Design and Implementation of Digital Filters for Analysis of F/A-18 Flight Test Data
Abstract
This technical memorandum describes the methods and computer programs used to specify, design, and implement time-domain and frequency-domain FIR digital filters for use in the analysis of F/A-18 flight test data. Two bandpass filters covering the 10-20 Hz and 32-52 Hz frequency bands have been developed, and they can be used for analyzing the two dominant modes of structural vibration response occurring on the F/A-18 empennage. A highpass filter with a cutoff frequency of 8 Hz was also designed for filtering strain gauge data for use in producing fatigue load sequences for coupon testing. The effects of bandpass filtering on the transient response of short-term vibrations lasting about one second have also been investigated, leading to the conclusion that FIR digital filters have a negligible effect on the transient response characteristics of short bursts of vibration. F/A- 18 aircraft, Buffeting, Digital filters, Signal processing, Vibration analysis.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1992
- Accession Number
- ADA253447
Entities
People
- W. Waldman