Intrusive and nonintrusive measurements of flow properties in arc jetsWhile numerous diagnostic techniques are available for determining the flow properties of arc jets, these have to be used complementarily in order to cover all the requisite information. Although intrusive techniques disturb the flow, they yield much information. The determination of total enthalpy remains a major challenge, and accurate heat-flux measurements entail knowledge of atom recombination and chemical energy recombination coefficients. Such state-specific methods as the spectroscopic and laser techniques are useful in understanding the chemistry and nonequilibrium reaction and excitation rates of the flow.
Document ID
19930058587
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Scott, Carl D. (NASA Johnson Space Center Houston, TX, United States)