NDLI: Global nonlinear parametric modelling with application to F-16 aerodynamics

Content Provider	IEEE Xplore Digital Library
Author	Morelli, E.A.
Copyright Year	1998
Description	Author affiliation: NASA Langley Res. Center, Hampton, VA, USA (Morelli, E.A.)
Abstract	Global nonlinear parameteric modeling technique is described and demonstrated. The technique uses multivariate orthogonal modeling functions generated from the data to determine nonlinear model structure, then expands each retained modeling function into an ordinary multivariate polynomial. The final model form is a finite multivariate power series expansion for the dependent variable in terms of the independent variables. Partial derivatives of the identified models can be used to assemble globally valid linear parameter varying models. The technique is demonstrated by identifying global nonlinear parametric models for nondimensional aerodynamic force and moment coefficients from a subsonic wind tunnel database for the F-16 fighter aircraft. Results show less than 10% difference between wind tunnel aerodynamic data and the nonlinear parameterized model for a simulated doublet maneuver at moderate angle of attack. Analysis indicated that the global nonlinear parametric models adequately captured the multivariate nonlinear aerodynamic functional dependence.
Starting Page	997
Ending Page	1001
File Size	459984
Page Count	5
File Format	PDF
ISBN	0780345304
ISSN	07431619
DOI	10.1109/ACC.1998.703559
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-06-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Parametric statistics Aerodynamics Predictive models Polynomials Databases Analytical models NASA Assembly Military aircraft Elevators
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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