Accession Number : AD0275330

Title :   THERMODYNAMIC PROPERTIES OF ROCKET COMBUSTION PRODUCTS

Corporate Author : PHILCO NEWPORT BEACH CALIF AERONUTRONIC DIV

Personal Author(s) : HILDENBRAND,D.L. ; THEARD,L.P.

Report Date : 01 MAY 1962

Pagination or Media Count : 1

Abstract : The temperature limit of the mass spectrometer Knudsen cell has been extended to beyond 2700 K by using two heating filaments connected in parallel and by doubling the output capacity of the filament power supply. With a tungsten crucible, temperature can be maintained constant to within 10 degrees for extended periods. The mass spectrum of the equilibrium vapor above a mixture of beryllium powder and solid beryllium oxide at 1500 K contains only Be(+) ions, whose appearance potential was 9.3 ! 0.2 ev. The source of Be(+) is the reaction Be + e = Be(+) + 2e. The Be(+) ionization efficiency curve gave no evidence of fragmentation at higher ionizing electron energies. The vaporization of beryllium oxide and its reaction with tungsten was studied in the range 2300 - 2600 K. A single run with water vapor and beryllium oxide at 2580 K gave evidence for BeOH+ ions in the mass spectrum of the equilibrium vapor. (Author)

Descriptors :   *BERYLLIUM, *MASS SPECTROSCOPY, LIQUID ROCKET PROPELLANTS, SOLID ROCKET PROPELLANTS, THERMODYNAMICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE