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Identification of unsteady aerodynamics and aeroelastic integro-differential systemsThe problem of estimating integro-differential models based on test or simulation data is dealt with. The identification techniques proposed for estimating parameters in models described by differential equations need to be considerably extended to deal with the integral terms. Conditions under which the integral terms may be approximated by algebraic values are discussed. The integro-differential models discussed are related to indicial models proposed by aerodynamicists to describe unsteady flow.
Document ID
19850024538
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Gupta, N. K. (Integrated Systems, Inc., Palo Alto Calif., United States)
Iliff, K. W. (NASA Hugh L. Dryden Flight Research Center Edwards, CA, United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1985
Subject Category
Systems Analysis
Report/Patent Number
NAS 1.15:86749
H-1313
NASA-TM-86749
Accession Number
85N32851
Funding Number(s)
PROJECT: RTOP 505-43-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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