Questions tagged [bypass-ratio]

This is the ratio of air (by mass) that bypasses the combustion chamber of a jet engine, and instead is pushed through the outer shell of the engine by the main fan in the same way that a propeller pushes air.

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What is this number in the bypass ratio?

Here is an example of a bypass ratio 9:6:1. 9kg goes around the core and 6kg goes into the core, but what is the 1 for.
Ethan
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