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What is the purpose of the turbine in a jet engine?
A gas turbine is a rotary engine that extracts energy from a flow of combustion gases. Ambient air is drawn into the engine intake where an axial or a centrifugal compressor (or both) increases both the pressure and temperature of the air before feeding it into the combustion chamber.
What is the purpose of a turbine engine inlet and compressor?
All turbine engines have an inlet to bring free stream air into the engine. The inlet sits upstream of the compressor and, while the inlet does no work on the flow, inlet performance has a strong influence on engine net thrust.
Can you switch off a stage of a jet engine?
You cannot “switch off” a stage of a turbine engine. As seen elsewhere jet engines are a single block mechanically locked together: all the stages (compressor AND turbine) connected to the same shaft. If the shaft turns, all connected stages turn with it.
How are the stages of a jet engine connected?
As seen elsewhere jet engines are a single block mechanically locked together: all the stages (compressor AND turbine) connected to the same shaft. If the shaft turns, all connected stages turn with it. You can have designs with multiple shafts, but this increases the complexity (design and maintenance) heavily.
How does a compressor work in a jet turbine?
The compressor is made with many blades attached to a shaft. The blades spin at high speed and compress or squeeze the air. The compressed air is then sprayed with fuel and an electric spark lights the mixture. The burning gases expand and blast out through the nozzle, at the back of the engine.
Why does the compressor need more stages than the turbine?
Such, the problem is why the compressor need much more stages to achieve some compression ratio than the number of stages of the turbine,simply to say, with somewhat less (numerically) expanding ratio. If exactly, the expanding process is continued in the exhaust nozzle. But this isn’t the main cause of the less number of stages of a turbine.