Re:See Thru Jet Engine [video]
by GuB-42 on Tuesday July 19, 2022 @10:38AM
(#32152178)
Generally, it is because it is harder for the air to exit from the intake than it is to exit through the exhaust.
It can be because the inlet into the combustion chamber is larger than the outlet, because the blade pitch is finer on the compressor side than it is on the turbine side, because of the specific geometry of various components, ... Often all of that.
The intake is optimized for low speed high pressure (lots of elements, small space, fine pitch, ...) , the exhaust is optimized for high speed low pressure (less elements, more space, coarser pitch), and naturally, the air will flow from the high pressure zone to the low pressure zone.
It can be because the inlet into the combustion chamber is larger than the outlet, because the blade pitch is finer on the compressor side than it is on the turbine side, because of the specific geometry of various components, ... Often all of that.
The intake is optimized for low speed high pressure (lots of elements, small space, fine pitch, ...) , the exhaust is optimized for high speed low pressure (less elements, more space, coarser pitch), and naturally, the air will flow from the high pressure zone to the low pressure zone.