In aerodynamics, a hypersonic speed is one that exceeds five times the speed of sound, often stated as starting at speeds of Mach 5 and above. [1]

2023年9月27日 · Hypersonic speed is five times the speed of sound. Scientists measure speeds this fast with a Mach number, named for Austrian physicist Ernst Mach. Sound has a speed of Mach 1 and anything Mach 5 or above is considered hypersonic.

2017年9月28日 · If you have a need for speed, the next frontier is hypersonic. The United States is currently developing hypersonic missiles that travel in excess of 6,000 miles per hour. The hypersonic...

In aerodynamics, hypersonic speeds are speeds that are significantly faster than the speed of sound. Any speed faster than Mach 5 (five times faster than the speed of sound; 1,715 m/s at sea level) is said to be hypersonic.

Hypersonic flight is flight through the atmosphere below altitudes of about 90 km (56 mi) at speeds greater than Mach 5, a speed where dissociation of air begins to become significant and high heat loads exist.

2024年1月5日 · NASA made aviation history with the first and second successful flights of a scramjet-powered airplane at hypersonic speeds – speeds greater than Mach 5 or five times the speed of sound.

2023年10月19日 · The criticality of a moving body’s interaction with its immediate atmosphere increases with its speed. At hypersonic speeds, the air molecules split into two or more parts in what is known as molecular dissipation. This generates tremendous thermo-mechanical loads, capable of shredding even the strongest steels. Hypersonic flight also impacts ...

2021年5月7日 · At low hypersonic speeds, the molecular bonds vibrate, which changes the magnitude of the forces generated by the air on the aircraft. At higher hypersonic speeds, the molecules break apart producing an electrically charged plasma around the aircraft.

2024年10月7日 · Hypersonic speed, defined as flight velocities exceeding Mach 5, allows for rapid global travel and strategic military advantages. In military applications, hypersonic aircraft can significantly reduce response times for reconnaissance missions and strategic strikes.

2024年6月21日 · Vehicles that travel at hypersonic speeds fly faster than five times the speed of sound. NASA studies the fundamental science of hypersonics to understand it better and applies this understanding to enable point-to-point and space access hypersonic vehicles.