STUDY OF ROCKET ENGINE EXHAUST PRODUCTS.

Abstract

Determination of the vapor pressure curve for BeF2(s) between 713 and 793K by means of the torsion effusion technique has led to values of 58.1 = 0.7 kcal/mole and 47.8 = 0.9 cal/degree/ mole for the enthalpy and entropy of sublimation of this material at 298K. Combination of these values with previously reported values for the enthalpy and entropy of vaporization of BeF2 leads to values of 1.6 = 0.8 kcal/mole and 4.2 = 1.1 cal/degree/mole for the enthalpy and entropy of fusion of BeF2 at its melting point (815K). Employing a new experimental technique and a new method of data analysis the dissociation energy of the F2(g) molecule at 298K has been found to be 41.1 kcal/mole. This value essentially substantiates a number of previously reported values in the 37-40 kcal/mole region. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 31, 1964
Accession Number
AD0609303

Entities

People

  • J. A. Blauer
  • M. A. Frisch
  • M. A. Greenbaum
  • M. Arshadi
  • R. E. Yates

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Data Analysis
  • Dissociation
  • Effusion
  • Engines
  • Enthalpy
  • Fluids
  • Isothermal Processes
  • Materials
  • Melting
  • Melting Point
  • Molecules
  • Phase Transformations
  • Rocket Engines
  • Sublimation
  • Vapor Pressure
  • Vaporization
  • Vapors

Readers

  • Combustion science or combustion engineering.
  • Military History of the United States in the 20th Century.