Accession Number:

AD0811156

Title:

IDENTIFICATION OF EXHAUST SPECIES FROM THE COMBUSTION OF LM AND LMH FUELS.

Descriptive Note:

Quarterly rept. no. 2, 1 Dec 66-28 Feb 67,

Corporate Author:

DENVER RESEARCH INST CO

Report Date:

1967-03-01

Pagination or Media Count:

53.0

Abstract:

This is the second report of a twelve-month research program being conducted to study the metastable chemical species produced in boron fueled rocket plumes. Experimental studies of boron-fueled, air-augmented propellant systems indicate that metastable species are formed in the condensate fraction of the propellant stream. X-ray and differential scanning calorimetric analyses of the condensate fraction indicate the presence of one or more metastable intermediates. X-ray analysis shows a clearly defined crystallographic species exists in addition to the expected boron oxide and boron nitride. Differential scanning calorimetric analysis of the condensates formed during combustion of boron fuels show a relatively complex exothermic behavior between 298 and 1000 C. This indicates the presence of one or more species that have been quenched in a metastable condition. The infrared spectra of the plume emission for pentaborane fueled studies show chemiluminescence in the 5.3 - 5.8 micron region of the infrared. Similar chemiluminescence was not observed in the infrared for boron slurries, possibly indicating a different reaction mechanism. Author

Subject Categories:

  • Liquid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE