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Condition Based vs. Time Based Maintenance: Case Study on Hypergolic PumpsTwo Pad 39B Ox pumps were monitored with the Baker Instruments Explorer Motor tester. Using the torque spectrum it was determined that Ox pump #2 had a significant peak at a frequency, which indicated lubricant fluid whirl. Similar testing on Ox pump #1 didn't indicate this peak, an indication that this pump was in good mechanical condition. Subsequent disassembly of both motors validated these findings. Ox pump #2 rear bearing showed significant wear, the front bearing showed little wear. Ox pump #1 was still within manufacturers tolerances.
Document ID
20130012715
Acquisition Source
Kennedy Space Center
Document Type
Conference Paper
Authors
Gibson, Lewis J. (United Space Alliance Cape Canaveral, FL, United States)
Date Acquired
August 27, 2013
Publication Date
August 13, 2007
Subject Category
Mechanical Engineering
Report/Patent Number
KSC-2007-145
Report Number: KSC-2007-145
Meeting Information
Meeting: Baker Instruments
Location: Fort Collins, CO
Country: United States
Start Date: August 13, 2007
End Date: August 16, 2007
Funding Number(s)
CONTRACT_GRANT: NNJ06V01C
Distribution Limits
Public
Copyright
Public Use Permitted.

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