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#21
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Plane wings
"Stubby" wrote in message ... I'm not familiar with that plane, but why did you exceed its ratings? 14 Gs is a lot and I'm not surprised there were some loose rivits but I am surprised you survived without damage to your body! I think the 150% is the limit where the structure will return to the original form. Beyond that and deformation occurs. Sounds like the Banshee can take a brief 14 g load and deform, but still stay together. Glad you made it through Big John! |
#22
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Plane wings
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#23
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Plane wings
".Blueskies." wrote
I think the 150% is the limit where the structure will return to the original form. Beyond that and deformation occurs. Nope...100% is the 'Limit Load', 150% is the 'Ultimate Load'. Below the Limit Load, no permanent deformation or breakage will occur. Between the Limit Load and Ultimate Load, permanent deformation may occur, but no breakage. Above the Ultimate Load, the structure may break. Bob Moore |
#24
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Plane wings
"Bob Moore" wrote in message 22... ".Blueskies." wrote I think the 150% is the limit where the structure will return to the original form. Beyond that and deformation occurs. Nope...100% is the 'Limit Load', 150% is the 'Ultimate Load'. Below the Limit Load, no permanent deformation or breakage will occur. Between the Limit Load and Ultimate Load, permanent deformation may occur, but no breakage. Above the Ultimate Load, the structure may break. Bob Moore Thanks! |
#25
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Plane wings
Vic7 wrote:
Not a lie that they perform this test, although as previously pointed out, the spar fails long before the wing-tips meet. I remember seeing a PBS/History/Discover channel program about the initial production of the B777. They had impressive footage of the destructive load testing of the wings. IIRC they failed at a 40-something degree deflection. I saw that footage too, it was amazing to watch. They were simultaneously pulling both wingtips upwards with the rest of the fuselage anchored to the floor. The tips were being pulled pretty slowly, perhaps a centimeter or two per second, the motion was barely visible. The hangar was very quiet as the wings bent more and more, then all of a sudden, the wings snapped very violently and suddenly. Amazing to see. Kevin. |
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