Accession Number:

AD0257863

Title:

PROPERTIES OF EQUILIBRIUM DISSOCIATING HYDROGEN FOR PREDICTING CONVECTIVE HEATING IN NUCLEAR THERMAL ROCKETS

Descriptive Note:

Corporate Author:

AEROCHEM RESEARCH LABS INC PRINCETON N J

Personal Author(s):

Report Date:

1961-02-01

Pagination or Media Count:

1.0

Abstract:

Estimates are given of the Lewis-Semenov number and the chemical contributions to the heat capacity, enthalpy, thermal conductivity, heat flux potential and Prandtl number for equilibrium dissociating hydrogen in the temperature range from 1000 to 4000 K and at total pressures of 0.1, 1.0, 10 and 100 atm. In applying these data to the nuclear-thermal rocket nozzle cooling problem, a new convection-product parameter is introduced and evaluated. It is proposed that equality of this convection-product parameter implies the approximate equality of the convective heat flux intensity regardless of physical scale, pressure level or choice of working fluid. If the nozzle cooling requirement limits the potential performance of a nuclearthermal rocket, it is concluded that specific impulse gains can be made only by reducing the chamber pressure level. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE