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Aerospace Engineering
Gust Load Factor & Wing Bending Explained
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[QUOTE="jrmichler, post: 6831102, member: 638574"] From FAR (Federal Air Regulation) 23.333(c)(1)(i): [I]Positive (up) and negative (down) gusts of 50 f.p.s. at V C must be considered at altitudes...[/I] This assumes that the airplane is in straight and level flight, and right side up (no aerobatics). A positive gust pushes the airplane up. The wing tips bend upward when this happens. There is a famous photo on the internet showing a static test of the Boeing 787 wing simulating a positive load factor: [ATTACH type="full"]318694[/ATTACH] The wings bend up under positive loads. Counterintuitively, the horizontal tail bends in the opposite direction in order to get positive pitch stability. [/QUOTE]
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Gust Load Factor & Wing Bending Explained
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