Grounding, bonding and shielding for safety and signal interference controlAircraft models and other aerodynamic tests are conducted at the NASA Ames Research Center National Full Scale Aerodynamics Complex (NFAC). The models, tested in NFAC's wind tunnels, are sometimes heavily instrumented and are connected to a data acquisition system. Besides recording data for evaluation, certain critical information must be monitored to be sure the model is within operational limits. The signals for these parameters are for the most part low-level signals that require good instrumentation amplification. These amplifiers need to be grounded and shielded for common mode rejection and noise reduction. The instrumentation also needs to be grounded to prevent electrical shock hazards. The purpose of this paper is to present an understanding of the principles and purpose of grounding, bonding, and shielding.
Document ID
19910067241
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Forsyth, T. J. (NASA Ames Research Center Moffett Field, CA, United States)
Bautista, AL (NASA Ames Research Center Moffett Field, CA, United States)