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

Technical Report · Wed Feb 01 04:00:00 EST 1961

OSTI ID:4833131

Rosner, D E

Estimates are given of the Lewis-Semenov number and the chemical contributions to the heat capacity, enthalpy, thermal conductivity, heat fiux potential, and Prandtl number for equilibrium dissociating hydrogen at 1000 to 4000 deg K and at total pressures of 0.1 to 100 atmospheres. 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 nuclear-thermal rocket, it is concluded that specific impulse gains can be made only by reducing the chamber pressure level. (auth)

• Research Organization: AeroChem Research Labs., Inc., Princeton, N.J.
• NSA Number: NSA-16-002789
• OSTI ID: 4833131
• Report Number(s): NP-10934
• Country of Publication: United States
• Language: English

Related Subjects

CONVECTION
COOLING
ENTHALPY
FLUID FLOW
HEATING
NOZZLES
PRANDTL NUMBER
PRESSURE
PRESSURE VESSELS
PYROLYSIS
REACTORS
ROCKETS
SPACE APPLICATIONS AND TECHNOLOGY
SPECIFIC HEAT
TEMPERATURE
THERMAL CONDUCTIVITY
THERMODYNAMICS
VISCOSITY