sr-71 spy planemashleymorgan / FlickrThe SR-71 Blackbird.
The world's fastest manned planes are nothing short of engineering marvels.
Capable of flitting through the air at multiple times the speed of sound, these planes take pilot and aircraft to the fringe of science-fiction.
Although a number of these aircraft have since been retired from use, they continue to be the fastest manned aircraft in history.
The designs and advances achieved with these planes have also left an immense impact upon the development of the planes that succeeded them.
Here's a look at the world's nine fastest manned aircraft ever flown.

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