Mode/ deformation measurement

Y. LE SANT

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Mode/ deformation measurement

机译：模式/变形测量

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Any traveler taking the plane can notice that the wings deform in flight, sometimes impressively! The same is true of the models tested in ONERA's large wind tunnels. These deformations were long consi-dered to have no notable effect, and it was only quite recently that it appeared indispensable to measure model deformations, or else invalidate the test. That is, wing twist is generally several tenths of a degree and can beas much as 2°forthe most heavily loaded configurations. This should be compared with the commonly allowed tolerance, which is 0.1°!

机译：任何乘飞机的旅客都会注意到机翼在飞行中变形，有时会令人印象深刻！在ONERA的大型风洞中测试的模型也是如此。长期以来，人们一直认为这些变形没有明显的作用，直到最近才开始测量模型变形或使测试无效。也就是说，机翼扭曲通常为十分之一度，对于最重的负载配置，其扭曲可能高达2°。应该将其与通常允许的公差（0.1°）进行比较！

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《ONERA Scientific and Technical Activities》 |2006年第2006期|p.22|共1页
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Y. LE SANT;
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Mode/ deformation measurement

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