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Accession Number
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N20120014567
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Title
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Aircraft Dynamic Modeling in Turbulence.
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Publication Date
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Aug 2012
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Media Count
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22p
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Personal Author
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E. A. Morelli K. Cunninham
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Abstract
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A method for accurately identifying aircraft dynamic models in turbulence was developed and demonstrated. The method uses orthogonal optimized multisine excitation inputs and an analytic method for enhancing signal-to-noise ratio for dynamic modeling in turbulence. A turbulence metric was developed to accurately characterize the turbulence level using flight measurements. The modeling technique was demonstrated in simulation, then applied to a subscale twin-engine jet transport aircraft in flight. Comparisons of modeling results obtained in turbulent air to results obtained in smooth air were used to demonstrate the effectiveness of the approach.
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Keywords
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Aircraft models
Atmospheric turbulence
Dynamic models
Flight simulation
Flight tests
Frequency domain analysis
In-flight monitoring
Kalman filters
Monte carlo method
Orthogonality
Signal to noise ratios
T-2 aircraft
Wind tunnel tests
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Source Agency
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National Aeronautics and Space Administration
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NTIS Subject Category
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51C - Aircraft
85A - Air Transportation
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Corporate Author
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National Aeronautics and Space Administration, Hampton, VA. Langley Research Center.
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Document Type
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Conference proceedings
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Title Note
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N/A
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NTIS Issue Number
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1308
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Contract Number
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N/A
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