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A worst-case approach for on-line flutter prediction
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lind, Rick C. Brenner, Martin J. |
| Copyright Year | 1998 |
| Description | Worst-case flutter margins may be computed for a linear model with respect to a set of uncertainty operators using the structured singular value. This paper considers an on-line implementation to compute these robust margins in a flight test program. Uncertainty descriptions are updated at test points to account for unmodeled time-varying dynamics of the airplane by ensuring the robust model is not invalidated by measured flight data. Robust margins computed with respect to this uncertainty remain conservative to the changing dynamics throughout the flight. A simulation clearly demonstrates this method can improve the efficiency of flight testing by accurately predicting the flutter margin to improve safety while reducing the necessary flight time. |
| File Size | 715209 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980017615 |
| Archival Resource Key | ark:/13960/t01023q3z |
| Language | English |
| Publisher Date | 1998-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Dynamic Structural Analysis Flight Tests Stability Variations On-line Systems Flutter Flutter Analysis Safety Aeroelasticity 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 |
