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SR-71 at no.4

The SR-71 Blackbird has set a world record for the fastest still standing speed record of 2,193.17 miles per hour and it is able to reach a max speed of 2,200 mph or Mach 3.5 to 3.7. Due to its fast flight, its body has been made of titanium, instead of the usual aluminum, for it to withstand heat that can go as high as 2,000 degrees Fahrenheit that impacts the wings and the fuselage.

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