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Published January 15, 1967 | Published
Journal Article Open

Lunar surface mechanical properties — Surveyor 1


Engineering telemetry data and lunar surface photographs by Surveyor 1 have been evaluated for information on the mechanical properties of the lunar surface material at the Surveyor 1 landing site. Based primarily on photographic evidence, estimates of soil density, cohesion, and other soil characteristics are presented. Also, the mechanisms in which the lunar material is believed to have failed under the footpad impacts are discussed. Because dynamic soil reactions cannot be interpreted directly from the available data, a comparative study using computer-simulated landings was initiated. Preliminary results of this study, which is still in progress, are presented.

Additional Information

Copyright © 1967 by the American Geophysical Union. (Received November 15, 1966.) We extend our appreciation to John Garba, JPL, who contributed significantly to the landing dynamic simulation studies, and to Robert Spencer and Don Schofield for studies and interpretations of television pictures with respect to spacecraft interactions with the lunar surface.

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