Mach 3

Topic

Mach 3 represents a supersonic speed that is exactly three times the speed of sound. In fluid dynamics and aerospace engineering, it corresponds to a velocity of approximately 2,300 miles per hour (3,700 km/h) at sea level, varying depending on the surrounding atmospheric temperature. This speed threshold is commonly associated with high-performance military aircraft, such as the Lockheed SR-71 Blackbird.