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As you can see the title of the question, intake of turbofan engine has an angle of attack. why? see:

enter image description here


marked as duplicate by Federico, Sanchises, Ron Beyer, ymb1, fooot May 18 '17 at 14:47

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  • $\begingroup$ Small detail: What you show in blue is not an angle of attack. $\endgroup$ – mins May 18 '17 at 14:58