Accession Number N20120014567
Title Aircraft Dynamic Modeling in Turbulence.
Publication Date Aug 2012
Media Count 22p
Personal Author E. A. Morelli K. Cunninham
Abstract 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.
Keywords 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


 
Source Agency National Aeronautics and Space Administration
NTIS Subject Category 51C - Aircraft
85A - Air Transportation
Corporate Author National Aeronautics and Space Administration, Hampton, VA. Langley Research Center.
Document Type Conference proceedings
Title Note N/A
NTIS Issue Number 1308
Contract Number N/A

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