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Scramjet
A scramjet, short for supersonic combustion ramjet, is a type of jet engine designed to operate efficiently at extremely high, hypersonic speeds (above Mach 5). Unlike conventional jet engines, it doesn't have rotating compressor blades; instead, it uses the vehicle's forward motion to compress the incoming air before burning fuel within that supersonically flowing air.
TECHNICAL DEFINITION
A scramjet (supersonic combustion ramjet) is an advanced airbreathing jet engine that achieves propulsion for hypersonic flight by compressing atmospheric oxygen through high-speed forward motion, enabling supersonic combustion of fuel in the engine's combustor to generate thrust, critical for high Mach number missiles and re-entry vehicles.
BACKGROUND
A scramjet is a variant of a ramjet airbreathing jet engine in which combustion takes place in supersonic airflow. As in ramjets, a scramjet relies on high vehicle speed to compress the incoming air forcefully before combustion, but whereas a ramjet decelerates the air to subsonic velocities before combustion using shock cones, a scramjet has no shock cone and slows the airflow using shockwaves produced by its ignition source in place of a shock cone. This allows the scramjet to operate efficiently at extremely high speeds.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Supersonic combustion ramjet
- Hypersonic engine
- Airbreathing hypersonic engine
- Scram
USAGE NOTE
Scramjets are primarily researched and developed for advanced hypersonic weapons, reconnaissance aircraft, and potential future space launch systems due to their ability to achieve sustained high speeds within the atmosphere.
DEVELOPERS
Organizations developing technology related to Scramjet.
A global aerospace and defense company that has been a prime contractor for several scramjet development programs, notably the X-51 Waverider hypersonic flight test vehicle.
A leading global security and aerospace company actively involved in advanced hypersonic research and development, which includes propulsion systems like scramjets for future high-speed aircraft and missiles.
Through its Pratt & Whitney and Aerojet Rocketdyne divisions, RTX is a significant developer of advanced propulsion systems, including scramjet engines for high-speed military applications.
A major defense contractor that has participated in various hypersonic research initiatives, contributing to the development of scramjet technologies for future military platforms.
A U.S. government agency responsible for the development of emerging technologies for use by the military, which funds and manages numerous high-risk, high-reward programs related to hypersonic flight and scramjet propulsion.
While primarily civilian, NASA conducts fundamental research in aeronautics and space exploration, including hypersonic flight and scramjet propulsion, often in collaboration with military agencies, providing critical data and technology for defense applications.
An Australian company specializing in the development of scramjet-powered, reusable hypersonic vehicles, with applications extending to defense and rapid response capabilities.
France's national research centre for aeronautics, space, and defense, which conducts extensive research into advanced propulsion systems, including ramjets and scramjets for hypersonic flight.