Aerodynamics

Hypersonic vehicles move fast—faster than five times the speed of sound, or Mach 5. Being able to pinpoint whether the air is laminar (moving in a smooth, straight line) or has transitioned to turbulent (swirling in eddies, with up to eight times the heat transfer) is critical for determining what materials to use when designing hypersonic aircraft and missiles.

The leading edges of hypersonics vehicles—as well as fins, control surfaces, and apertures—need to be protected against speeds exceeding Mach 5, temperatures well above 1,000 degrees Celsius, oxidation from the atmosphere, and tremendous aerodynamic shear loads. Custom materials can enable mission success in these extreme environments.