Accession Number : AD0468333

Title :   A STUDY OF COMBUSTION CATALYSIS AND PROPELLANT DECOMPOSITION BY MASS SPECTROMETRY.

Descriptive Note : Technical memo.,

Corporate Author : PICATINNY ARSENAL DOVER NJ

Personal Author(s) : Baumann, R. P. ; Picard, J. P.

Report Date : JUL 1965

Pagination or Media Count : 18

Abstract : A research project designed to gain an understanding of the mechanism of action of ballistic modifiers in nitrocellulose based propellants was carried out by New York University, under sub-contract to the National Lead Company. A study was undertaken to investigate the feasibility of using mass spectrometry to follow the reactions occuring on the decomposing surface of solid propellant grains. A special low pressure arc-image strand burner was designed and fabricated for monitoring on the New York University Mass Spectrometer. The spectrometer is a 60 degree sector fast scan machine allowing 1000 sweeps/second with an accuracy on simple mixtures with interfering peaks between 0.05 and 1.0%. The equipment worked extremely well and can be considered applicable to studying a wide range of solid propellants. A number of unstable species and free radicals were found; particularly, NO3, CH3CO, and CHO. These species were not only detected during and after burning but also were detected prior to any visual indication of decomposition. Preliminary data indicates that lead catalysts increase the rate of oxidationreduction reaction between, probably, CH3CO and NO3. (Author)

Descriptors :   (*SOLID ROCKET PROPELLANTS, COMBUSTION), (*DECOMPOSITION, SOLID ROCKET PROPELLANTS), (*COMBUSTION, CATALYSIS), (*MASS SPECTROSCOPY, DECOMPOSITION), FREE RADICALS, NITRATES, KETONES, ALDEHYDES, CATALYSTS, LEAD(METAL), NITROCELLULOSE, INSTRUMENTATION, SPECTROMETERS, OXIDATION REDUCTION REACTIONS, TABLES(DATA), EXPERIMENTAL DATA.

Distribution Statement : APPROVED FOR PUBLIC RELEASE