Dosiero:Apollo-PSE.jpg
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Beschreibung: A close-up of the PSEP as deployed by the Apollo 11 crew (AS-11-40-5953).
PI/Engineer: Gary V. Latham, Marine Biomedical Institute/Galveston, TX Other Contacts: Maurice Ewing, Frank Press
Apollo Flight Nos.: 11, 12, 14, 15, 16 Apollo Exp't No. S 031
Discipline: lunar seismometry
Weight: 11.5 kg (A-12, 14-16) 47.7 kg (A-11)
Dimensions: 23 cm dia., 29 cm high; thermal skirt extended to 1.5 m dia.
Manufacturer: Teledyne, Bendix
Description/Purpose: The instrument consisted of a seismometer designed to detect moonquakes and impacts. It was considered part of the EASEP on A-11. It contained 3 long-period seismometers with resonant periods of ~15 seconds, aligned orthogonally to measure surface motion in 3 dimensions, and a single-axis, short period seismometer sensitive to vertical motion at higher frequencies (resonant period of ~1 sec.) On later ALSEPs, the single vertical sensor frequency was 0.05 to 10 Hz and the 3 orthogonal sensors were sensitive to 0.004 to 3 Hz. It sat on a mounting stool, which raised the unit off the surface. A Mylar skirt surrounded the unit to reduce thermally induced tilts of the local surface around the apparatus. The A-11 instrument was powered by solar panels, the rest by the ALSEP RTG.
Source: http://www.apolloarchive.com/
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This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).
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