23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-R28

A METHOD TO DERIVE THE USAGE OF HYDRAULIC ACTUATORS FROM FLIGHT DATA

H. Kannemans, H. W. Jentink
NLR, Netherlands

Keywords: prognostics and health management, remaining life time, hydraulic actuator

The quantification and prediction of the health status of aircraft are challenging aspects of Prognostics and Health Management (PHM). The Dutch PHM Consortium (DPC 1 ) develops concepts for prognostics and health management of aircraft. Within this framework there is a need to know the operation of the hydraulic system in flight. Usage data can be derived from data measured with dedicated sensors, but to keep aircraft weight, sensor failures and costs as low as possible there is a requirement to minimise the number of such sensors. Therefore a technique is developed to derive information about the operation of the hydraulic system from parameters measured during the flight for general purposes, the recorded flight data. The technique and some results for the RNLAF (Royal Netherlands Air Force) F-16 are presented.

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