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Comparison of Test Stand and Helicopter Oil Cooler Bearing Condition IndicatorsThe focus of this paper was to compare the performance of HUMS condition indicators (CI) when detecting a bearing fault in a test stand or on a helicopter. This study compared data from two sources: first, CI data collected from accelerometers installed on two UH-60 Black Hawk helicopters when oil cooler bearing faults occurred, along with data from helicopters with no bearing faults; and second, CI data that was collected from ten cooler bearings, healthy and faulted, that were removed from fielded helicopters and installed in a test stand. A method using Receiver Operating Characteristic (ROC) curves to compare CI performance was demonstrated. Results indicated the bearing energy CI responded differently for the helicopter and the test stand. Future research is required if test stand data is to be used validate condition indicator performance on a helicopter.
Document ID
Document Type
Conference Paper
Dempsey, Paula J.
(NASA Glenn Research Center Cleveland, OH, United States)
Branning, Jeremy
(Redstone Scientific Information Center Redstone Arsenal, AL, United States)
Wade, Damiel R.
(Redstone Scientific Information Center Redstone Arsenal, AL, United States)
Bolander, Nathan
(Sentient Corp. Idaho Falls, ID, United States)
Date Acquired
August 24, 2013
Publication Date
May 11, 2010
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
Meeting Information
AHS 66th Annual Forum and Technology Display: Rising to New Heights in Vertical Lift Technology(Phoenix, AZ)
Funding Number(s)
WBS: WBS 877868.
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