HiFiRE 5B rocket reached Mach 7.5

Experimental rocket HiFiRE 5B was launched from the Woomera Test Range in South Australia, achieved the targeted speed of Mach 7.5 (seven and a half times the speed of sound, approximately 9200 km/h) and reached a height of 278 kilometres from Earth. Hypersonic International Flight Research Experimentation Program (HIFiRE) is investigating flight at more than Mach 5, the results will be applied to develop advanced air-breathing hypersonic propulsion engines known as supersonic combustion ramjets (scramjets)