Lead oxide /pbo/ and other metal oxides as solid lubricants for temperatures to 1000 deg f
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Johnson, R. L.↗
SEARCH · Engineering Papers
Results for “Lubricants”
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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Influence of a vacuum environment on friction and lubrication studies
Influence of vacuum system and oxygen partial pressures on friction behavior of metals in sliding contact
METAL↗
Studies of rolling-element lubrication and fatigue life in a reduced pressure environment.
Five-ball fatigue tester to investigate reduced pressure environment effect on rolling element fatigue life with polyphenyl ether
ROLLING CONTACT BEARING↗
A survey of vacuum lubrication developments
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Kingsbury, J. E.↗
Incompressibly lubricated Rayleigh step journal bearing. 1 - Zero-order perturbation solution
Theoretical analysis of pressure distribution, load capacity, load angle, and friction force for single-step concentric journal bearing
Anderson, W. J.↗
Studies of rolling-element lubrication and fatigue life in a reduced pressure environment.
Ozone mixing ratio distribution on isobaric surfaces, discussing commercial aviation hazards, correlation with absolute potential vorticity and sandwich stratosphere
Parker, R. J.↗
Incompressibly lubricated Rayleigh step journal bearing. 2 - Infinite-length solution
Theoretical analysis of pressure distribution, load capacity, attitude angle, and friction force for eccentric Rayleigh step journal bearing - infinite length solution
Anderson, W. J.↗
The use of a heat shrinkable sleeve in a lubricant-free connector for glass vacuum systems.
Glass vacuum systems grease free assembly method using heat shrinkable polyolefin sleeve tubing connector for compression of O ring joints
Del Duca, B. S.↗
Effect of three advanced lubricants on high- temperature bearing life.
Steel ball bearing high temperature fatigue life tested with synthetic paraffinic oil, fluorocarbon and polyphenyl ether
Anderson, W. J.↗
Elastohydrodynamic lubrication of a spinning ball in a nonconforming groove.
Elastohydrodynamic solution for ball torque spinning without rolling in nonconforming groove, showing increase in torque with stress and spinning and decreasing conformity
Allen, C. W.↗
Experiments on the stability of water-lubricated three-sector hydrodynamic journal bearings at zero load
Hydrodynamic journal bearing stability tests of three sector bearings
Anderson, W. J.↗
Effects of antiwear and extreme pressure additives in a synthetic paraffinic lubricant on ball spinning torque
Effects of antiwear and extreme-pressure additives in synthetic paraffinic oil on ball spinning torque
Townsend, D. P.↗
Externally pressurized gas-lubricated journal bearings with herringbone grooves - Load capacity and stability analysis
Eccentricity analysis to predict load capacity and stability
Fleming, D. P.↗
Microasperity model for elastohydrodynamic lubrication of a spinning ball on a flat surface
Dry contact deformation theory and point contact elastohydrodynamic theory for microasperity model of spinning ball on flat surface
Allen, C. W.↗
Steady-state experiments on rotating externally pressurized air-lubricated journal bearings.
Externally pressurized air journal bearings load capacity, film stiffness, attitude-eccentricity locus and mass flow, studying supply pressure and shaft rotation effects
Anderson, W. J.↗
Evaluation of rotating, incompressibly lubricated, pressurized thrust bearings
Program evaluates a series hybrid, fluid film ball bearing consisting of an orifice compensated pressurized thrust bearing in conjunction with a self-acting journal bearing. Oil viscosities corresponding to experimentally measured ball bearing outer-race temperatures were used.
Fleming, D. P.↗
Critical speeds of a rotor in rigidly mounted, externally pressurized, air-lubricated bearings
Calculation of rotor critical speeds for two bearing rotor system from rigid body theory using film stiffness as determined from zero speed, load eccentricity data
Cunningham, R. E.↗
Dynamic behavior of air lubricated pivoted-pad journal-bearing, rotor system. 2: Pivot consideration and pad mass
Rotor bearing dynamic tests were conducted with tilting-pad journal bearings having three different pad masses and two different pivot geometries. The rotor was vertically mounted and supported by two three-pad tilting-pad gas journal bearings and a simple externally pressurized thrust bearing. The bearing pads were 5.1 cm (2.02 in.) in diameter and 2.8 cm (1.5 in.) long. The length to diameter ratio was 0.75. One pad was mounted on a flexible diaphragm. The bearing supply pressure ranged from 0 to 690 kilonewtons per square meter (0 to 100 psig), and speeds ranged to 38,500 rpm. Heavy mass pad tilting-pad assemblies produced three rotor-bearing resonances above the first two rotor critical speeds. Lower supply pressure eliminated the resonances. The resonances were oriented primarily in the direction normal to the diaphragm.
Nemeth, Z. N.↗