How does a jet-engine compressor compress air?

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A jet-engine compressor compresses air through multiple stages of rotating vanes, incrementally increasing the air's pressure as it flows through progressively smaller areas. The compressor's design includes alternating rows of rotating blades and stationary vanes, which create low and high-pressure zones, directing airflow towards the combustion chamber. After compression, the air is heated and expands, driving the turbine, which is connected to the compressor via a shaft, thus enabling the entire system to function efficiently. The thrust generated by the engine results from the acceleration of air exiting the turbine, adhering to Newton's third law of motion. Overall, the compressor's role is crucial for increasing air pressure and facilitating the combustion process necessary for jet propulsion.
  • #31
That's squarely in Fred's arena, but I don't think so. There are a lot of variables that contribute to creating thrust, such as type of fuel, combustion temperature, nozzle design, exhaust temperature...
 
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  • #32
Theoretically, the most basic equation for thrust is

F_t= \dot{m}(V_{OUT}-V_{IN})

where
\dot{m} = air mass flow rate
V_{OUT} = air exit velocity
V_{IN} = air inlet velocity
 
  • #33
1.ooohhhh i thought thrust= exhaust velocity * rate of combustion
is this wrong?

2.which part of the aircraft experiences this reaction force(thrust) first? (is this question stupid?)
3.is there a difference between thrust and propulsion?
4.and for compression?
there's no theoretical equation for compression?
 
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