Which is the world's 1st hypersonic aircraft?

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since 1970s, term hypersonic has been assumed refer speeds of mach 5 (5 times speed of sound) , above. hypersonic regime subset of supersonic regime.

precise mach number @ craft can said hypersonic elusive, since physical changes in airflow occur @ quite different speeds, depending on pressure gradients , density air pressure. generally, combination of effects become important "as whole" around mach 5.

north american x-15 , other rocket-powered spacecraft examples of hypersonic aircraft. in aeronautical engineering, considered x-15 first hypersonic aircraft.
holds official world record fastest speed ever reached manned aircraft.
official maximum speed mach 6.72 (4,520 mph / 7,274 km/h).

has service ceiling of 67 mi (354,330 ft / 108 km) incredible rate of climb in excess of 60,000 ft/min (18,288 m/min), outstanding performance first hypersonic aircraft!

i giving seminar on topic "stability , control of hypersonic airplanes". please tell me successful aircraft's name,not fictional..also plz suggest book in reference topic. thanks.


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