NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Integrated aerodynamic-structural-control wing designThe aerodynamic-structural-control design of a forward-swept composite wing for a high subsonic transport aircraft is considered. The structural analysis is based on a finite-element method. The aerodynamic calculations are based on a vortex-lattice method, and the control calculations are based on an output feedback control. The wing is designed for minimum weight subject to structural, performance/aerodynamic and control constraints. Efficient methods are used to calculate the control-deflection and control-effectiveness sensitivities which appear as second-order derivatives in the control constraint equations. To suppress the aeroelastic divergence of the forward-swept wing, and to reduce the gross weight of the design aircraft, two separate cases are studied: (1) combined application of aeroelastic tailoring and active controls; and (2) aeroelastic tailoring alone. The results of this study indicated that, for this particular example, aeroelastic tailoring is sufficient for suppressing the aeroelastic divergence, and the use of active controls was not necessary.
Document ID
19930036310
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rais-Rohani, M.
(Mississippi State Univ. Mississippi, United States)
Haftka, R. T.
(NASA Langley Research Center Hampton, VA, United States)
Grossman, B.
(NASA Langley Research Center Hampton, VA, United States)
Unger, E. R.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: AIAA(USAF)NASA/OAI Symposium on Multidisciplinary Analysis and Optimization, 4th, Cleveland, OH, Sept. 21-23, 1992, Technical Papers. Pt. 1 (A93-20301 06-66)
Publisher: American Institute of Aeronautics and Astronautics
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 92-4694
Accession Number
93A20307
Funding Number(s)
CONTRACT_GRANT: NAG1-224
CONTRACT_GRANT: NSF DMC-86-15336
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available