How are the combustion chambers cooled?
- By l.p compressor air
- By h.p compressor air
- By fan pressure air
Explanation
Combustion chambers are cooled and their flame contained by a film of relatively cool, high-pressure air drawn from the HP compressor delivery and admitted through liner holes. LP compressor or fan air is at too low a pressure to penetrate and protect the liner against the combustion gases, so HP compressor air is used.
rajib asking:
how??
Community Comments (4)
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dimky Posts: 514 03.02.2013 / 16:56
Why not? Do you have your own opinion? :) I'll try to correct it.
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rajib Posts: 8 05.02.2013 / 14:01
so what is fan pressure air for ??
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dimky Posts: 514 05.02.2013 / 14:49
Air from fan don't reach combustion chamber.
Combustion chamber is cooled by secondary and tertiary airflow coming from HP compressor.
http://www.answers.com/topic/tertiary-airflow
Combustion chamber is cooled by secondary and tertiary airflow coming from HP compressor.
http://www.answers.com/topic/tertiary-airflow
A
ademceven Posts: 8 19.02.2020 / 12:34
fan air pressure is too low to send there but the hp comressor air is relevantly cooler than the combustion chamber also has enough pressure to work there, since the target is not making combustion chamber to zero degree hp air far better suited for the job
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