Monitoring dynamic loads on wind tunnel force balancesTwo devices have been developed at NASA Langley to monitor the dynamic loads incurred during wind-tunnel testing. The Balance Dynamic Display Unit (BDDU), displays and monitors the combined static and dynamic forces and moments in the orthogonal axes. The Balance Critical Point Analyzer scales and sums each normalized signal from the BDDU to obtain combined dynamic and static signals that represent the dynamic loads at predefined high-stress points. The display of each instrument is a multiplex of six analog signals in a way that each channel is displayed sequentially as one-sixth of the horizontal axis on a single oscilloscope trace. Thus this display format permits the operator to quickly and easily monitor the combined static and dynamic level of up to six channels at the same time.
Document ID
19910035044
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ferris, Alice T. (NASA Langley Research Center Hampton, VA, United States)
White, William C. (Wyle Laboratories Hampton, VA, United States)