Design Optimization of Airframe Structures
Publication: Journal of Aerospace Engineering
Volume 10, Issue 3
Abstract
A wing design optimization study is conducted to determine the effect of the configuration variable, sweep, on the minimum weight with strength and flutter constraints. In addition to sweep, the thicknesses of the plates are considered as variables in the optimization. The wing is subjected to two maneuver loads, a 6-g symmetric pull up and an antisymmetric roll condition combined with a 1-g steady flight. The multidisciplinary optimization systems, ASTROS, was used in the design study. The same system was used in calculating the static airloads. The study is divided into three categories. In category I the wing is optimized for the static loads with stress and size constraints. The optimum designs are then subject to a flutter analysis in category II. In category III the wing is optimized for the same loading conditions, but in addition to stress and size constraints a flutter constraint is imposed. The optimal designs are found to be relatively insensitive to wing sweep.
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References
1.
Bisplinghoff, R. L., Ashley, H., and Halfman, R. L. (1957). Aeroelasticity. Addison-Wesley Publishing Co., Mass.
2.
Bohlmann, J. D., Love, M. H., Barker, D. K., Rogers, W. A., and Paul, B. E. (1991). “Analytical and design tools for fighter wing aeroelastic tailoring.” Advisory Group for Aerosp. Res. and Devel., Bathe, England.
3.
Eschenauer, H. A., Schumacher, G., and Hartzheim, W.(1992). “Multidisciplinary design of composite aircraft structures by LAGRANGE.”J. Comp. and Struct., 44(4), 877–893.
4.
Johnson, E. H., and Neill, D. J. (1988). “Automated structural optimization system (ASTROS), volume III—applications manual.”AFWAL-TR-88-3028.
5.
Johnson, E. H., and Venkayya, V. B. (1988). “Automated structural optimization system (ASTROS), volume I—theoretical manual.”AFWAL-TR-88-3028.
6.
Lerner, E. (1985). “The application of practical optimization techniques in the preliminary structural design of a forward-swept wing.”Proc., 2nd Int. Symp. on Aeroelasticity and Struct. Dyn., Tech. Univ. of Aachen, Germany.
7.
Lerner, E., and Markowitz, J.(1979). “An efficient structural resizing procedure for meeting static aeroelastic design objectives.”AIAA J. Aircraft, 16(2), 65–71.
8.
Rogers, W. A., Braymen, W. W., Murphy, A. C., Graham, D. H., and Love, M. H. (1982). “Validation of aeroelastic tailoring by static, aeroelastic and flutter tests.”AFWAL-TR-81-3160.
9.
Stritz, A. G., Eastep, F. E., and Venkayya, V. B. (1991). “Influence of static and dynamic aeroelastic constraints on the optimal structural design of flight vehicle structures.”Proc., 32nd AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mat. Conf., 470–476.
10.
Tischler, V. A., and Venkayya, V. B. (1994). “Ply orientation as a variable in multidisciplinary optimization.”Proc., 4th Air Force/NASA/AIAA Conf. on Recent Adv. in Multidisciplinary Anal. and Optimization.
11.
Tzouong, G., Baker, M., Yalamanchili, K., and Giesing, J. (1994). “Aeroelastic loads and structural optimization of a high speed civil transport model.”AIAA94-4378, Proc., 5th AIAA/NASA/Air Force Symp. on Multidisciplinary Anal. and Optimization.
12.
Venkayya, V. B. (1992). “Structural optimization: local issues in global modeling.”Proc., Int. Symp. on Aerosp. Sci. and Engrg., Indian Inst. of Sci., Bangalore, India.
13.
Venkayya, V. B., and Tischler, V. A. (1979). “OPTSTAT—a computer program for the optimal design of structures subjected to static loads.”TM-FBR-79-67.
14.
Yurkovich, R. (1994). “The use of taguchi techniques with the ASTROS code for optimum wing structural design.”Proc., 35th AIAA SDM Conf.
Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 10 • Issue 3 • July 1997
Pages: 111 - 118
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jul 1, 1997
Published in print: Jul 1997
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