A first-of-its-kind test facility unveiled earlier this month at the University of Notre Dame could improve the Pentagon's hypersonic research.

Faster than a speeding bullet' is something we've all probably heard before. But does it ring true even when compared against ...

The Race for Supersonic and Hypersonic FlightMorris Plains, New Jersey--(Newsfile Corp. - April 10, 2025) - The Speed ...

But the X-43 went one better: It produced thrust greater than drag in 2004, reaching a speed on a third test flight of about 7,000 mph at 110,000 feet—almost Mach 10—for 11 seconds.

Since an aircraft can’t reach those speeds with a propeller, it follows that a wind tunnel cannot be driven by propellers, fans, or any such device, and exceed Mach 1 wind speed, either.