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. Speeds over Mach 25 have been …

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.

2023年1月25日 · Aviation company Hermeus successfully demonstrated mode transition between turbojet and ramjet engines for the Air Force’s Quarterhorse hypersonic aircraft, a major hypersonic flight milestone.

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]

Texas-based Venus Aerospace is working with rotating-detonation propulsion technology to turn the "Stargazer" from sci-concept to Mach-9 business jet that flies at 6,900 mph.

2024年10月7日 · Venus Aerospace unveiled an engine it says is capable of flying six times the speed of sound, and could get from London to New York in an hour.

2023年5月1日 · Venus Aerospace's rotating-detonation propulsion technology turns the "Stargazer" from sci-concept to Mach-9 business jet that flies at 6,900 mph.

The NASA X-43 was an experimental unmanned hypersonic aircraft with multiple planned scale variations meant to test various aspects of hypersonic flight. It was part of the X-plane series and specifically of NASA 's Hyper-X program developed in the late 1990s. [ 1 ]

2014年2月28日 · In the joint X-15 hypersonic research program that NASA conducted with the U.S. Air Force, the Navy, and North American Aviation Inc., the aircraft flew during a period of nearly 10 years and set the world’s unofficial speed and altitude records of 4,520 mph (Mach 6.7) and 354,200 feet in a program to investigate all aspects of piloted ...