TY - GEN
T1 - Advanced composite wings for whirl flutter augmentation
T2 - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015
AU - Zhang, Jianhua
AU - Smith, Edward C.
N1 - Publisher Copyright:
© 2015, American Institute of Aeronautics and Astronautics Inc. All rights reserved.
PY - 2015
Y1 - 2015
N2 - A new wing composite box beam has been designed based on the WRAST model. The newly designed wing has detailed structural properties, and is used to evaluate the effectiveness of wing extensions and winglets to improve tiltrotor whirl flutter stability. The frequencies and damping characteristics of the new wing are analyzed, and they are comparable to the WRAST wing model. Sizing of wing extension and winglet beam structures has also been conducted. The simulation results have confirmed the effectiveness of wing extension and winglet. They can significantly improve the wing beam bending and torsion mode damping, and the current designs of wing, wing extension and winglet structures are suitable to be used in wind tunnel for prove of concept tests. Structural tailoring of wing extension box beam has also been conducted, and both beam bending stiffness tuning and beam bending-torsion coupling through composite tailoring of wing extension box beam have been found to be able to increase the wing beam mode flutter speed by 35-40 knots.
AB - A new wing composite box beam has been designed based on the WRAST model. The newly designed wing has detailed structural properties, and is used to evaluate the effectiveness of wing extensions and winglets to improve tiltrotor whirl flutter stability. The frequencies and damping characteristics of the new wing are analyzed, and they are comparable to the WRAST wing model. Sizing of wing extension and winglet beam structures has also been conducted. The simulation results have confirmed the effectiveness of wing extension and winglet. They can significantly improve the wing beam bending and torsion mode damping, and the current designs of wing, wing extension and winglet structures are suitable to be used in wind tunnel for prove of concept tests. Structural tailoring of wing extension box beam has also been conducted, and both beam bending stiffness tuning and beam bending-torsion coupling through composite tailoring of wing extension box beam have been found to be able to increase the wing beam mode flutter speed by 35-40 knots.
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U2 - 10.2514/6.2015-1414
DO - 10.2514/6.2015-1414
M3 - Conference contribution
AN - SCOPUS:85088742308
T3 - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
BT - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
PB - American Institute of Aeronautics and Astronautics Inc.
Y2 - 5 January 2015 through 9 January 2015
ER -