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

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)

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1961
Accession Number
AD0257863

Entities

People

  • Daniel E. Rosner

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Conductivity
  • Convection
  • Gas Turbine Nozzles
  • Heat Capacity
  • Heat Flux
  • Hydrogen
  • Nozzles
  • Prandtl Number
  • Rocket Nozzles
  • Rockets
  • Specific Impulse
  • Thermal Conductivity
  • Thermal Propulsion Systems

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Combustion science or combustion engineering.
  • Operations Research