Input Excitation Techniques for Aerodynamics Derivatives Estimation of Highly Augmented Fighter Aircraft

Shantha Kumar, N (1999) Input Excitation Techniques for Aerodynamics Derivatives Estimation of Highly Augmented Fighter Aircraft. Defence Science journal. pp. 187-196. ISSN 0011-748X

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Abstract

This paper presents the results of an investigation related to the estimation of lateral -directional aerodynamics derivatives of highly augmented and advanced fighter aircraft from the flight like response data. Different types of pilot inputs are used to generate aircraft response data in the engineer-in-loop flight simulator to determine which input excitation might provide the most accurate estimates of aircraft stability and control derivatives. Also MATLAB/SIMLINK - based simulation platform is used to generate aircraft response with single surface excitation to evaluate the usefulness of the method for stability and control derivatives estimation. The maximum likelihood estimation based on output error minimization technique, is used to estimate the derivatives from aircraft aircraft simulation response data. The results indicate that accuracy of the estimated derivatives improve with persistence excitation and single-surface excitation.

Item Type:	Article
Subjects:	AERONAUTICS > Aircraft Stability and Control
Depositing User:	Mr. Shantha Kumar N
Date Deposited:	30 Jun 2010 07:39
Last Modified:	30 Jun 2010 07:39
URI:	http://nal-ir.nal.res.in/id/eprint/8481

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