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The high-pressure turbine is, with the combustion chamber, very hot (more than the exhaust nozzle). You may read this Wikipedia article which has a short list of materials used for turbine blades (with alloys names and cooling techniques).

^{Drawing from summary above, published in SP’s Airbuz Oct 2020. Double fan engine?!}.

The high-pressure turbine is, with the combustion chamber, very hot (more than the exhaust nozzle). You may read this Wikipedia article which has a short list of materials used for turbine blades (with alloys names and cooling techniques).

Engine structure (turbofan)

^{(source: Wikipedia)}

An actual engine looks like that (CFM56 turbofan). It's easy to map the detailed elements to the simplified schematic. The fan pushes about one ton of cold air in the engine every second in high power turbofans. This is why temperatures and pressures can be so large after compression and after combustion.

 ^{High-pressure turbine blade (source: Wikipedia)}

 ^{Exhaust from Boeing 787 engine (GEnx, one of the world's largest jet engine - Source)}

^{Drawing from summary above, published in SP’s Airbuz Oct 2020. Double fan engine?!}.

The fan pushes about one ton of cold air in the engine every second in high power turbofans. This is why temperatures and pressures can be so large after compression and after combustion.

^{High-pressure turbine blade (source: Wikipedia)}

^{Exhaust from Boeing 787 engine (GEnx, one of the world's largest jet engine - Source)}

(To understand temperatures and pressures, remember the fan pushes about one ton of air per second in high power turbofans.)

All quotes are from Nasa Guide To Engines, 2007, except stated otherwise.

Compressor section

Combustion chamber

See single crystal material (known as monocrystalline material in electronics) .

An actual engine looks like that (CFM56 turbofan). It's easy to map the detailed elements to the simplified schematic. The fan pushes about one ton of cold air in the engine every second in high power turbofans. This is why temperatures and pressures can be so large after compression and after combustion.

All quotes are from Nasa Guide To Engines, 2007.

Fan example (with a fan blade missing after the engine blew apart).

Compressor section

Compressor example (high pressure rotors)

Combustion chamber

Combustion chamber example

See single crystal material (known as monocrystalline material in electronics) .

Turbine example (high pressure stator)