An issue with SR-71 materials and fuel: it leaked fuel (by design) when on the ground, because the panels needed room for expansion when they heated up during f

An issue with SR-71 materials and fuel: it leaked fuel (by design) when on the ground, because the panels needed room for expansion when they heated up during flight. https://theaviationgeekclub.com/heres-why-the-sr-71-blackbird-airframe-was-designed-to-leak-fuel/ https://theaviationgeekclub.com/heres-why-the-sr-71-blackbir...