The pressure ratio in jet engines is the ratio of pressure between the entrance of the compressor and the exit of the compressor.
Pressure of WHAT .
The ratio is about 15:1 fuel to air.
ratio of maximum to minimum pressure only case of constant volume heat addition in engine cycle
Pressure pulsations
because a diesel engine ignites its fuel with pressure, and not with a spark like a petrol engine. that is why a petrol engine does not need as high a compression ratio as a diesel engine
Jet steam is the pressure steam that is released by the nozzle of the jet engine. Using fuel and air to burn produces this steam that is hot and under pressure for the use of the turbine and provide the thrust needed.The above equations shows this. Normally the jet steam to be discharged is under high temperature and high pressure and it is used to give adequate thrust to the aircraft or to other vehicles having jet engines. Besides imparting thrust, the jet steam plays an essential role of cooling and thermal control of the jet engine.
jet engine
Jet Ratio: it is defined as the ratio of the pitch diameter (D) of the pelton turbine to the diameter of the jet (d). It is denoted by m and is given asm = D/d (=12 for most cases)
Frank Whittle was the invetor of the jet engine.
You can but a mini jet engine on ebay.
In a jet engine, air is sucked into the front of the compressor where fuel is injected and mixed with the high-pressure air. This mixture is then ignited in the combustion chamber and the resulting high-temperature, high-pressure gases are pushed out of the exhaust nozzle to create thrust for propulsion.
Jet fuel is injected into high pressure air in jet engines.