Ramjet Engines in Fighter Aircraft
Ramjet Engines is a type of Combustion Engine, comes under the category of Air breathing engine. It is the simplest of all the air breathing engines. It consists of a Diffuser, Combustion chamber and a Nozzle, and ramjets do not need any moving parts such as compressors and consequently no turbine as well.
Major Assemble of Ramjet Engines
- Diffuser
- Combustion Chamber
- Nozzle
- Ramjet Engines mechanism are less complicated jet engine for producing thrust in flying vehicle.
- Ramjet Engines are most efficient when operated at supersonic speeds.
- All the compression is occurs in the intake diffuser section producing rise in the static pressure.
- When the air decelerated from a high mach number to a low subsonic mach number, it results in substantial increase in pressure and temperature so the ramjet does not need Compressor and Turbine.
Working
- Ramjet produces power by increasing the momentum of the moving fluid by induction of energy by combustion of fuel, so the momentum of the exhaust jet greater and exceed that of the incoming air on continuous cycle.
- Where the Fuel is burned the high pressure air and the mixture is then expanded to ambient static pressure through a Nozzle System.
- High pressure gas expanded through the Nozzle by converting the low subsonic flow in the combustion chamber into a supersonic jet.
- The combine mixture of air and fuel (supersonic jet) exhausted through the C-D Nozzle.
Working cycle of Ramjet Engines
