Engineering topics
Publications and source records attributed to Ballance, J. O..
The evolution of the present Spacelab mode of operation to allow optimal utilization of the newly developing augmentation system is described. The following new systems are considered: the Power Extension Package, the Power System, and the Science and Applications Space Platforms. The projected models are analyzed, showing how each system would be utilized to provide benefits to the users' missions.
In the application of Monte Carlo computer techniques to the study of problems in the free molecular flow regime, the analogy between radiation heat transfer with diffuse emissions and the free molecular flow field makes it possible to use the radiation configuration factors as a test on the operation of the Monte Carlo program. A source plane which was an annular ring of arbitrary radius around a sphere with the center of the disk coincident with the center of the sphere was examined. Since various indicators seemed to verify the correct operation of the program, the program was used to calculate the radiation configuration factors. The study adds a new geometry to the general literature on radiation configuration factors.
Scientific experiments, instrumentation requirements, and operational aspects of manned mission to planet Mars
Satellite-borne experiments of neutral molecular beam-solid surface interactions, describing Molsink chamber, densitometer, sphere and paddlewheel satellites
Fluid dynamic response characteristics of Explorer ionization gage data for orbital analysis
Monte Carlo computer analysis on molecular kinetics of Bayard-Alpert and redheat vacuum gages for Explorer 17 and Explorer 32 satellites
Satellite-borne experiments of neutral molecular beam-solid surface interactions, describing Molsink chamber, densitometer, sphere and paddlewheel satellites
Monte Carlo calculation of drag coefficients in free molecular flow with wake and reflection effects
Thermosphere neutral particles analyzed with rocket probe, measuring diurnal variations of molecular nitrogen and electron density and temperature altitude profiles
Monte Carlo computer analysis of free molecular flow characteristics of thermosphere probe
Monte Carlo method, and radiant heat transfer to analyze impact pressure probes
Transmission probability describing free molecular flow through vacuum systems obtained via Monte Carlo program
Monte Carlo approach to transition and free molecular flow problems having mass as well as thermal motion of molecules
Rarefied gas dynamics, environmental measurements at ultrahigh altitudes, and aerodynamic test facility improvement studies
Monte Carlo computer program for transmission probability for gas molecular flow through two coaxial cylinders in series
Monte carlo computer solutions of knudsen and near-knudsen flow through wide, parallel, and skewed flat plates
Monte carlo computer technique applied to focusing of cryopump configurations in free molecular flow region
Molecular distribution under free molecular flow conditions within surfaces of simple geometries