Gold plated, beryllium cylinder on pallet, two three-piece solar panels; 70 x 64 x 56 cm training unit. Constructed principally of beryllium and and had a mass of 11.5 kg, including the electronics module and thermal insulation. It was housed in a drum-shaped enclosure 23 cm in diameter and 29 cm in height. The enclosure was rounded on the bottom and rested on a leveling stool. The PSE consisted of two main subsystems, a sensor unit and an electronics module. The sensor unit contained three matched long-period (LP) seismometers aligned orthogonally in a triaxial set to measure one vertical and two horizontal components of surface motion. The horizontal component seismometers were very sensitive to tilt and were leveled to high accuracy by means of a two-axis motor-driven gimbal operated by ground command. A third motor adjusted the vertical component seismometer in the vertical direction. A fourth, short-period (SP) seismometer with a resonant period of 1 second measured vertical motion at a peak sensitivity of 8 Hz and a response range from 0.05 to 20 Hz. A thermal shroud and 2.5-W heater for thermal control comprised the rest of the experiment package. The thermal shroud was aluminized mylar which covered the instrument and the ground surrounding the base out to about 75 cm radially. A gnomon and level sensor were mounted on the top center of the shroud. Total power drain varied from 4.3 to 7.4 W. Created by Smithsonian National Air and Space Museum Date Created 07/01/2022 Source Smithsonian National Air and Space Museum Keywords Apollo Program; Equipment; Human Spaceflight; Missions; Moon; Space; Tools Rights and Restrictions Not determined
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