Multichannel Detection Systems Available for Flow Diagnostics at AEDC (Arnold Engineering Development Center)

Abstract : With escalating aerospace ground testing costs, it has become imperative to reduce test duration and yet maintain the quantity and quality of test data. because many of the non-perturbing flow diagnostic techniques developed at AEDC require a measurement of either induced or spontaneous emitted radiation, data acquisition time can be reduced if the spatial, spectral, and temporal variations of the radiation can be measured simultaneously. To achieve this reduction in data acquisition time, AEDC personnel have developed two multichannel radiation detection systems. The details of these two systems and an assessment of their capabilities are presented, and recommendations for improvements are made.