Boeing and Rolls-Royce Invest in Developing Revolutionary Hypersonic Engine
Reaction Engines (RE), a UK-based company, receives $37.4 million strategic investment “boost” from aerospace giants Boeing and Rolls-Royce to develop a novel class of engines combining jet and rocket technologies. Supersonic flight: An introduction Short definition: Supersonic flight is being able to fly faster than the speed of sound. For vehicles travelling in conditions of 68° Fahrenheit (20° Celsius) at sea level, this is about 768 mph, or 1,236 km/h. Supersonic speeds are also classified in terms of Mach numbers. The Mach number is the ratio of the speed of the vehicle to the speed of sound. So, a vehicle travelling at exactly the speed of sound is travelling at Mach 1. Mach numbers are also used to define various high speeds: Supersonic: Speed that is faster than Mach 1. Subsonic: Speed that is slower than Mach 1. Transonic: Speed that is between Mach 0.8-1.2 All modern passenger aircraft are subsonic and most modern fighter jets are supersonic. The only