SPECTROSCOPIC MEASUREMENTS AND NON-EQUILIBRIUM MODELING FOR HIGH-ENTHALPY AIR
Abstract
New flight vehicle concepts are being developed that involve sustained flight at high speeds in the atmosphere, including near-space, where nonequilibrium effects become important. To support this endeavor, new nonequilibrium chemistry models for high-temperature air are under development using results from computational chemistry. However, the validation of kinetic models for flight applications is hampered by the lack of experimental data that directly probe molecular interactions in hypersonic flows. A research collaboration between Caltech, Stanford, and the University of Minnesota (MN) is proposed to apply spectroscopic measurement techniques to probe molecular and atomic states in hypervelocity, nonequilibrium air flows directly. First-principles modeling efforts will be extended to predict recombination chemistry under thermal nonequilibrium conditions and to include electronic energy excitation. Experimental configurations and conditions will be selected collaboratively, extending previous work in dissociating flows to both recombining flows and flows with electronically-excited states.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 06, 2024
- Source ID
- FA95502310446
Entities
People
- Joanna Austin
Organizations
- Air Force Office of Scientific Research
- California Institute of Technology
- United States Air Force