The Chinese firm’s supersonic drone is claimed to be capable of reaching Mach 4.2 at an altitude of 12.4 ... to develop a high-speed passenger jet, projected for prototype testing by 2030.

NASA’s Quesst Mission aims to develop a new supersonic jet that produces quiet sonic booms, allowing for faster-than-sound ...

The superfast aircraft, dubbed "Monkey King", aims to reach a top speed of Mach 4 - twice the speed of sound ... latest advanced supersonic fighter jet capable of dropping devastating weapons ...

which simulates high-Mach flight conditions in altitudes of over 40km (25 miles), researchers from the Chinese Academy of Sciences (CAS) achieved sustained oblique detonation waves using RP-3 jet ...