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On the track of practical forward-swept wingsStructural laminates which comprise wing-cover skins for forward swept winged aircraft are examined. The laminates are themselves composed of lamina arranged in a symmetrical and unbalanced fashion. The fibers are oriented so that no fiber has a counterpart in the same ply which is at an exact anti-angle to itself. The laminate orientation creates a wash-out in a forward swept wing and alleviates aeroelastic loading. Further discussion is devoted to center-of-pressure movement, flutter behavior, aeroelasticity and aeroelastic divergence, and wind tunnel testing of aerodynamically tailored wings. It is found that rotating the laminate to increase the divergence dynamic pressure decreases strain under aerodynamic loading. Flight tests with three models are reported, and it is concluded that divergence can be avoided by the use of an efficient composite structure.
Document ID
19820035536
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hertz, T. J.
(Air Force Wright Aeronautical Labs. Wright-Patterson AFB, OH, United States)
Shirk, M. H.
(USAF, Wright Aeronautical Laboratories, Wright-Patterson AFB OH, United States)
Ricketts, R. H.
(NASA Langley Research Center Hampton, VA, United States)
Weisshaar, T. A.
(Purdue University West Lafayette, IN, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Publication Information
Publication: Astronautics and Aeronautics
Volume: 20
Subject Category
Aircraft Design, Testing And Performance
Accession Number
82A19071
Distribution Limits
Public
Copyright
Other

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