Frozen Sonic Flow Method Applied to Arc-Heated Facilities for Planetary Re-Entry Simulation

Aerotecnica Missili & Spazio

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Title Frozen Sonic Flow Method Applied to Arc-Heated Facilities for Planetary Re-Entry Simulation
Creator Esposito, Antonio
Aponte, Francesco
Subject Aerothermodynamics
planetary entry; arc wind tunnels
simulation, wind tunnel testing
Description The most important parameter in low-density arc-heated ows for atmosphere entry simulations is the centerline totalenthalpy Hcl which is strictly related to the average total enthalpy Hne (bulk enthalpy at nozzle exit). In this paperthe "sonic ow method" widely used for Hcl calculation in mono-atomic and diatomic molecules gas mixtures, has beenextended to polyatomic molecules gas mixtures. By means of a reduced-scale arc-jet facility and using Nitrogen N2 as hotfeeding gas, three mixtures were investigated by adding cold gases like O2, CO2 and CH4 through a mixer just before thenozzle. Using bulk enthalpies ranging between 5 and 30 [MJ=Kg] the calculated enthalpy ratios were Hcl=Hne = 1:38for N2
Publisher Associazione Italiana di Aeronautica e Astronautica (AIDAA)
Date 2018-10-22
Type info:eu-repo/semantics/article
Peer-reviewed Article
experimental; simulation
Format application/pdf
Source Aerotecnica Missili & Spazio; Vol 97, No 3 (2018); 153-162
Language eng
Rights Copyright (c) 2018 Aerotecnica Missili & Spazio

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