NASA NTRS · 19710000125
Portable low-frequency vibration measuring and recording system
Abstract
Information gathering system measures and records vibrations which affect personnel comfort in space, air, and surface vehicles. Three vibration transducers with mutually perpendicular axes control the frequency output of voltage controlled oscillators /VCO/. Outputs of VCO'S are multiplexed and then recorded on one track of stereo tape recorder.
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Clevenson, S. A., Dibble, A. C.. 1971-05-01. Portable low-frequency vibration measuring and recording system. https://ntrs.nasa.gov/citations/19710000125
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