Accession Number:

ADA250207

Title:

Kinetic Studies of Metal Combustion in Propulsion

Descriptive Note:

Final rept. 1 Dec 1988-29 Feb 1992

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY NY

Personal Author(s):

Report Date:

1992-04-17

Pagination or Media Count:

15.0

Abstract:

Advanced propulsion system designs require quantitative understanding of the temperature-dependent kinetics of the gas-phase oxidation reactions of the metallic fuel components. To this end experimental rate coefficient measurements have been made on aluminum and boron species, in the 440-1830 K temperature range, in a high-temperature fast-flow reactor HTFFR. Results are reported for the following individual reactions Al N20 A10 C12 A10 HC1 A10 CH4 A1C1 C 02 A1C1 N20 A1C1 HC1 BC1 C02 BC1 N20 BC1 SO2. The reaction products are discussed. For several series of homologous exothermic reactions correlations are established between the activation barriers and the sums of the s-p or sigma-pie promotion energies and the ionization potentials of the metallic reactants minus the electron affinities of the oxidants. These series are the reactions of alkali metal atoms with N20, group 2 and transition metal atoms with N20, boron group atoms with N20, and A1C1, BC1, BF and BH with 02, C02, N20 and S02. These correlations are explained on the basis of chemical resonance theory. Calculations based on this semi-empirical approach are shown to agree well with experiment. Combustion Kinetics, Ramjets, A10, BH, High Temperature, AlCl, BC1, Solid Rocket Propulsion.

Subject Categories:

  • Physical Chemistry
  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE