A broad-range pressure sensor concept immune to harsh environments and extreme temperatures is required for research measurements in wind-tunnel testing. The pro- posed sensor--fabricated as integral terminus of a single multimode fiber optic cable -- is essentially all glass and hence immune to high temperature a well as electromagnetic interference. The results of a Phase I study as delineated in the final report indicate that the pressure sensor is indeed feasible. Critical theoretical and experimental aspects of the system design--sensor element and optical demodulator - were considered during Phase I and determined to verify pro-posed fabrication procedures for a prototype model. Also the design of the microprocessor interface was generated. Accuracy analysis both experimental and theoretical show great potential for the pressure sensor system; however, evaluation needs to proceed further using a complete prototype system. Thus the overall objective of a Phase II project is to fabricate brass-board development system. The individual tasks required to meet this objective compose the Phase II statement of work as follows: (1) fabricate a sensor family for a range of pressure, (2) develop batch-processed, plastic-optic demodulator for circuit board utilization, (3) fabricate stand-alone pressure sensor electronics, and (4) test the completed system in wind-tunnel environments. For lack of appropriate sensors. The development of an curate, broad-range, multi-purpose pressure sensor family which is immune to electrical noise and extreme temperaturePotential Commercial Application:Multi-purpose pressure sensors which are immune to electrical noise and extreme temperature environments could find broad applications in process and automotive industries as well as in the military.STATUS: Project Proceded to Phase II
