Answer to Question #151844 in Electrical Engineering for General

Question #151844
You are designing the windows of an aeroplane. Would you design them as squares, ovals or hexagons? Justify your answer
1
Expert's answer
2020-12-22T05:07:12-0500

At cyclic loads (and every flight of an airliner has a cyclic load), the fuselage of a sealed aircraft is slightly inflated by internal pressure at altitude and returns to its original dimensions upon landing. This leads to metal fatigue. At the same time, microcracks appeared in the places of riveting, and the corners of square portholes, as well as similar zones around hatches, served as places of stress concentration. Therefore, they are oval.


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