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So, apparently there was some discussion from the engineers on whether to bend stress test the wings for the Dreamliner to the point of failure. Then someone did that calculation and discovered that they could likely bend the wings upwards to the point where they touched.

I am not sure if they still plan on doing the exercise...

I specially liked the idea of some projects as "mind-stretchers": the sonic cruiser may have never been, as a product, more than a drawing.
But, as an idea, made possible a brand new way of thinking airplanes. "Once your mind it's been stretched, it's hard for the mind to contract again" Great quote.

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