Linked Questions

3 votes
2 answers
3k views

What materials are used to make up a combustion chamber? [duplicate]

What type of materials are used to make up the different sections such as the linings of the combustion chambers in a gas turbine engine. Do these type of materials vary for the different types of gas ...
Atheeq Nisthar's user avatar
3 votes
1 answer
2k views

What material are High Pressure Compressors made of? [duplicate]

What material are GE engine High Pressure Compressor (spools) made of ? i.e. aluminum, titanium ?
john king's user avatar
10 votes
5 answers
7k views

Why do jet engines have a maximum speed?

What's the scientific background behind a jet engine's top speed? Jet engines increase efficiency at higher airflow rates, so why does the efficiency stop increasing at some point?
thebiggay's user avatar
  • 109
17 votes
2 answers
19k views

Why are turbine blades not made out of titanium, only compressor blades?

According to this video on jet engine blades, titanium is never used for the turbine, because it "melts and burns at the temperature of the flame". Only the blades of the compressor are made of this ...
finite graygreen's user avatar
-4 votes
5 answers
3k views

Is water a possible fuel for jet engines?

Jet engines can run on almost any fuel, and the operating temperatures of modern jet engines' hottest sections are anywhere between 3000 and 3150 degrees F (1648 and 1732 degrees Celsius). Does that ...
securitydude5's user avatar
23 votes
1 answer
7k views

Can you identify this jet turbine stage?

I was just wondering if anyone could give me any info about this turbine rotating stage I picked up at a yard sale today. The stage measures 8-1/2" to the outside of the blades. The only markings I ...
Jason Freier's user avatar
5 votes
1 answer
4k views

What is the temperature of the air leaving the combustion chamber of a CFM56-5C?

What is the temperature of the air leaving the combustion chamber of a CFM56-5C? I was wondering as I could only find out that the fuel burns at around 1500 Celsius but this can't be the same as the ...
SRawes's user avatar
  • 1,211
8 votes
1 answer
2k views

Why does the CF6 have a lower bypass ratio than the TF39?

The General Electric TF39, which powered the original C-5 Galaxy, was the very first high-bypass turbofan brought into mass production, with a previously unheard-of 8:1 bypass ratio. Yet, when it ...
Vikki's user avatar
  • 28.3k
1 vote
2 answers
814 views

Could a jet engine be made from cast aluminium?

What materials are used to make the high temperature-high pressure bearing parts in a jet engine? I'm asking about the combustion chamber, combustors, nozzle and diffuzers (as in ramjets) rather than ...
Francis L.'s user avatar
  • 2,514
3 votes
2 answers
2k views

Why aren't ceramics used in turbines?

I have seen that ceramics take a lot of heat to melt (3240º F). So, I'm wondering, why aren't ceramics used as the compressor levels in turbines? Is there something to do with the strain? or is ...
Nicholas's user avatar
  • 668
2 votes
2 answers
3k views

What is the material composition of aircraft compressor blades?

I read up that aircraft compressor blades are generally made out of titanium. I was curious as to why is titanium the choice of material used for aircraft compressor blades? What alloys are involved ...
Serj Stanislaus's user avatar
3 votes
1 answer
1k views

What is the material that is used for turbine blades that has the highest melting point?

What is the material that is used for turbine blades that has the highest melting point ?
Ohenba Narkwa's user avatar
3 votes
2 answers
1k views

What materials are suitable for making a mini gas turbine engine?

What materials are suitable for a mini/model gas turbine engine, specifically the fan, compressor, combustion chamber and turbine?
Pahan Tharuka's user avatar
3 votes
1 answer
2k views

What material is used to make engine covers for passenger airliners?

What material is used to make the engine shrouds for passenger airliners?
user avatar
-1 votes
2 answers
247 views

Why doesn't a hot jet engine crack at 10,000 metres and -50 C air temperature?

I have seen videos of red hot jet engines being tested at sea level in a building. But even in a building the temperature difference between the engine and the room is large. Most materials would ...
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