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Analysis of flexible aircraft longitudinal dynamics and handling qualities. Volume 2: DataTwo analysis methods are applied to a family of flexible aircraft in order to investigate how and when structural (especially dynamic aeroelastic) effects affect the dynamic characteristics of aircraft. The first type of analysis is an open loop modal analysis technique. This method considers the effect of modal residue magnitudes on determining vehicle handling qualities. The second method is a pilot in the loop analysis procedure that considers several closed loop system characteristics. Both analyses indicated that dynamic aeroelastic effects caused a degradation in vehicle tracking performance, based on the evaluation of some simulation results. Volume 2 consists of the presentation of the state variable models of the flexible aircraft configurations used in the analysis applications mode shape plots for the structural modes, numerical results from the modal analysis frequency response plots from the pilot in the loop analysis and a listing of the modal analysis computer program.
Document ID
19850026890
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Waszak, M. R.
(Purdue Univ. West Lafayette, IN, United States)
Schmidt, D. K.
(Purdue Univ. West Lafayette, IN, United States)
Date Acquired
September 5, 2013
Publication Date
June 1, 1985
Subject Category
Aircraft Stability And Control
Report/Patent Number
NASA-CR-177943-VOL-2
NAS 1.26:177943-VOL-2
Report Number: NASA-CR-177943-VOL-2
Report Number: NAS 1.26:177943-VOL-2
Accession Number
85N35203
Funding Number(s)
CONTRACT_GRANT: NAG1-254
PROJECT: RTOP 505-34-03-03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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