Development of a damage tolerant truss based composite empennage box

Thulasi Durai, D and Viswamurthy , SR and Vinoth, M and Balasubramaniam, - and Mohan, Kumar M and Dayananda, GN (2011) Development of a damage tolerant truss based composite empennage box. In: Proceedings of XII NASAS, 23-24, Sept 2011, IIT, Kanpur, India.

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Abstract

Truss structures are widely used for the support of structural loads in applications where minimum mass solutions are desired. Ideally these truss structure are made out of bars hinged at the ends to transfer axial forces and moments. Truss structures provide high stiffness and strength to weight ratio. In this study, this concept is considered towards the realization of a truss based empennage of an aircraft. A three dimensional composite truss box is designed to replace a conventional empennage interspar box without sacrificing stiffness and strength. Several co-cured truss elements were fabricated. Simple tests conducted on these truss elements indicate that one-to-one stiffness matching can be achieved between conventional and truss based structure. However, further design changes are needed to match their specific strength. Weight savings of about 15% is expected through the use of truss based design concepts.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Composite empennage box;Truss structures;Composite aircraft structural components
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Ms. Alphones Mary
Date Deposited: 28 May 2014 08:14
Last Modified: 28 May 2014 08:14
URI: http://nal-ir.nal.res.in/id/eprint/11973

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