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Innovations in Lunar Radiation and Dust Shielding Technologies

This document outlines advanced materials and technologies used for radiation and dust shielding in lunar missions. Key features include an aluminum dust shield costing approximately $250 per square meter, with a high-efficiency dust removal rate of 91.5% for lunar dust. The heat resistance and elasticity of aluminum are explored, alongside the performance of electrodynamic dust shields, which show up to a 97.6% dust removal efficiency. The Antenna Motor with 3.95 mN-m of torque and its applications are also discussed, providing insights for future space exploration.

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Innovations in Lunar Radiation and Dust Shielding Technologies

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  1. Kelly Leffel Structures and Thermal [Kelly Leffel] [Structures and Thermal]

  2. Solar Radiation • Aluminum • About $250.00 per square meter with 1 cm thickness • Density 27 kg per square meter with a 1 cm thickness • Electrodynamic Dust Shield • 10 W/m2 for dust load of .64 g/cm2 • 91.5 % dust removal efficiency Lunar Dust Shield [Kelly Leffel] [Structures and Thermal]

  3. Antenna Motor [Kelly Leffel] [Structures and Thermal] • RE 16, 16 mm diameter, Graphite Brushes • 40 gram mass • Ambient temperature of -20 to 65 oC • Max. continuous torque of 3.95 mN-m • Power rating of 4.5 Watts • Cost of $192.95 each Questions ?

  4. Radiation Shield (options) [Kelly Leffel] [Structures and Thermal] • Aluminum • Used in prior missions • Graphite nano-fiber materials with hydrogen added • Currently being considered for future missions • Polyethylene • Good radiation shielding properties, but lower melting temperature than aluminum (100 oC)

  5. Aluminum Properties [Kelly Leffel] [Structures and Thermal] Density = 2700 kg/m3 Elastic Modulus = 7.31E10 Pa Heat Capacity = 963 J/kg oC Thermal Expansion Coefficient = 24.3 microns / m oC Melting Temperature = 580 oC

  6. Dust Shield [Kelly Leffel] [Structures and Thermal] • Experiments ran for continuous and intermittent intervals up to 3 hours • Continuous • Electrodes prevented the dust from collecting • 97.6 % dust removal efficiency • Intermittent • Levitated and then sent to edge by traveling wave • 91.5 % dust removal efficiency

  7. References [Kelly Leffel] [Structures and Thermal] • Aluminum Price • http://www.discountsteel.com/index.cfm/go/main.itemDisplay/itemID/74.htm • Aluminum 6061 Properties • http://edboyden.org/constants.html • Lunar Dust Shield • “Performance Analysis of Electrodynamic Self-Cleaning Transparent Films for its Applications to Mars and Lunar Missions”, Calle, C., IEEE, 2007

  8. [Kelly Leffel] [Structures and Thermal] • Antenna Motor • Maxon Motor https://shop.maxonmotor.com/ishop/article/article/118730.xml • Maxon Motor Catalog Page • https://shop.maxonmotor.com/maxon/assets_external/Katalog_neu/Downloads/Katalog_PDF/maxon_dc_motor/RE-programm/RE-16_118725_08_076_e.pdf

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