Partition functions and thermodynamic properties to high temperatures for H sub 3 and H sub 2 ions
Partition functions and thermodynamic properties to high temperatures for hydrogen triatomic and diatomic molecular ions
Mc Bride, B. J.↗
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Partition function of the Morse vibrating- rotator model of a diatomic molecule.
Diatomic molecules vibration-rotation partition function calculation by model with Morse potential
Patch, R. W.↗
Partition functions of the ground electronic states of H sub 3 super plus and H sub 2 super plus.
Partition functions for ground electronic states of positive simple H and trihydrogen molecular ions
Patch, R. W.↗
Components of a hydrogen plasma including minor species
Number densities of hydrogen species in hydrogen plasma - tables
Patch, R. W.↗
Calculated interaction energy and dipole moment in collisions of two hydrogen molecules
Interaction energy and dipole moment in collisions of two hydrogen molecules
Patch, R. W.↗
Interim absorption coefficients and opacities for hydrogen plasma at high pressure
Interim absorption coefficients and opacities for hydrogen plasma at high pressure
Patch, R. W.↗
Absorption coefficients for hydrogen. I.
Hydrogen absorption coefficients, giving number densities in hydrogen gas or plasma for wide range of temperature and pressure
Patch, R. W.↗
Semiempirical electric dipole moment and its derivative in H2-H2 and H2-H collisions
Semiempirical electric dipole moment and derivative in molecular-molecular and molecular-atomic collisions of hydrogen
Patch, R. W.↗
Ultrasonic measurement of core material temperature Final report
Ultrasonic measurement of core material temperature in nuclear rocket engines
Lynnworth, L. C.↗
New sensors for ultrasound - Measuring temperature profiles
Ultrasonic measurement of temperature distribution in solid, liquid and gaseous media, using reflection and transmission techniques
Lynnworth, L. C.↗
Calculated pressure-induced vibrational absorption in H2-H2 collisions in hydrogen gas
Pressure effects on high temperature vibrational absorption coefficients for atomic hydrogen collisions in hydrogen gas
Patch, R. W.↗
Shock tube technique for measuring opacities at high pressures for gaseous-core nuclear rockets
Potential high performance shock tube for high pressure opacity measurements of gaseous rocket propellants for nuclear rocket engines
Patch, R. W.↗
Status of opacity calculations for application to uranium fueled gas core reactors
Opacity calculations for application to uranium fueled gas-core reactors
Patch, R. W.↗
Theory of pressure-induced vibrational and rotational absorption of diatomic molecules at high temperatures
Integrated absorption coefficient of pressure induced pure rotational and vibrational transitions in binary collisions of homonuclear diatomic molecules at high temperatures
Patch, R. W.↗
Absorption coefficients for hydrogen. II - Calculated pressure-induced H2-H2 vibrational absorption in the fundamental region
Pressure induced hydrogen collisions vibrational spectra absorption coefficients at high temperatures and local thermodynamic equilibrium
Patch, R. W.↗
Thermodynamic properties and nozzle flow of hydrogen to 1000 atm and 100,000 K
Thermodynamic properties and nozzle flow calculations for high temperature and pressure hydrogen, presenting results in Mollier diagram
Patch, R. W.↗
Thermodynamic properties and theoretical rocket performance of hydrogen to 100,000 K and 1.01325 x 10 to the 8th power N/sq m
The composition and thermodynamic properties were calculated for 100 to 110,000 K and 1.01325 x 10 to the 2nd power to 1.01325 x 10 to the 8th power N/sq m for chemical equilibrium in the Debye-Huckel and ideal-gas approximations. Quantities obtained were the concentrations of hydrogen atoms, protons, free electrons, hydrogen molecules, negative hydrogen ions, hydrogen diatomic molecular ions, and hydrogen triatomic molecular ions, and the enthalpy, entropy, average molecular weight, specific heat at constant pressure, density, and isentropic exponent. Electronically excited states of H and H2 were included. Choked, isentropic, one-dimensional nozzle flow with shifting chemical equilibrium was calculated to the Debye-Huckel and ideal-gas approximations for stagnation temperatures from 2500 to 100,000 K. The mass flow per unit throat area and the sonic flow factor were obtained. The pressure ratio, temperature, velocity, and ideal and vacuum specific impulses at the throat and for pressure ratios as low as 0.000001 downstream were found. For high temperatures at pressures approaching 1.01325 x 10 to the 8th power N/sq m, the ideal-gas approximation was found to be inadequate for calculations of composition, precise thermodynamic properties, and precise nozzle flow. The greatest discrepancy in nozzle flow occurred in the exit temperature, which was as much as 21 percent higher when the Debye-Huckel approximation was used.
Patch, R. W.↗
Shock tube technique for measuring opacities at high pressures for gaseous-core nuclear rockets.
A new method of opacity determination is described that uses an improved shock tube design and is applicable to measurements of Planck and Rosseland mean opacities in hydrogen or seeded hydrogen at hydrogen partial pressures of 500 atm, at temperatures from 2300 to 8000 K. The selection of seed materials to be added to the gases to make them semiopaque is discussed. Currently favored seeds are silicon and carbon or graphite for reactive seeds, and depleted uranium and tungsten 184 for nonreactive seeds.
Patch, R. W.↗