Development and Validation of a General Purpose Linearization Program for Rigid Aircraft Models

Duke, Eugene L. and Antoniewicz, Robert F. (1985) Development and Validation of a General Purpose Linearization Program for Rigid Aircraft Models. Technical Report NASA TM-86737, Research Engineering, NASA Dryden Flight Research Center.

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Abstract

This paper discusses a FORTRAN program that provides the user with a powerful and flexible tool for the linearization of aircraft models. The program LINEAR numerically determines a linear systems model using nonlinear equations of motion and a user-supplied, nonlinear aerodynamic model. The system model determined by LINEAR consists of matrices for both the state and observation equations. The program has been designed to allow easy selection and definition of the state, control, and observation variables to be used in a particular model. Also, included in the report is a comparison of linear and nonlinear models for a high-performance aircraft.

EPrint Type:	NASA Technical Memorandum
Keywords:	Aircraft models, Computer programs, Linear models, Linearization
Subjects:	Aircraft/Project: Nonaircraft-specific (01 - 09) Aeronautics: (08) Aircraft Stability And Control
ID Code:	582
Deposited On:	31 January 2006
Additional Information:	14 pages. Prepared as AIAA-85-1891 for presentation at AIAA Guidance, Navigation, and Control Conference, Snowmass, Colorado, August 19–21, 1985.