Hypersonic: more super than supersonic  MAY 27 2010

The US Air Force, Pratt & Whitney, and Boeing are jointly developing a hypersonic aircraft that can travel faster than existing cruise missiles. It's powered by a crazy-sounding "air-breathing hypersonic engine that has virtually no moving parts" and reached a speed of 3500 mph in a recent test.

"This is truly transformational technology," Brink said. "This engine can be considered the next step in aviation. It's as big of leap as it was when we went from propellers to jet engines."

You can read more about scramjet engines on Wikipedia. (via @bldgblog)

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