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Title:Prediction of flight measurements of high enthalpy nonequilibrium flow from a cubesat-class atmospheric probe
Author(s):Morgan, Jonathan Deming
Advisor(s):Levin, Deborah A.
Department / Program:Aerospace Engineering
Discipline:Aerospace Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:M.S.
Genre:Thesis
Subject(s):hypersonic,nonequilibrium,cubesat,DSMC
Abstract:Spectral radiation is sensitive to many physical chemical aspects of high-enthalpy, non-equilibrium flows affect radiation and heat transfer estimates at low-earth altitudes, which is important as a flow diagnostic. For diatomic molecules, high energy collisions in the bow shock region result in ro-vibrionic transitions and release of photons in different wavelength bands. In this work, the Direct Simulations Monte Carlo (DSMC) method is used for the SASSI2 mission to determine the external flow field around a 3U CubeSat. The Nonequilibrium Radiative Transport and Spectra Program (NEQAIR) code is used to determine ultraviolet radiation from nitric oxide and the tangent slab approximation is used to estimate spacecraft visible glow radiance from nitrogen dioxide. Additional calculations are performed to provide a sensitivity analysis of radiance estimates based on the DSMC code utilized, chemical reaction rates, and CubeSat orientation.
Issue Date:2018-04-25
Type:Text
URI:http://hdl.handle.net/2142/101076
Rights Information:Copyright 2018 Jonathan Morgan
Date Available in IDEALS:2018-09-04
Date Deposited:2018-05


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