Effects of vibration and shock on the performance of gas-bearing space power Brayton cycle turbomachinery: Half-sine shock and sinusoidal vibration, Volume 1762
National Aeronautics and Space Administration, 1971 - Technology & Engineering - 194 pages
This report investigates half-sine shock and sinusoidal vibration tests of gas bearing supported rotor assembly and effects on mechanical performance of Brayton cycle space-power turbomachinery.
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acceleration accelerometer amplitude analytical applied vibration axial shock axial vibration bainite bearing contacts bearing flexure bearing performance bearing surfaces Brayton Cycle calculated and measured COMMON Compressor Journal Bearing computer program critical speeds curve damping coefficient DELTAV displacement equations excitation film thickness flexure FORMAT Forward Thrust Plate frequency range gas bearings gas-bearing gas-film gas-lubricated rotor-bearing systems half-sine haversine IFOFT INCHES initial Inspection isolation mounts Journal Bearing Pads lb/in linear mass milliseconds mode motion natural frequency nonlinear objective input operation orbital orbital resonance oscilloscope peak Plate and Runner probes reverse-thrust rigid mounts rotor shaft rotation shock and vibration shock pulse shock testing shown in Figure shows Simulator Mounted sinusoidal vibration space-power static equilibrium stiffness and damping SUBROUTINE thrust bearing thrust runner thrust-bearing gas film transverse response Transverse Tl turbine journal bearing turbocompressor vibration isolators vibration response vibration tests