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An aircraft wing spar made of aluminum alloy has an I-beam cross-section and is subjected to a bending moment due to aerodynamic lift. Given the spanwise bending moment distribution, how would you determine the maximum bending stress in the spar? Also, explain how material fatigue considerations affect the design.
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Post Graduate Engineering Trainee PGET

Interviewed at Pratt & Whitney

3.7
Apr 16, 2025

An aircraft wing spar made of aluminum alloy has an I-beam cross-section and is subjected to a bending moment due to aerodynamic lift. Given the spanwise bending moment distribution, how would you determine the maximum bending stress in the spar? Also, explain how material fatigue considerations affect the design.

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