Jet Engine Compressed air Pressure for various altitude and velocity

In summary, the compressed air pressure entering the combustion chamber in a jet engine changes based on altitude and velocity. This is due to the air passing through a final stage diffuser and the effects of altitude and airspeed on total air pressure. Proper flight conditions must be taken into consideration for accurate design.
  • #1
vincentryan
29
0
HI
In Jet Engine, i want to know that the compressed air prssure changes before it enters into the combustion chamber from the compressor in various altitude and velocity or it is consatnt for altitude and velocity?
 
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  • #2
The air will pass through a final stage diffuser prior to going into the combustor. It will definitely be different at various operating conditions.
 
Last edited:
  • #3
Static air pressure changes in altitude, so altitude affects the pressure ratio. Vehicle speed affects the effective total air pressure, so airspeed affects the pressure ratio.

Conditions are VERY different between operating conditions and proper flight envelopes or mission defintions need to made before any design can be done.
 

1. What is the purpose of compressed air pressure in a jet engine?

The compressed air pressure in a jet engine is essential for providing the necessary thrust for the aircraft to take off and maintain flight. This pressure is created by compressing air from the atmosphere and then expanding it through the engine, which creates a powerful force that propels the aircraft forward.

2. How does compressed air pressure change with altitude?

The compressed air pressure in a jet engine decreases as altitude increases. This is because the air density decreases at higher altitudes, meaning there is less air available to be compressed. As a result, the engine must work harder to maintain the same level of pressure and thrust.

3. Does the velocity of the aircraft affect the compressed air pressure?

Yes, the velocity of the aircraft does affect the compressed air pressure in a jet engine. As the speed of the aircraft increases, the pressure in the engine also increases. This is because the air is being compressed and expanded at a faster rate, creating a greater force.

4. How is the compressed air pressure controlled in a jet engine?

The compressed air pressure in a jet engine is controlled by the compressor, which is a series of blades that compress and then release the air. The angle and speed of these blades can be adjusted to regulate the amount of air being compressed and the resulting pressure.

5. What happens if the compressed air pressure in a jet engine is too low or too high?

If the compressed air pressure in a jet engine is too low, the aircraft may not have enough thrust to take off or maintain flight. If it is too high, it can put excessive strain on the engine and potentially cause damage. It is important for the pressure to be carefully monitored and controlled for safe and efficient flight.

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