X-43A Goes Hypersonic - Universe Today
A NASA X-43A prototype scramjet aircraft performed a successful test on Saturday, reaching a top speed of Mach 7. The X-43A was mounted to the front of a Pegasus rocket which was dropped from a B-52 bomber. The rocket carried it to an altitude of 29,000 metres and then the X-43A fired its scramjet for 10 seconds, extinguishing its hydrogen fuel supply. It flew for a few more minutes to record aerodynamic data. Another test flight is scheduled for later this year.
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