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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Porous copper mandrels prevent uneven deformation of beryllium machining blanks. The beryllium powder is arranged around these mandrels and hot isostatically pressed to form the blanks. The mandrels are then removed by leaching.
Laminar flows of viscous fluids in porous elastic channels
Skin friction under mass injection on porous flat plate in supersonic turbulent flow
Self-lubricating properties of composites of porous nickel and nickel-chromium alloy impregnated with barium fluoride-calcium flouride eutectic
Skin friction under mass injection on porous flat plate in supersonic turbulent flow
Pores of the material were plugged with dust particles suspended in water. The plugging material used was a standard test dust prepared as a slurry in distilled water. This technique provides a permanent high-integrity seal for porous material without affecting its physical properties, yet permitting pressure testing to verify structural adequacy.
Mass transfer cooling on porous flat plate in carbon dioxide and air streams
Temperature distributions measured on top surface of cylindrical specimens for determining effective thermal conductivity of solid and porous tungsten in vacuum and hydrogen
Polarization in porous oxygen electrodes
Penetration of porous projectiles in aluminium and plastic targets
Plate-gap model of porous solid and application to reduced density projectile impact
Transpiration cooling of porous flat plate by injection of carbon dioxide or air into carbon dioxide and air free streams
This study program was conducted to obtain a sound theoretical understanding of and a valid analytical method for predicting the performance of porous plate water boilers.
Results of experiments on hydrogen-oxygen fuel cells show that higher current densities are obtained with cell anodes having a 100 micron thin active layer of porous nickel containing silver electrocatalyst. Increase in current density is attributed to a convective mass transport mechanism.
Nonlinear method for predicting acoustic properties of thin porous sheets
Performance tests of wind tunnel model inlet for bleed system back pressure and porous area effect of axisymmetric compression
Flow reduction due to oxidation of wire-form porous materials for transpiration cooled turbine blades
Thermal and structural design analysis of strut supported, porous wall turbine vane