Smoothed Particle Inference Analysis of SNR DEM L71
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Local values of heat transfer coefficients have been measured experimentally for helium and hydrogen gas flowing through an electrically heated inconel tube. The experiment was conducted primarily to determine the effect on the heat transfer coefficient of a large density change, radially, in the heat transfer fluid. This large density change was accomplished with relatively high surface temperatures as compared to fluid bulk temperatures or more commonly referred to as high surface to fluid bulk temperature ratio. The large temperature ratio was achieved by precooling the gas with liquid nitrogen. Data were measured for local values of surface to fluid bulk temperature ratios up to 4.5, Reynolds numbers in the turbulent flow region, surface temperatures up to 2300° R, heat flux up to 1,600,000 Btu/(hr)(sq ft) and length to diameter ratio of 250. A comparison of this data with the conventional heat transfer· correlation equation (Dittus-Boelter eq.) is shown on a curve of Nusselt number divided by Prandtl number versus the Reynolds number. The gas properties were evaluated at the film temperature and the Reynolds number was modified by evaluating the velocity term at the fluid bulk temperature and the density at the film temperature.
Calculation of coefficients used to reduce effect of random error in flight test observations
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Elementary sulfur mixed into a solution of caustic soda and salts produces an etchant which will chemically mill end-grain surfaces on aluminum plate. This composition results in the least amount of thickness variation and pitting.
Heat transfer coefficients for helium and hydrogen gas flowing through electrically heated Inconel tube
Noise removal and deconvolution techniques applied to resolution of beam collison experiments
Air flow heat transfer in annular channels with resistance provided by aperture roughness
Inviscid hypersonic flow with finite rate chemistry about axisymmetric bodies calculated using Maslen approximation
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Statistical specification of 500 mb height fields using medium resolution radiometric fields of Nimbus 2
Outer and inner curved plates and shell shapes optimized by conformal mapping
Dynamic parameters of sun and planet interaction for predicting sunspots
Venera-5 space flight and instrument landing on Venus
Maximum likelihood smoother using measurements containing correlated noise for application to continuous linear dynamic systems such as inertial navigation
Model input requirements, flow charts, and program listing for launch vehicle assignment
Digital circuit produces rational output pulse rate at fraction of continuous input pulse rate. Output pulses have average rate with least possible deviation from absolute correct time spacing. Circuit uses include frequency synthesizing, fraction generation, and approximation of irrational sequences.