Engineering topics
Publications and source records attributed to Buckley, J. D..
Reusable surface insulation is considered a prime candidate for heat shielding large areas of the space shuttle vehicle. The composition and fabrication of RSI materials are discussed, followed by evolution of RSI and current problems, physical and thermal properties, arc plasma test data and results, and material improvement research. Finally, a summary of RSI technology status is presented.
Air sintered oxides stabilized hafnia body compositions and phases from X ray diffraction and electron microprobe correlation, noting monoclinic and cubic grains
Two grades of hot pressed boron nitride and a boron nitride composite were subjected to oxidation tests in a 2.5 megawatt atmospheric arc jet. The results showed that fabrication and/or composition influenced thermal shock and oxidation resistance. Changes in surface structure and recession due to oxidation suggest correlation with specimen composition. The boron nitride composite reacted with the oxygen in the hot subsonic airstream to produce a glassy coating on the hot face surface.
Pyrolitic boron nitride was exposed to 310 equivalent sun hours of ultraviolet radiation in a space environment simulator with the objective to evaluate its applicability as a pigment for a thermal control coating and to identify radiation damage using X-ray diffraction techniques. Lattice parameter comparisons show a definite increase in lattice imperfections in the crystal structure resulting from the ultraviolet irradiation. This sensitivity to radiation damage makes pyrolitic boron nitride unsuitable as a pigment for thermal control coating.
Thermal conductivity and shock resistance of flame and plasma sprayed zirconia coatings on Ni-Mo-C metal
Microstructure and composition of hafnium dioxide stabilized with Ca, Y and Mg oxides using metallographic, X ray and microprobe
Boron nitride and boron nitride composite under high temperatures in air and vacuum for various time periods, discussing thermal shock and oxidation resistance
Static oxidation and compatibility of boron nitride and boron nitride composite
Thermal conductivity, insulation, and thermal shock qualities of zirconium coatings on Hastelloy
Experimental investigation to evaluate high temperature performance and self-generating protective oxide coating of three JT graphite composites
Effect of temperature, density, and amount of stabilization on elastic modulus of zirconia
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Refractory oxide materials for use in high temperature pebble-bed wind tunnel heat exchangers
Deterioration of calcia-stabilized zirconia, refractory materials