Instrumentation complex for Langley Research Center's National Transonic FacilityThe instrumentation discussed in the present paper was developed to ensure reliable operation for a 2.5-meter cryogenic high-Reynolds-number fan-driven transonic wind tunnel. It will incorporate four CPU's and associated analog and digital input/output equipment, necessary for acquiring research data, controlling the tunnel parameters, and monitoring the process conditions. Connected in a multipoint distributed network, the CPU's will support data base management and processing; research measurement data acquisition and display; process monitoring; and communication control. The design will allow essential processes to continue, in the case of major hardware failures, by switching input/output equipment to alternate CPU's and by eliminating nonessential functions. It will also permit software modularization by CPU activity and thereby reduce complexity and development time.
Document ID
19780033463
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Russell, C. H. (NASA Langley Research Center Digital Data Acquisition Section, Hampton, Va., United States)
Bryant, C. S. (NASA Langley Research Center National Transonic Facility, Hampton, Va., United States)