Theoretical rocket performance of JP-4 fuel with mixtures of liquid ozone and fluorine Page: 2 of 23
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TECH LIBRARY KAFB, NM
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NACA RM E56K14 0143985
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS
RESEARCH MEMORANDUM
THEORETICAL ROCKET PERFORMANCE OF JP-4 FUEL WITH MIXTURES
OF LIQUID OZONE AND FLUORINE
By Vearl N. Huff and Sanford Gordon
SUMMARY
Theoretical rocket performance was calculated for JP-4 fuel with
mixtures of ozone and fluorine. The data were estimated by means of a
heat-correction equation using data for JP-4 fuel with mixtures of oxygen
and fluorine. The estimated values were checked with several direct cal-
culations. The estimated data were based upon equilibrium composition
during expansion, while the directly computed data were obtained for both
equilibrium and frozen composition during expansion.
The maximum value of specific impulse was 334.9 pound-seconds per
pound for a combustion-chamber pressure of 600 pounds per square inch
absolute and an exit pressure of 1 atmosphere.
INTRODUCTION
Liquid-fluorine - liquid-ozone mixtures might serve as high-energy
oxidants for rocket propellants. A mixture of liquid fluorine and liquid
oxygen has been shown to give better performance with hydrocarbons than
either 100 percent fluorine or oxygen (ref. 1). This is due to the pref-
erential burning of fluorine with hydrogen and oxygen with carbon.
The substitution of liquid ozone for liquid oxygen provides the
advantages of greater energy and density. Available information indi-
cates that liquid-fluorine - liquid-ozone mixtures may be stable. If
stable mixtures can be produced, this oxidant might have practical appli-
cation. The performance of fluorine-ozone mixtures on the assumption of
chemical equilibrium during expansion may be obtained from the perform-
ance of fluorine-oxygen mixtures for chemical equilibrium by applying a
simple correction for the increased heat of reaction. A formula for such
a correction is given in reference 2. The present report gives the spe-
cific impulse of fluorine-ozone mixtures with JP-4 fuel obtained with
this correction equation and compares it with several direct computations.
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Huff, Vearl N. & Gordon, Sanford. Theoretical rocket performance of JP-4 fuel with mixtures of liquid ozone and fluorine, report, January 28, 1957; (https://digital.library.unt.edu/ark:/67531/metadc63203/m1/2/: accessed March 29, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.