DTIC ADA182789: Charging of a Man in pdf

DTIC ADA182789: Charging of a Man in

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Charging of the DMSP F6 and F7 satellites is shown to result from the combined effects of high flux of high energy auroral electrons and low ambient background ion density. POLAR computer code calculations are presented which show that a shuttle size object will charge more than 3000 volts negative under these charging conditions. The highly charged shuttle accelerates ions to the shuttle potential producing a high energy mono-energetic plasma environment near the shuttle. During these charging events, an astronaut performing EVA will charge with its ion collection orbit limited. Material secondary properties will produce differential charging on the astronaut of the same magnitude as the shuttle charging potential. NASCAP computer code calculations of EMU charging in the near shuttle environment show differential voltage of 2600 volts and overall charging 1000 volts more negative than the shuttle will occur

• Creator/s: Defense Technical Information Center
• Date: 7/1/1986
• Year: 1986
• Book Topics/Themes: DTIC Archive, Jongeward, G A, S-CUBED LA JOLLA CA, *ELECTRIC CHARGE, *ASTRONAUTS, *EXTRAVEHICULAR ACTIVITY, COMPUTER PROGRAMS, IONS, ORBITS, COMPUTATIONS, SIZES(DIMENSIONS), SPACE ENVIRONMENTS, FLUX(RATE), ELECTRON SCATTERING, VOLTAGE, BACKSCATTERING, REGIONS, HIGH ENERGY, ELECTRONS, SPACE SHUTTLES, WAKE, COMPUTER APPLICATIONS, SECONDARY EMISSION, AURORAE, POLAR ORBIT TRAJECTORIES, COLLECTION, ION DENSITY, PLASMA SHEATHS

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