Operating Characteristics of a Cantilever-mounted Resilient-pad Gas-lubricated Thrust BearingNational Aeronautics and Space Administration, Scientific and Technical Information Office, 1979 - Bearings (Machinery) - 27 pages |
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Page 4
... weight of the shaft . The unit loading on the thrust bearing pads was 16.8 kilonewtons per square meter . - An externally pressurized shaft lift bearing was incorporated into the thrust test bearing for startup and shutdown ( fig . 5 ) ...
... weight of the shaft . The unit loading on the thrust bearing pads was 16.8 kilonewtons per square meter . - An externally pressurized shaft lift bearing was incorporated into the thrust test bearing for startup and shutdown ( fig . 5 ) ...
Page 6
... shaft weight from the test thrust bear- ing . The capacitance probe signal was zeroed at zero film thickness between the pad and runner surfaces . This proved to be somewhat difficult because of the flexibly mounted pad on the ...
... shaft weight from the test thrust bear- ing . The capacitance probe signal was zeroed at zero film thickness between the pad and runner surfaces . This proved to be somewhat difficult because of the flexibly mounted pad on the ...
Page 9
... weight of the shaft on the bear- ing . Wear of the surface coating would tend to smooth out the surface and fill the somewhat porous Cr2O3 surface , thereby increasing the film thickness . Film thickness . Comparison of Test Results ...
... weight of the shaft on the bear- ing . Wear of the surface coating would tend to smooth out the surface and fill the somewhat porous Cr2O3 surface , thereby increasing the film thickness . Film thickness . Comparison of Test Results ...
Common terms and phrases
104 Shaft speed 16.8 kilonewtons 20x103 Rotor speed 74 newtons alinement approximately bearing friction torque bearing surfaces bearing was run cantilever beams cantilever-mounted resilient-pad gas center of pressure centimeters clamped bearing mount clearance as function Externally pressurized bearing Figure 9 foil bearings function of rotor gas bearings gas film gas thrust bearing gimbal mount High Speed Increasing speed Induction probes journal bearing kilonewtons per square Lewis Research Center lift bearing load of 74 lubricant mating runner minimum film thickness N-cm NASA Nemeth Operating Characteristics pad and beam pad probes pad surfaces predicted by theory probe 13 probe location probe signal Rayleigh step bearing Rayleigh step thrust resilient-pad gas thrust self-alining gimbal shaft weight shown in figure speed range step thrust bearing test thrust bearing theoretical film thickness thickness at probe three bearing assemblies torque as function torque sensor torque was greater touchdown speed uniform minimum film unit load