Combustion Kinetics of Reentry Vehicle Ablation Materials.
Abstract
The C2F4 to 2CF2 equilibrium constant, (K sub p), in excess argon has been experimentally obtained behind incident and reflected shock waves over the temperature and total pressure ranges 1176-1779K and 1.27-4.52 atmospheres, respectively. Results were obrained using CF2 absorption at 2804 angstroms, a unique thermodynamic treatment of the measured chemical relaxation process, and second and third law analysis of the data. The decomposition of C2F4 in excess argon has been experimentally determined using both incident and reflected shock waves covering the temperature and total concentration ranges 1267-1700K and 0.99-4.20 x (10 to the -5th power) moles/cc, respectively. The high temperature kinetics of C2F4 oxidation were experimentally investigated in excess argon. The elementary rate constant for the reaction CF2+O2 to COF2+O was obtained. The afterburning region of tetrafluoroethylene-oxygen flames has been studied over the pressure range 80-85 torr. Composition and temperature profiles were analyzed from both a chemical equilibrium and chemical kinetic point of view. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1973
- Accession Number
- AD0778954
Entities
People
- Richard A. Matula
Organizations
- Drexel University