The objective of this study was to perform a data-driven assessment of various aspects of the helicopter structural usage monitoring process and to identify key issues and requirements that must be addressed prior to using the monitoring information for part life extensions or maintenance credits. Structural usage monitoring is defined in this report to be the identification of the aircraft usage spectrum flight regimes for any given instant in the aircraft or component life. With this aircraft maneuver, or regime information, the fatigue damage accumulation on helicopter components can be tracked. The ultimate goal of a structural monitoring system is to produce more insight into exactly how an aircraft is being used once it is fielded. This information can be compared to design assumptions and then part life extensions (or reductions) can potentially be granted. During this study, several structural monitoring system design issues are addressed, including the types of aircraft parameters to be monitored, the data rates at which those parameters should be monitored, as well as a recommended algorithm development and validation approach. The results of this report set the recommended basic design criteria for developing a reliable regime recognition software module for commercial as well as military rotorcraft.
Assessment of Helicopter Structural Usage Monitoring System Requirements
2004
34 pages
Report
Keine Angabe
Englisch
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