What is the thickest airfoil ever used in an aeroplane wing for lift ?

Sraight'nlevel

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Nov 4, 2021
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I am curious...I recall B-29 had 28% thick airfoil in the root of the wing.

Could 50% thick be possible...would it bring anything...like weight savings ?

I am referring to the good old "tear drop" shape...which is supposed to be the slickest ever.
 
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