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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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In this report we obtain further data about the distribution of bubbles in glass. It gives the results obtained from the microscopic study of obsidian samples heated with an oxyacetylene torch and from powdered microscopic slide glass re-fused in an electric oven. This report continues our earlier study of the distributions: Badri Aghassi, 1961, B.U. Tektite Project, Research Report No. 11.
Hand-operated disk calculator indicates the minimum size of letters and numbers in relation to the width and height of a working drawing. The lettering is legible when a slide of the drawing is projected.
Slide rule-type color chart determines the final reproduced gray tones in the production of briefing charts that are photographed in black and white. The chart shows both the color by drafting paint manufacturers name and mixture number, and the gray tone resulting from black and white photographic reproduction.
Use of fluid equations to investigate electrostatic instability in sliding plasmas subject to uniform magnetic field
Testing machine that operates without any lubrication of the machine elements within the vacuum chamber measures static friction and sliding friction at very low speeds. Moving parts are held to a minimum to simplify operation in the vacuum chamber.
Slide rule enables the ready conversion of transistor h parameters from one form to another and reduces calculation time by a factor of 5 to 10. The scales are selected to cover all ranges of each parameter that will normally exist for any transistor, and answers are given in the correct order of magnitude, making powers-of-ten calculations unnecessary.
Generation of series limit continua with aid of sliding sparks for absolute measurements in vacuum UV, observing bremsstrahlung
Lubrication of sliding and rolling element electric contacts in vacuum
Adhesion and sliding friction influenced by structure, orientation, and solubility of metal single crystals
Wear rate and friction coefficient of steel sliding on polymer laminates determined in liquid nitrogen and hydrogen
Influence of crystal structure, orientation, and solubility on adhesion and sliding friction of metal single crystals in vacuum
Summary data on deposition and endurance lives of thin metallic films used for lubricating sliding and rolling element electrical contacts in vacuum environments
Crystal structure and orientation, and solubility effects on adhesion and sliding friction of four metal single crystals in vacuum
K lubricated journal bearings materials friction and wear over temperature range in sliding contact in liquid K and high vacuum
Lubricating sliding and rolling element electrical contacts in vacuum
Sliding friction tests of Cu and Cu-Be alloy plates in contact with various alloy sliders in air and vacuum
Lubricating sliding and rolling element electrical contacts in vacuum
Sliding friction and wear behavior of copper alloys in air and vacuum