Hypersonic materials and thermal management At Mach 10, Aerodynamics Becomes Materials Science

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Hypersonic flight is often discussed in terms of propulsion, speed and range. Yet beyond Mach 5, another engineering problem rapidly becomes dominant: surviving the thermal environment created by the flight itself. Sharp leading edges, air intakes and control surfaces can be exposed to temperatures above 2,000 °C, severe thermal gradients and intense mechanical loads. Modern hypersonic vehicles therefore depend increasingly on ceramic-matrix composites, ultra-high-temperature ceramics and even actively cooled structures. At Mach 10, the airframe is no longer merely carrying the propulsion system. It becomes one of the most critical technologies on the vehicle.

Hypersonic speed begins conventionally at Mach 5.