Stress Analysis of Ailerons-control bracket attachment to front-spar in SARAS composite wing

Kumari, Asha and Kotresh, Gaddikeri M and Byji, Varughese (2010) Stress Analysis of Ailerons-control bracket attachment to front-spar in SARAS composite wing. Project Report. NAL, Bangalore.

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Abstract

This report presents the FE stress analysis of Aileron-control bracket attachment to front-spar in SARAS composite wing. The wing is having eight aileron control brackets attached to fiont-spar between sta#4 to sta#21. During the actuation of the aileron. the force is transferred to the bracket by metallic tubes which are connected trough bracket. These forces are reacted by the front-spar and front-spar gussets to which the brackets are attached through fasteners. Each bracket should be able to transfer the actuator load efficiently and it is necessary to ensure the strength and stiffness of the surrounding parts for the smooth operation of the aileron. Brackets and attachment are modeled in detail and the brackets are integrated with global wing model. FE stress analysis is carried out for all three design ultimate load conditions. Failure-index of composite part is extracted on the basis of Yamada-Sun failure criteria. It is found that failure-index of front-spar which is connected with aileron-bracket to front-spar and front-spar gusset, the fastner forces are also extracted. Margin of safety for shear-strenth of fasteners and bearing-stress of CFC and metal connections are also positive.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aileron;Bracket;Fasteners;Failure-index;Static Analysis
Subjects: AERONAUTICS > Aerodynamics
AERONAUTICS > Aircraft Design, Testing & Performance
Division/Department: Advanced Composites Division, Advanced Composites Division, Advanced Composites Division
Depositing User: Mr Nisanth
Date Deposited: 30 Jul 2010 16:11
Last Modified: 30 Jul 2010 16:11
URI: http://nal-ir.nal.res.in/id/eprint/8870

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