Viking 1975 Orbiter Development Test Model/Lander Dynamic Test Model dynamic environmental testing - An overviewThe current work presents an overview of the Viking 1975 environmental testing from an engineering standpoint. An extremely large vibration test fixture had to be designed, analyzed, and integrated into a test setup that employed hydrostatic bearings in a new fashion. A vibration control system was also required that would allow for thirty-six channels of sine-wave peak select control from acceleration, force-of-strain transducers. In addition, some 68 channels of peak limiting shutdown capability were needed for backup and monitoring of other data during the forced vibration test. Pretesting included analyses of the fixture design, overturning moment, control system capabilities, and response of the entire spacecraft/fixture/exciter system to the test environment. Closed-loop control for acoustic testing was a necessity due to the fact that the Viking spacecraft took up a major portion of the volume of the 10,000 cu ft chamber. The spacecraft emerged from testing undamaged.
Document ID
19750050871
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Milder, G. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Ground Support Systems And Facilities (Space)
Meeting Information
Meeting: Institute of Environmental Sciences, Annual Technical Meeting