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2015 | 2 | 1 |
Tytuł artykułu

Redesigning of a Canard Control Surface of an Advanced Fighter Aircraft: Effect on Buckling and Aerodynamic Behavior

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A redesign of canard control-surface of an advanced all-metallic fighter aircraft was carried out by using carbon fibre composite (CFC) for ribs and panels. In this study ply-orientations of CFC structure are optimized using a Genetic-Algorithm (GA) with an objective function to have minimum failure index (FI) according to Tsai-Wu failure criterion. The redesigned CFC structure was sufficiently strong to withstand aerodynamic loads from stress and deflection points of view. Now, in the present work CFC canard structure has been studied for its buckling strength in comparison to existing metallic design. In this study, the existing metallic design was found to be weak in buckling. Upon a detailed investigation, it was revealed that there are reported failures in the vicinity of zones where initial buckling modes are excited as predicted by the finite element based buckling analysis. In view of buckling failures, the redesigned CFC structure is sufficiently reinforced with stringers at specific locations. After providing reinforcements against buckling, the twist and the camber variations of the airfoil are checked and compared with existing structure data. Finally, the modal analysis has been carried out to compare the variation in excitation frequency due to material change. The CFC structure thus redesigned is safe from buckling and aerodynamic aspects as well.
Słowa kluczowe
Wydawca
Rocznik
Tom
2
Numer
1
Opis fizyczny
Daty
wydano
2015-01-01
otrzymano
2014-07-16
zaakceptowano
2015-01-16
online
2015-03-25
Twórcy
  • Department of Aerospace Engineering, Indian Institute of Technology Kanpur, UP, India 208016
autor
  • Department of Aerospace Engineering, Indian Institute of Technology Kanpur, UP, India 208016, Tel: +91-512-2596024, Fax: +91-512-2597626, mohite@iitk.ac.in
Bibliografia
  • [1] Shrivastava S., Mohite P.M., Design and optimization of a composite canard control surface of an advanced fighter aircraft under static loading, Curved Layer. Struct., 2015, 2, 91-105.
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.doi-10_1515_cls-2015-0010
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