A jet engine is any engine that can propel an aircraft of some kind via rearward expulsion of a jet of fluid, typically a hot exhaust gas that the engine generates by drawing in fuel from the ...

With handful of start-ups on board from Hermeus to Venus Aerospace, hypersonic commercial flights could soon become a reality ...

Thrust: The turbojet delivers sufficient thrust from takeoff to approximately Mach 3, after which the ramjet takes over. Hermeus employs a controlled dive to accelerate the aircraft to Mach 4, ...

Thrust: The turbojet delivers sufficient thrust from takeoff to approximately Mach 3, after which the ramjet takes over. Hermeus employs a controlled dive to accelerate the aircraft to Mach 4, ...