Test1_10 Sol

# Test1_10 Sol - CLARKSON UNIVERSITY Department of Mechanical...

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CLARKSON UNIVERSITY Department of Mechanical and Aeronautical Engineering AE/ME 350 Aircraft Structural Analysis (Fall 2010) Test #1 Solution 1. Imagine that you are responsible for structural design of a supersonic transport airplane. What are the five most important structural design requirements (criteria) that you must satisfy? (5) Light weight High strength High stiffness High resistance to buckling Long fatigue life (Cost is a very important overall design goal, but the above are specific to structural design) 2. Aircraft wing comprises different types of structural elements designed to carry specific loads. Give one example for each of these structural elements: axial member, shear panel, bending member, and torsion element. (5) Axial – stringer Shear – skin Bending – spar (spar cap) Torsion – wing box 3. Consider a constant shear flow q on a closed thin-walled section of arbitrary shape as shown in Fig. 1. Show that the resultant torque 2 T A q , where A = Area enclosed by the shear flow.

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