielding Backup Slide 1 • Suggested External Shielding: 5 g/cm2 • Suggested Material: Aluminum (2.78 g/cm3) and Polyethelyne (1.00 g/cm3) 5 ≈ tAl*ρAl+ tPE*ρPE =(1)(2.78)+(2)*(1) = 4.78 g/cm2 Mass of Shielding = 5.78*Surface Area = 4.78 • Repeated for a suggested safe room shielding of 30 g/cm2 using 5 cm Al and 16 cm PE Breanne Wooten 5

  6. HAB Radiation Shielding Backup Slide 2 • No HAB external shielding • Shielding from atm at 0 km = 16 g/cm2(Actual landing site 2 km below “sea level”, no data available for this altitude) • Maximum Annual Dose to Blood Forming Organ (BFO) is substantially less than annual limit Breanne Wooten 6

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