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> > > In your Opinion > Why is there a spiral on the spinner cone of an aircraft engine ?

Video - Why is there a spiral on the spinner cone of an aircraft engine ?

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Maybe you've already noticed on aircraft engines, specifically on the cone in the centre of the fan, a painted white spiral but it is not there just to look pretty. So what is the purpose of this spiral ? Some people think that is to scare birds.

But watch the video to find out. The answer is at the end of the video. 

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