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Structural fatigue in the 34-meter HA-dec antennasThree 26-m hour-angle/declination (HA-dec) antennas, designed for a life span of 20 years, were built in the early 1960s for the NASA Deep Space Network. After 16 years the antennas were upgraded. The design required a structural weight increase of about 50 percent in both the HA and dec structures to achieve the desired improvements. The fatigue caused by the resulting stress-reversal conditions is discussed. The structural failures and their analyses are described.
Document ID
19920034280
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Van Hek, Ronald A. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Saldua, Benjamin P. (JPL Pasadena, CA, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1991
Publication Information
Publication: IEEE Antennas and Propagation Magazine
Volume: 33
ISSN: 1045-9243
Subject Category
MECHANICAL ENGINEERING
Distribution Limits
Public
Copyright
Other