Has Anyone Designed a Four-Spool Engine?

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SUMMARY

The discussion centers around the design of four-spool engines, with participants noting the absence of such designs in existing aerospace engineering. The consensus is that adding an extra spool would increase engine weight and complexity, leading to significant maintenance challenges. Instead, the conversation highlights the advantages of three-spool engines, particularly their efficiency in minimizing engine surges, making them preferable for flight applications.

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  • Research the design principles of three-spool jet engines
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Aerospace engineers, aviation maintenance professionals, and students studying jet propulsion systems will benefit from this discussion.

avinod4all
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Actually, we have three spool, two spool engine and single spool engines, how about the four spool engine? did anyone came across the design of four spool engine? I think adding an extra spool leads to increase in engine weight and becomes more complex in its mechanism.
 
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'No' I have never come across a 4 spool engine, and yes it would be more complicated and causes lots of maintenance problems for a four spool engine, I would better suggest to discuss about a three spool or two spool engine in this thread.
Major advantage of triple spool design is it's ability to minimize engine surges thus they are the most efficient engine flying.
 
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