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Feasibility study of a rotorcraft health and usage monitoring system ( hums): usage and structural life monitoring evaluation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Cronkhite, J. Hayden, R. Bielefeld, S. Dickson, B. Killian, L. |
| Copyright Year | 1996 |
| Description | The objective of this study was to evaluate two techniques, Flight Condition Recognition (FCR) and Flight Load Synthesis (FLS), for usage monitoring and assess the potential benefits of extending the retirement intervals of life-limited components, thus reducing the operator's maintenance and replacement costs. Both techniques involve indirect determination of loads using measured flight parameters and subsequent fatigue analysis to calculate the life expended on the life-limited components. To assess the potential benefit of usage monitoring, the two usage techniques were compared to current methods of component retirement. In addition, comparisons were made with direct load measurements to assess the accuracy of the two techniques. The data that was used for the evaluation of the usage monitoring techniques was collected under an independent HUMS Flight trial program, using a commercially available HUMS and data recording system. The usage data collect from the HUMS trial aircraft was analyzed off-line using PC-based software that included the FCR and FLS techniques. In the future, if the technique prove feasible, usage monitoring would be incorporated into the onboard HUMS. |
| File Size | 2732307 |
| Page Count | 72 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960015862 |
| Archival Resource Key | ark:/13960/t5hb42c9w |
| Language | English |
| Publisher Date | 1996-02-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Service Life Fatigue Life Component Reliability Flight Conditions Data Acquisition Systems Health Monitoring Helicopter Propeller Drive Data Recording Feasibility Analysis Data Processing Rotating Shafts Aircraft Maintenance Operating Costs Fatigue Materials In-flight Monitoring Aircraft Reliability Vibration Effects Engine Monitoring Instruments Applications Programs Computers Helicopter Performance Prediction Analysis Techniques Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
