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A type of jet engine which uses two different airflow streams (one passing through the core and another blown past it by a fan) for obtaining thrust.

6 votes
1 answer
1k views

How do jet engine turbines blades rotate in different directions?

I have seen many jet engines' turbine blades rotate in different directions while they look on same shaft. I wish to understand how they can rotate in different direction. The picture below explains m …
eeesa's user avatar
  • 151
2 votes
1 answer
122 views

How are individual spool optimal speeds determined in 3-spool engines like Trent 700/800?

I can see that in a 3-spool engine, the low pressure turbine and the fan have the lowest speed; The intermediate pressure turbine and the intermediate pressure compressor have another speed, and the l …
eeesa's user avatar
  • 151