Accession Number:

AD0271508

Title:

THERMODYNAMIC PROPERTIES OF ROCKET COMBUSTION PRODUCTS

Descriptive Note:

Corporate Author:

PHILCO NEWPORT BEACH CALIF AERONUTRONIC DIV

Personal Author(s):

Report Date:

1962-02-01

Pagination or Media Count:

1.0

Abstract:

REACTION OF WATER VAPOR WITH THE Ta heat shields is responsible for H production. A new reaction cell, also made of W, is described. Mass spectrometric studies of the BeO-H2O systemAT 1938 K, showed no detectable amounts of gaseous OH species present. A lower limit of -181 kcalmole for the heat of formation of BeOH2 g at 298 K was derived. A mixture of Be metal and BeO in the mass spectrometer gave evidence for the presence of Beg in the effusing vapor at temperatures up to 1800 K. Mass spectra for the Be-BeO mixture in the presence of water vapor contained no measurable intensities of BeOH at 1800 K. A lower limit of -21 kcalmole was derived for the heat of formation of BeOHg at 289 K. A table of thermodynamic functions for condensed BeO was compiled. The vapor pressure of crystalline BeF2 was measured by the torsion-effusion method over the range of 810 to 925 K. Average of second and third law values of the heat of sublimation of BeF2 at 298 K is 58.0 or -2 kcalmole. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE