Evaluation of Methods to Separate Maneuver and Gust Load Factors from Measured211 Acceleration Time Histories

摘要

The University of Dayton is supporting Federal Aviation Administration (FAA)211u001eresearch on the structural integrity requirements for the US commercial transport 211u001eairplane fleet. The primary objective of this research is to support the FAA 211u001eAirborne Data Monitoring Systems program by developing new and improved methods 211u001eand criteria for processing and presenting large commercial transport airplane 211u001eflight and ground loads usage data. The accelerations recorded in flight result 211u001efrom maneuver inputs initiated by the pilot and atmospheric turbulence. To 211u001edetermine the gust and maneuver load factor spectra from the recorded flight 211u001eloads data, it is necessary to separate the gust and maneuver load factors. 211u001eVarious means to separate the accelerations due to pilot maneuvers and turbulence 211u001efrom measured acceleration time histories have been used. This report presents 211u001ethe results of a study to evaluate the validity and operational processing 211u001eefficiency of three different methods for the separation of maneuvers and gusts 211u001efrom measured acceleration data obtained from Optical Quick Access Recorder 211u001e(OQAR)-equipped commercial aircraft. Conclusions and recommendations for the use 211u001eof a maneuver-gust separation method are also provided.