How does a jet-engine compressor compress air?

  • Thread starter Thread starter perfectz
  • Start date Start date
  • Tags Tags
    Air Compressor
Click For Summary
SUMMARY

The discussion focuses on the mechanics of jet-engine compressors, specifically how they compress air through multiple stages of rotating vanes and stationary blades. Each stage incrementally compresses the air, which is then directed to a diffuser that increases static pressure. The interaction between the compressor and turbine sections is crucial, as the turbine provides the necessary work to spin the compressor via a shaft. Key principles such as Bernoulli's principle and the relationship between pressure and airflow are emphasized, along with the importance of understanding the differences between axial and centrifugal compressors.

PREREQUISITES
  • Understanding of Bernoulli's principle
  • Familiarity with jet engine components (compressor, turbine, combustion chamber)
  • Knowledge of airflow dynamics and pressure differentials
  • Basic concepts of thermodynamics related to gas compression
NEXT STEPS
  • Research the design and function of axial and centrifugal compressors
  • Explore the principles of gas dynamics in jet propulsion systems
  • Study the role of the combustion chamber in jet engines
  • Investigate the efficiency metrics of different compressor types
USEFUL FOR

Aerospace engineers, mechanical engineers, students of propulsion systems, and anyone interested in the mechanics of jet engines and air compression technologies.

  • #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...
 
Engineering news on Phys.org
  • #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?
 
Last edited:

Similar threads

  • · Replies 33 ·
2
Replies
33
Views
4K
  • · Replies 9 ·
Replies
9
Views
841
  • · Replies 9 ·
Replies
9
Views
426
Replies
1
Views
773
  • · Replies 3 ·
Replies
3
Views
3K
Replies
4
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 20 ·
Replies
20
Views
5K
  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K