Analysis of hypersonic nozzles including vibrational nonequilibrium and intermolecular force effects
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Engineering topics
Publications and source records attributed to Erickson, W. D..
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A scheme for rapidly computing the chemical equilibrium composition of hydrocarbon combustion products is derived. A set of ten governing equations is reduced to a single equation that is solved by the Newton iteration method. Computation speeds are approximately 80 times faster than the often used free-energy minimization method. The general approach also has application to many other chemical systems.
An ablation article, such as a conical heat shield, having an ablating surface is provided with at least one discrete area of at least one seed material, such as aluminum. When subjected to ablation conditions, the seed material is ablated. Radiation emanating from the ablated seed material is detected to analyze ablation effects without disturbing the ablation surface. By providing different seed materials having different radiation characteristics, the ablating effects on various areas of the ablating surface can be analyzed under any prevailing ablation conditions. The ablating article can be provided with means for detecting the radiation characteristics of the ablated seed material to provide a self-contained analysis unit.
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Numerical analysis of chemical kinetics of hydrogen-air combustion in presence of carbon dioxide and water vapor
Hypervelocity reentry simulation problems for slender and blunt bodies, defining significant parameters
Equations for rapid machine computation of chemical equilibrium composition of air for use in flow-field calculations
Design of hypersonic test facility for ablation tests and performance tests of vehicles under conditions of high temperature and pressure
Computing equilibrium chemical composition and thermodynamic properties of reacting gas mixtures by reduction to single iterative equation
Hypersonic test facility for studying ablation in models under high pressure and high temperature
Light scattering method for determining soot particle size and concentration in premixed laminar benzene-air flame
Wall coordinate calculations of hypersonic nozzle with real-gas effects
Helium parameters calculated to high stagnation temperatures and pressures below critical density to establish real gas behavior