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A comment on How Qantas Ferried an Engine on the Wing of a 747. Parent comment

Re:How Qantas Ferried an Engine on the Wing of a 747 by emeraldd on Saturday January 09, 2016 @12:13PM (#10871971)
Probably less drag to let the air flow through an "empty" engine rather than to have a large obstruction on the wing.
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Re:How Qantas Ferried an Engine on the Wing of a 747 by sandworm101 on Saturday January 09, 2016 @02:28PM (#10872475)
I don;t know. Cramming all that air down the tube of a fanless engine doesn't seem very efficient compared to the clean cone of a fairing.
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Re:How Qantas Ferried an Engine on the Wing of a 747 by sbierwagen on Saturday January 09, 2016 @02:55PM (#10872600)
Adding a bigger fairing will increase the cross section of the object, increasing the form drag. (Bigger things push more air out of their way when moving)

https://en.wikipedia.org/wiki/Parasitic_drag#Form_drag

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