S Sensors Earth, for attitude control, 32 Sun, for attitude control, 32 Sergeant missile, 19 Shielding, 33, 34 Solar cells, 27, 28 Solar flares, 98, 99 Solar panels description, 25 design, 27 output deterioration, 61 release, 11 support, 25 weight, 27 Solar plasma detector, 35, 88, 96, 97 description, 87, 89, 90 function, 87, 89, 90 recordings, 96, 97 Solar plasma flux correlation with geomagnetic effects, 97 Solar wind effects on cosmic-ray movements, 96 magnetic fields, 95, 96 low density and energy, 96 measurement, 89 particle concentration near Earth, 96 particle energies, 96 temperature, 96 theories, 95 velocities, 13, 95, 96, 97, 110 Space Flight Operations Center, 60 organization and operation, 75, 80, 81 Space simulator, temperature control, 41 Spacecraft, 31 attitude control system, 31 Central Computer and Sequencer, 28 components and subsystems, 27 configuration, 23 electronic equipment, 25 frame materials, 23, 25 launching, 12 power system, 25 preliminary design, 41 propulsion system, 32 shroud and adapter, 43 system tests, 41 telecommunications subsystem, 30 temperature, 33 test models, 41 testing, 23 trajectory, 11 weight, 25 Sun sensor, 32 T Telemetry continuous transmission, 65 data processing, 84 description, 30 loss of monitoring data, 62 phase-shift modulation, 30 transmission cutoff, 64 Telemetry processing station, 82, 83 Telemetry system data processing, 30 onboard, description, 30 Temperature control coatings, 34 heating problems, 62 housing structures, 35 materials, 33 problems, 33 solar panels, 35 solar radiation shielding, 35 thermal shielding, 33 Tracking Antigua, 53 Ascension, 53, 55 DSIF, 52, 66, 67, 68, 69 Earth noise, 66 Grand Bahama Island, 53 Johannesburg, 56 Pretoria, 53, 55 problems, 66 radio noise, 66 San Salvador, 53 solar noise, 66 Twin Falls Victory, 53, 55 Whiskey, 55 Woomera, 56 Trajectory, 11, 63, 64, 83